20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (2023)

LED lights are a great energy-efficient solution, but if they’re off-the-shelf products that you buy, it’s common the LED light will fail. All LEDs can have manufacturing bugs and problems that can affect their performance that you can fix. It’s usually because there are electricity issues or internal components that need upgrading. If your LED fixture isn’t working right, here’s how to remedy the common problems with LED lighting so it doesn’t happen anymore.

Top 20 Common problems with LED lighting

1. LED light flickering

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (1)You get a brand-new LED light and it starts to flicker at some point. It’s not constant and can be intermittent. It can flicker randomly just like Morse code or be a constant flicker leading you to wonder what’s happening. Is it a sign that the LED is already starting to die or is it something else?

Why is LED flickering happen?

There are several reasons why an LED is flickering. It can be because the light is connected to another appliance that takes up too much wattage. Appliances such as washers, dryers, air conditioners connected to the same circuit can cause flickering. It can also be a light bulb that’s not screwed in properly. It can also be a bad capacitor or even a bad driver.

Why do we need to fix this common issue?

If these common issues aren’t fixed, it can lead to the LED parts to stop working completely. Any part of your LED light that isn’t getting enough electricity needs to be rerouted. Even the fluctuations that happen between electrical appliances that continue will cause your LED to malfunction forever. It may also be necessary to change the capacitor or LED driver parts.

How to fix flickering LED light?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (2)Some bulbs that are screwed in can flicker because your electrical socket has corrosion inside it. It needs to be cleaned out. Turn-off power to that location and clean the socket with a wire brush or a dry scrubbing sponge. Make sure the socket is dry and screw back the bulb, so it’s snug. With too many appliances on the same circuit then switch the electrical lines to another source if possible.

Bad capacitors and drivers will need replacing likewise if you can do it yourself. Otherwise, have an electrician friend do it for you.

2. LED buzzing or humming noise

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (3)When you install LED lights regardless if they dim or not, have an audible humming or buzzing to them. If you aren’t near the light and it doesn’t bother you more than 2 or 3 feet away, then this common problem shouldn’t be an issue. Any light that you are close to that has a buzzing sound can be fixed if you start to look at a couple of key issues.

Why is this LED problem common?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (4)The first common issue is a low-quality LED light that’s made poorly. It’s not so common with better-made LEDs but can also happen. It can be due to the type of light switch or dimmer switch. If these switches aren’t compatible, there will be humming or buzzing sounds. It’s mainly a problem with dimming bulbs that aren’t compatible with your dimmer switch. These common problems can be fixed by changing the bulbs by brand name or by light switch brands.

Why do we need to fix it?

Perhaps your lights aren’t on the right circuit dimmer for the amount of wattage that it’s supposed to dim. LED lights all have different levels of natural buzz or hum depending on the manufacturer. If this buzzing is annoying, then you can change the bulb with another brand. If the buzzing still persists, then you have to move to the next step of replacing the light switch or dimmer switch.

How to fix LED buzzing noise?

Not every dimmer will be compatible with your LED light. You might try several before finding the right one. The best solution is buying an ELV dimmer (electronic low voltage dimmer) instead. This reverses the electrical method of how the dimmer naturally works. You do need to calculate the amount of wattage that is running on the lights being dimmed. For simple light stitches, make sure that the switch itself is used for non-dimming bulbs.

If you’re using dimming bulbs, the buzzing problems can stop if you switch them to non-dimming for rooms that only have regular light switches. You can also troubleshoot each bulb my listening for their buzz individually.

3. LED light too bright

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (5)

What’s the issue?

So you bought some new LEDs and they’re too bright for your liking. You see that they light up the room too much and wash-out everything. It’s uncomfortable to be around them for any length of time because of the intense glare. What do you do?

Why does this happen?

Perhaps you bought a wattage bulb that is simply too high for your lamp. It can also be because you bought a Kelvin temperature bulb that is rated at a color spectrum that is too white for your liking. Most people don’t check the Kelvin rating that comes with LED bulbs and pick a Kelvin that’s too bright or too white than they expected. This can be remedied with some quick fixes but often it just needs to be exchanged.

Why do we need to fix it?

The problem doesn’t go away and can continue to be a burden for those who are light sensitive. Bright lights in some rooms have a psychological effect that can affect mood. Like the bright lights in a doctor’s office, it can be unhinging if you don’t change to light for a comfort level you like. If can also be an electrical issue if you picked a higher wattage bulb that’s meant for your lamp to use.

