Contents
What causes LEDs to fail?
Especially for high power LEDs, thermal contact and heat dissipation are very critical effects impacting degradation. Mechanical or thermal stress, as well as