How to make LED light dimmer?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (6)You can switch the light to a softer Kelvin that isn’t so bright. The lower the Kelvin, the warmer the light will become. Don’t pick anything above 4000K and pick 2000-2500K instead. You can install a dimming switch if your bulb is dimmable. If it isn’t, you can place a glass filter or plastic filter around the light source. This is only if your light is inside a lamp fixture where heat isn’t an issue.

Fixtures that have a flat cover can have a sheet of frosted plastic placed inside. Some laminated window tinting that can be laid over the cover alternatively. The best solution is to replace the lamp with a softer temperature bulb.

4. LED light too dim

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (7)

What’s the issue?

There’s nothing worse than having an LED for a while and the light is starting to become dimmer. It still works fine and lights-up when you turn it on, but it just doesn’t have the same brightness it had before. Why do you do when you start getting brightness degradation?

Why does this happen?

All LEDs have a lifespan even though they last for several years, if not decades over incandescent lights. But sadly they start to have a loss of brightness that can appear as a slow change in color. It can start looking warmer in hue with less light saturation. Ultimately, if the light doesn’t stop working completely, it can just lose brightness until it dies. Poor LED designs also contribute to a light losing brightness.

(Video) Recessed lighting electrical problem troubleshoot

Cheap materials in the diode will die quickly if they’re made in oversea factories.

Why do we need to fix it?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (8)Believe me when I say that a light that’s losing brightness is a fire hazard. It can be from a capacitor that has gone bad. Learn what the capacitor looks like and see if yours is bulging. If it is, this can be a dangerous electrical fire if it bursts. It will need to be changed immediately. It can also be from the LED driver that has a common problem. LEDs aren’t as foolproof if they’re made with cheap components. If their heat sink is a bad design, an electrical fire is the last thing you need.

How to make LED lights brighter?

In case the bulb is old then you simply change it for a new one. If there’s a fixture involved, you need to check the internal equipment to solve this problem. This should happen when a sudden dim happens over a short period. The most common reasons are the capacitor and LED driver going bad. If you have a quality LED fixture that is slowly losing brightness, it’s probably the diode that’s dying. Then it’s time to replace it for a new diode if that can be replaced as an individual item.

5. LED light stopped working

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (9)

What’s the issue?

If a LED light stops working, it’s not so easy to detect what the problem can be unless you’re an electrician. It can happen after a day, a week, or a year. Then there’s the chance it can happen after 5 years, it’s all a different reason. So what do you do when this happens?

Why does this happen?

Unlike standard incandescent bulbs, LED lights are made up of several components that can all be the cause for LED lights ceasing to work. It can be from heat build-up that damages the electronics. It can be due to cheaply made parts in the driver or a bad capacitor. The last item is the LED itself which seldom fails unless it comes from cheap materials building the diode itself.

Why do we need to fix it?

Once again it’s a fire hazard if you don’t fix a LED fixture that suddenly stops working. The electricity to that light needs to be disconnected as soon as possible. If it’s a bulb, then unscrew it from the lamp. The current that goes to a LED fixture holds reserve power in the LED driver. If something is wrong there, the chance of further heat build-up from faulty driver parts a fire issue.

How to troubleshoot LED stopped working?

The easiest thing to do is to check your circuit breaker if a LED light turns off suddenly. If that’s not the problem, then check the internal parts of a fixture. Bad capacitors or a bad driver will be the next step to see what’s wrong. This means you need to take apart the unit (with the electricity turned off) and have some help looking at the unit parts. If it comes down to replacing parts, then have an electrician help do the wiring or fixing.

LED bulbs can be thrown out and replaced easily enough since they’re not easy to repair.

6. LED light flashes on and then goes off

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (10)If you have the LED unit or bulb, if it turns on and then suddenly goes off, there’s a problem. This ordinary problem can have two parts to the problem itself, especially if the light can be repeatedly turned on and it does the same thing. If it does this only once it will point to an immediate issue. Here’s what you’ll need to do.

Why does this happen?

A fixture can have a driver that’s going bad and this is the reason why it won’t light up. Nine times out of 10, it’s the driver going or gone bad. Other times it can be from the incapability of using 220V on a driver that’s meant for running 110V. It will operate for a short time and then turn off due to heat build-up.

Related article: Why do my dusk to dawn light keeps going on and off?

Why do we need to fix it?

If it comes down to the incorrect voltage that isn’t meant for your LED fixture, then it needs to be changed. Heat issues that can go with overheating are also a fire hazard. Homes that use 220V are more common throughout Europe. In American homes, the electricity is always 110V and will be fine for a LED fixture that is rated for 110 Voltage. Unless there’s an internal problem with the driver, it will be an electrical danger.

How to troubleshoot LED light flashing problem?

You’ll need to have a professional take a look at the LED driver to find out what parts have gone bad. These parts can usually be fixed in an afternoon since they are replaceable. In the case that a different voltage is used in your home, not compatible with your LED driver, then change it. You’ll need to use a voltage converter to step down the correct voltage. It’s also not a smart idea to use the incorrect fixture rated with a different voltage in the wrong country.

7. LED dimming does not work

What’s the issue?

A bulb that doesn’t do anything when you try dimming-it is a bad sign immediately! Not in terms of safety, but that something is wrong with either your LED light or dimmer stitch.

Why does this happen?

You might have a LED fixture or bulb that wasn’t meant to dim. There might be a mistake that your bulb was switched by accident, and is just a non-dimming bulb. Your light fixture isn’t allowing dimmable bulbs to work because the dimmer was meant for incandescent bulbs only. There isn’t a dimmer built into a LED driver’s light fixture.

Why do we need to fix it?

If you want to have dimming lights you need to have a dimmer controller. This needs to be for LED lights that allow dimming functions. Older lights that worked off a dimmer won’t work properly or at all if they are burnt-out. They will need replacing. Lamps that have a dimmer control don’t work with LED lights so these need an additional dimmer control plug.

How to troubleshoot LED lighting dimming issue?

For light switches that have dimming control, these will need to work with LED lights too. If they don’t you need to find an appropriate dimmer control for that amount of wattage used for these lights. Some people prefer to use the ELV dimmer (electronic low voltage dimmer) that works better for LED lights. You may have to find a separate driver that plugs into a lamp with a dimmer switch.

These are called PWM dimmers (pulse width modulation) and are only used when dimming controls are used for non-dimming LEDs. It’s also worth mentioning that they don’t often use PWM dimmers anymore.

8. LED strip showing the wrong color

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (11)Light strips LED are very cool looking when you use them for accent lighting in display shelves or under ceiling moldings. At some point, you might find that the color that you want doesn’t show the color you intended. Or when you turn on the strip the color has changed to something else. So what to do?


Why does this happen?

Light strips that use the RGB color changing system change color through varying these three colors. If you have a different color that’s showing it’s likely that there might be a faulty connection between the connection wires. It can also be a general problem with the light’s controller.

Why do we need to fix it?

If you don’t check for faulty or loose wires, the lights will not change color correctly. Handheld controllers for the same reason can malfunction from time to time and can be fixed in a couple of ways. You will then need to check both of these problems individually.

How to fix wrong color LED strip light?

Fixing loose wires is a matter of unscrewing the back of the driver that works the RGB light strip. These wires may have been jarred causing the connection to become loose. Check each wire that goes into a color connector. The colors can return to normal if that was the problem. The next step is to reset the colors on the controller. There can be a reset button that uses a small tool to poke the button or there is a manual reset button you may press.

Related article: Common problems with LED strip lighting

9. LED recessed light turns off after a few seconds

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (12)

What’s the issue?

Have you ever experienced the problem of recessed light turning on then turning off immediately? Recessed lighting is common in many homes but was around a lot longer than LED lights became extremely popular. Installing LEDs into recessed lighting nooks will often have the common problem of lighting up and then after a while turn off after a while. Then suddenly they can turn back on for a while and then do the same thing over again.

Why does this happen?

The simplest answer is heat build-up that makes the LED shut down due to the amount of heat build-up. Recessed lights aren’t well thought out in many cases. These lights have a built-in heat sink that is supposed to cool-off the base of the lamp itself. In a cramped space, the heat build-up is unavoidable, so the lights will turn off when they get too hot.

Why do we need to fix it?

Heat build-up is very hazardous for fire dangers. When wood or other composite material is used, it can burn. If LED lights get too hot they can start a fire that can spread quickly. Being that this heat is inside a compact space, the fire isn’t detected until it’s too late giving very little warning. It needs to be fixed for proper ventilation accordingly.

How to troubleshoot LED recessed lights shutting off after a few seconds?

Putting in recessed lighting with LED lights is almost an art for the electrician to solve. The addition of a ventilation fan needs to run through the recessed space. This will involve installing hidden air vents that help cool the air inside these recessed areas. After that, the amount of heat build-up is lessened and the LED lights can work without overheating so easily.

10. LED recessed light turns off randomly

What’s the issue?

You may have recessed lights installed in your home since the 1970s and never had a problem. Now you switch to energy-saving lamps and then the problems start to occur. Individual lights start to turn off by themselves after a while and turn back on randomly. You might end up trying different LED lamps that all burn-out too quick as well.

Why does this happen?

The problem with recessed lights was never a problem for incandescent lights until the LED lights went in, Is it because the fixture for the light is the wrong kind? The answer is actually from the heat of the LED lamp inside the fixture. LED lights need airflow to keep cool. While bulb designs have cooling heat sinks built-in, a recessed fixture isn’t made to move lots of air. The bulb gets hot and then it automatically shuts off.

Why do we need to fix it?

You can look for LED recessed lighting fixtures or modify the fixtures that you have already. The reason for fixing these fixtures is to get more air over the lights so they don’t get hot. This can be tricky if the recessed area is shallow to work within. Unless you want the threat of a fire hazard, it will need some troubleshoot modifications.

How to solve recessed lights randomly turned off?

You can replace the older fixtures with the newer ones that have better heat sinks built-in. You can also modify your older fixtures that use screw-in bulbs by drilling more air holes. The addition of a ventilation system inside the recessed area can move air and cool off your LEDs better. In especially tight areas, this is a must even when new fixtures are put in.

11. LED light attracts bugs

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (13)You’ve spent all summer fixing-up your backyard to have friends over, and then find out more bugs are visiting instead? How can there be so many little flies and bug attracted to your LED lighting? It seems the issue isn’t because of your LED lights at all.

Why does this happen?

Small insects and flies have a very select set of eyes that see different wavelengths of colors. It’s obvious that UV light attracts them, but what else is doing it? The Kelvin of your lighting can be enough to be attractive for insects if it falls under their radar. Anything above 5500K is a bad idea and anything below 2000K as well.

Why do we need to fix it?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (14)Insects seem to be attracted to lighting that is within their senses. The harsh blues to ultraviolet is very attractive for them. The same can be said for red shades of light. Either of these spectrums on the Kelvin scale is a dead giveaway in their ability to see LED light. If they can’t see a select spectrum of light, they seek-out other light that they like instead.

How to avoid LED lights from attracting bugs?

The best shade of light that seems to work best is a medium yellow-red hue that is similar to incandescent light. For some reason, they cannot see this light spectrum as easily. This is usually 2200-2700K which is a very comfortable living room light. Intimate light in the 2200K range is much better at keeping away pesky insects.

12. LED light overheating

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (15)As well as LED lights are supposed to stay cool, there are heat issues that can come up. If the intended use for LEDs puts them into areas where the air is limited, they can get hot very quick. Poor ventilation causes them to burn out or turn off unexpectedly. With the common issue of recessed lighting making LED lights overheated, it’s being debated for all the wrong reasons.

Why does this happen?

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The old style of recessed lighting used standard light fixtures meant for incandescent bulbs. There was enough room for heat to escape a radiating bulb inside a recessed light fixture. Don’t forget that these bulbs get very hot too. Which, this is why these lights always got replaced more often. Now LED lights are getting a bad wrap for blinking and turning on and off at odd times.

Why do we need to fix it?

Not every recessed light fixture is the same, so heat issued are all different. The major issue with LED lights is their heat sinks which allow bulbs to cool down. If they get too hot in a small and poorly ventilated area, it can become a hazard. If not for fire dangers, it’s causing the LED bulbs to burn-out faster. It needs fixing for safety in general if it’s in your home.

How to fix LED light overheating?

It might be better to upgrade to IC-rated recessed LED lighting. These specialized units are made with higher amounts of heat sinks built into their fixture. This way the heat generated by them is radiated upward in a safe manner. These lights will still generate heat but will have fewer chances of becoming overheated as a result.

13. LED light burning out

What’s the issue?

There’s nothing like the sadness of buying a LED light from the store and it burns-out the same day. Just having a new light in the first few days burning out is a terrible feeling after spending so much on it. Not that the New LED bulbs cost so much, they’re more affordable now than in the last 10 years.

Why does this happen?

If you have a LED bulb that burned out in the first couple days it’s obvious you’re buying from the dollar discount store again. Flea markets and swap meets are also a terrible place to buy cheap LED bulbs. The reason is that cheap imports are flooding the market since LED technology is so popular now. It’s probably best to stick to name brands instead.

Why do we need to fix it?

If there was a way to fix LED bulbs, life would be easier. In some rare instances, LED fixtures that have replaceable LED diodes can be fixed. Or more or less, the little devices such as a capacitor or the power supply electronics. Those little bulbs have them too, and poor imported designs are the reason they typically die so quickly.

How to troubleshoot it?

The name brands last as long as they advertise, which is why they have a name for themselves. Philips and Cree are both top names that also come with a price, but that’s the quality that you pay for. And this is why they can last for the rated hours they advertise on their packaging.

14. Wrong LED beam angle

What’s the issue?

What if you’ve bought a bunch of LED floodlight bulbs for your warehouse complex and discovered that they’re all narrow beam angles instead of floodlight? Or, that your boutique has floodlights instead of narrow beams? You’ve obviously bought the wrong beam angle and it could take a week to replace them. What do you do?

Why does this happen?

Many people don’t understand that LEDs have a couple of different beam angles. If they are meant for placing into a fixture that has a reflector. This reflector does help with the focus and light spill but all LED light emits from a 180-degree path direction. If you’ve bought the wrong type of LED, you’ll have to have it replaced ASAP.

Why do we need to fix it?

If the angle beam cannot be remedied you’ll be stuck with lights that aren’t suitable for your needs. If you bought from an overseas company, you’ll have to deal with return freight charges that can be expensive. This is why it’s best to buy LED products domestically.

How to fix it?

You’ll have to contact the company if you’ve bought fixtures and arrange for a return or exchange. If they’re a price difference you’ll have to pay for that as well. Or perhaps there may be a price return instead.

15. The blue light pollution of LED

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (16)Some LED lights are quite bright if you order higher Kelvin since these can be brighter. The common problem is that they have higher levels of blue light that can be damaging to your eyes. Blue light can damage the retinas and is the cause of various visual problems associated with higher Kelvin levels.

Why does this happen?

It can be a simple mistake of ordering a LED temperature that sounds good in the beginning. It can be bad for offices that don’t need that kind of blue light saturation, as intense blue lights can make people have eye strain or even headaches. The only time high Kelvin is required is when precise work calls for it to be used.

Why do we need to fix it?

The comfort level for your vision is the main concern. People like working under lights that look and feel comfortable. That includes whether or not this higher amount of Kelvin is used for highly detailed work environments. Even those who use stronger lights in their job, after a while the blue light pollution can be a strain.

How to fix blue LED light pollution problem?

The better solution is to switch to a warmer spectrum that’s lower on the Kelvin chart. Colors that get warmer are easier on the eyes and also remind us of incandescent lights. This is why you see many homes with warm orangey colors instead of cold white that can contain blue light pollution.

16. Using LED light in an incandescent light fixture

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (17)Replacing bulbs at home with LED bulbs can be energy-efficient but there can be problems including overheating or dimming issues. Perhaps your lamp has a dimmer switch but it doesn’t work with your LED bulb. Maybe the bulb doesn’t work well inside a certain type of fixture due to the cover.

Why does this happen?

All LED bulbs that are meant for use inside incandescent lamps might not work well because of heat issues. They can get too hot and turn off unexpectedly. Your fixture should be able to breathe and get enough cool air so it won’t burn-out.

Why do we need to fix it?

Unless you want to have endless problems with replacing LED bulbs because they got too hot, you need to think ahead. How does your lamp hold the bulb inside, is it enclosed or is it open? Does your lamp support LED lights when you bought it? Newer adjustable lamps have a dimmer that comply with dimmable LED lights. Anything before the last decade won’t work at all.

(Video) LED Wafer light Warning!

How to fix this LED problem?

Try replacing your old lamps with new lamps that allow LED lights. This way you don’t have to troubleshoot heating issues or dimming problems. Lamps meant for LED lights also are designed so that they get enough air if they use incandescent socket fittings.

17. Using LED light at an extra-high wattage/current

What’s the issue?

Suppose you want to have more light in an area that only has a certain amount of wattage for a fixture to run on. You then buy a LED light that has high wattage only to find that it doesn’t work-out on your fixture at all.

Why does this happen?

LEDs produce light according to Lumens, not the amount of wattage. Just like incandescent light bulbs, you could get more light from higher wattage. With LED it’s all about the Lumens used. The wattage is often much lower than incandescent.

Why do we need to fix this common issue?

If you have a fixture that is rated for wattage up to 150 Watts, you would buy an LED light rated for Lumens. The wattage won’t be affected by a 25 Watt LED light whatsoever. If you put a 150 watt LED light into the same fixture, it won’t work-out well. This is because the lumen output would be more like 4 times the amount. This would be total overkill for your lamp

How to fix it?

Use the appropriate light charts that compare the size of the incandescent bulb you previously used. The wattage is calculated into Lumens. This is why Lumens are always listed first on LED lights rather than wattage.

18. Low color rendering index (CRI)

What’s the issue?

20 Common Problems with LED Lighting - How to Troubleshoot - RecessedLightsPRO (18)LED lights can include CRI which is a better form of light that helps give better crisp color illumination. If you’ve bought lighting that doesn’t have a high CRI, the comfort level can be lost. Floodlights may wash-out surfaces making an area lose focus visually.

Why does this happen?

Just like a photographer adjusts their lights for making a picture, the amount of light is carefully balanced through CRI levels. This makes images appear clearer and colors aren’t blinded by the tone of the light itself. The level of CRI is important to learn about if you’re choosing lights based on visual comfort.

Why do we need to fix it?

Certain colors that we see under any kind of lighting tend to look unnatural. With the correct CRI, this makes colors appear natural and realistic. Fluorescent lighting often makes things look green, while incandescent will give a warm orange color. Using CRI in LED lights these levels are easier to solve balancing issues.

How to fix it?

Ordering a light that offers CRI-80 is the most balanced light that makes things look more natural. With a higher amount using CRI-90 might start to look too saturated, but is still very good. The higher the CRI, the better the lit object will be.

19. Wrong LED driver

What’s the issue?

All LED fixtures come with a built-in LED driver that can fail for many random reasons. This will mean that it needs fixing by a professional lighting repair company. This also will mean that your LED driver needs to be removed so a new one can be put in. You get a new driver only to find out that your light doesn’t work. So what happened?

Why does this happen?

If you didn’t order the right driver, the fixture will not work. The light fixture needs to have the exact type of driver rated to power the LED light. If these don’t match, the light won’t have the appropriate power supply to the LED light itself.

Why do we need to fix it?

A possible driver that is too high for the LED fixture itself can damage the semiconductor. It can also be harmful to run too much wattage to LED lights that need a specific wattage to operate correctly. They’ll work for a few seconds before being damaged by excess heat built up too quickly.

How to fix it?

Always order a LED driver that has the wattage rating meant to drive the LEDs on the fixture. If the driver only needs minimal repair, then certain components inside will only need fixing, instead of being replaced.

20. Corn bulb protrudes outward outside the lampshade

What’s the issue?

If you buy a LED light that has a corn bulb shape it seems like a good idea at first. Then you find that the corn bulb doesn’t fit inside your lamp because it exceeds the length of a standard incandescent bulb. This often happens if you have a lampshade attached and then it doesn’t fit back over the corn bulb.

Why does this happen?

Corn bulbs are a bit quirky because they come in different lengths and appear like an electronic ear of corn. Their length is often longer than the incandescent bulb and is meant for certain fixtures only. Outdoor lawn lamps would be better suited for corn bulbs in this case.

Why do we need to fix it?

The problem with corm bulbs is they can get hot inside a fixture case. The heat is what ends-up killing them for their lifespan. They are intended to last a long time but with heat build-up that will amount to half a life. If you want to fix corn lights inside a lamp with a shade, you have to choose a light that fits inside accordingly.

How to fix it?

Look for a corn bulb that’s rated for your lamp’s wattage. It should not only fit but nothing that exceeds the wattage that incandescent bulbs used before. This is mainly for safety but the brightness of a corn bulb is always going to be according to the wattage conversion. A 20 watt LED corn bulb will be as bright as a 100-watt incandescent light will be.

Our conclusion

We hope that this guide was helpful for the sake of troubleshooting LED light issues. Always be sure to check with your LED supplier for whatever advice they can give for free as well. If you’re having any problems with any LED light product, remember about your safety first. Always turn off the electricity when taking a look at your LED light before doing any troubleshooting.

(Video) LED Light Dimmer Flicker


Why are my LED recessed lights not working? ›

A Blown or Damaged Bulb

Make sure your recessed lighting is switched off and the bulb itself is cool. Remove the bulb and inspect it for gray or black spots—this means it's blown. Simply replace the bulb and your recessed light should work as good as new.

What are the major defects that can occur to an LED bulb? ›

Common LED Light Manufacturing Defects
  • Overheating. Overheating leads to the lights' illumination failure and wearing out. ...
  • Buzzing noise. ...
  • Quick LED light burnouts. ...
  • Inappropriate LED drivers. ...
  • Wrong color displays. ...
  • Functional testing. ...
  • Durability tests. ...
  • Light testing.
May 27, 2022

What causes LED light failure? ›

There are a number of basic reasons for LED lights to fail but the primary issue is heat. Over-heating can be a result of a number of design and assembly issues but is still the cause of the majority of LED lamp failures – both in the fitting themselves and also the drivers.

How do I reset my LED light fixture? ›

To begin with, make sure that your LED light is plugged into an outlet. Next, press and hold the button on top of the power cord for at least 10 seconds. After this time has elapsed, release the button and wait approximately one minute for it to turn off automatically before unplugging it from its outlet.

Do recessed LED lights burn out? ›

Unlike incandescent light bulbs, LEDs don't produce light using heat. This is part of what makes them so energy efficient. The downside is that their components can be sensitive to overheating, which can cause them to burn out prematurely.

Why is half my LED lights not working? ›

If half a strand is working and the other half is not, you probably have a loose or broken bulb. Start with the first unlit bulb and work your way down, wiggling them to check for looseness. If it flickers, that's your cue to replace it.

How do I know if my LED is blown? ›

Connect the negative lead from the multimeter to the cathode (negative) lead on the LED. The LED should glow dimly, indicating it's working. If the LED does not light, swap the connection to the LED leads. The LED should now light, if not the LED is faulty.

What is the common fault of LED? ›

One of the most common and frequent problems with LEDs is flickering. In this case, the LED bulbs flickers, sometimes continuously, while sometimes, it happens randomly. The most common reasons behind this are poor capacitors or low wattage.

How do you fix a flickering LED recessed light? ›

Tighten loose bulbs

If a light bulb is in too loosely the socket isn't making proper contact with the bulb, and that can cause intermittent flickering. Even recessed lights can loosen, so check those connections first. Replacing switches can solve common flickering issues.

Why is my LED recessed light flickering no dimmer? ›

LED Light Bulbs Flickering Without Dimmer

If the dimmer isn't at fault, the flickering problem usually occurs because of one of these three reasons: there's some fault in the LED light bulb. the fault lies in the wiring. the fault is in the current regulation.

What is LED ghosting? ›

Ghosting is when LEDs can faintly glow even when the light switch is off. This is caused by leakage of current and is a common problem seen with neon illuminated switches. The LED Illuminated switches are designed to eliminate this phenomenon when used with LED bulbs and fixtures.

Which color LED may be indicating a problem? ›

Sometimes we use green LEDs to indicate that the circuit is in good condition or red LEDs to indicate that there's a problem.

What would cause a LED light to flicker? ›

But most commonly, LED bulbs may flicker or dim in your home when there are voltage fluctuations in your home's wiring. When electrical loads turn on and off in your home, this creates a change in voltage levels, which may cause the LED lights to occasionally dim or flicker.

How do you test LED lights? ›

To test your LED, touch the tip of the black probe to the cathode, or shorter end of the LED. Touch the tip of the red probe to the anode, which should be the longer end. Be sure that the two probes do not touch each other during this test, and that the cathode and anode do not touch each other.

What is the adjustment button on LED lights? ›

Brightness: The two buttons on the upper left corner are meant for adjusting the brightness of the strip light. The button on the left is for increasing brightness (+), and the button on the right is for decreasing brightness (–). Static Mode: Set 20 fixed colors in the Static Mode area.

How do you test an LED driver? ›

Use a voltmeter and measure the output voltage of the LED driver. Constant current LED drivers may be at an exceedingly high voltage, so be careful. If the LEDs have failed the output voltage of the LED driver will be at its rated output (maximum voltage output for a constant current LED driver).

How many years do LED recessed lights Last? ›

Many LED lights are rated to last 50,000 hours or more. That translates into roughly 5 and a half years, if you had the lights running 24 hours a day. That's 22 years if the lights are used an average of 6 hours per day or 45 years at 3 hours per day.

Why do my LED recessed lights go on and off? ›

By its design, recessed lighting is prone to overheating; a limit switch shuts it off to prevent this from happening. The light will turn on again once it has cooled.

Can you replace burnt out LED lights? ›

A great benefit to LED bulbs is you can repair almost everything. Premature burnouts can be caused by poor component quality, LED overheating, and voltage jumps. The good news is that you don't have to have a lot of experience to handle the repair and the cost is significantly less than the price of a new bulb.

Why is only one part of my LED lights working? ›

But the answer is simply that one colour of the RGB/W LEDs is not working within that section and needs replacing. This can be caused by static-electricity damage, or bending and twisting the strip too much, or being trod on, damaged in transit, a cheap poor-quality strip, or dry solder joints.

How do I test an LED with a multimeter? ›

1 Answer. Unsolder one leg of the LED from the circuit board and then connect the multimeter leads across the LED. Set up the multimeter for diode test if it has it. The meter will show a small voltage reading when the leads are connected across the LED in one direction and OL when the leads are reversed.

How do I know if my LED driver is broken? ›

Before an LED driver gets to this point, there are several signs to look out for. A failing driver will typically stop operating as it should, which means it stops regulating the power like it used to. The misregulation of power can lead to two significant problems, overdriving and underdriving your LEDs.

What happens if an LED gets too much current? ›

If you connect an LED directly to a current source it will try to dissipate as much power as it's allowed to draw, and, like the tragic heroes of olde, it will destroy itself. That's why it's important to limit the amount of current flowing across the LED.

Which are common lighting mistakes? ›

Selecting the Wrong Colour Temperature

Getting the colour temperature right is one of the most common lighting mistakes. It is important to set the tone of a space in your home, and this can be done by selecting the right colour temperature of your globes.

Why is my LED ceiling light fixture flashing on and off? ›

Possible Causes for Visible Flickering

The driver acts as the main power supply for LED lights, and any issues such as heat over time may cause fluctuations in the DC voltage, which will lead to the light source flickering. Another potential cause for LED light fixture flickering is loose wiring or a loose bulb.

How do I know if my LED backlight is broken? ›

As backlight failure is a very common issue, this is the first thing to test. To do so, the easiest way is to power on your screen, put a flashlight very close to it and check if you can see the image through. The image would be very dark, like turning the brightness of the screen very very low.

How can you tell which LED is burned out? ›

Simply bring the light tester close to each bulb. The tester's indicator will light up when it's near a functioning bulb. If you have a non-contact voltage detector, bring the detector close to the wire section between each bulb to test for voltage. The dead section of wire will be the section after your bad bulb.

How do you tell if an LED light is burned out? ›

If your LED does not light up, it may be burnt out or defective. If your LED doesn't light up, try testing other LED lights right after it. If they light up, you can be sure that the first LED doesn't work.

How do you know if LED lights are blown? ›

Easiest way to see if it is damaged is to connect it to a battery and see if it lights up. The difficulty is that you can't disassemble the the white plastic unit, so if the LED does not light, the connection wires, resistor or LED itself may be damaged.

How much does it cost to fix LED backlight? ›

How much does it cost to replace LED strips on TV? It costs between $100 and $125 to replace one LED backlighting strip, including all necessary components and labor. Repairing older TVs is more expensive. Parts for these televisions may be difficult to find.

How long should an LED backlight last? ›

One of the biggest advantages of LED light fixtures, is their extended lifespan. While incandescent light bulbs were built to last around 1,000 hours, the most enduring LED light fixtures have been tested to last as long as 100,000 hours. On average LED light bulbs will not have to be changed for at least 20 years.

How long do backlight LEDs last? ›

Unfortunately, LED backlights used in LCD displays burn out over time. If used at high or maximum brightness, which is necessary for outdoor applications, an LED backlight will last between 40,000 to 60,000 hours. Or, about 4.5 to 7 years.

Do LED lights stay lit if one burns out? ›

Luckily with more current light strings such as LED Light strings, they do not work the same way and only require a single replacement of anyone bulb. This is because LED lights don't use filaments to glow, so they can continue working even when there's just one dead light in the string!

Do LED lights burn out or just flash? ›

All LEDs will burnout eventually, but there is a significant difference in speed of burnout between a low quality LED and a high quality LED. It is worth paying a bit extra to ensure your bulb lasts longer. Note: Low quality bulbs are the cause of most problems with LEDs.


1. Recessed LED Can Light Burnt Out or Bad Wire Connection? How to fix for Free!
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3. Flickering LED lightbulbs - How to stop it.
4. How to Troubleshoot and Repair Lighting Problems
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5. Ultra Slim LED recessed light - What to look out for and why do they fail. Sunco verse Ensenior
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6. Why LED Dimmers Flicker. LED Dimmer Switch problems. LED Dimmable Bulbs. Light bulbs flickering.
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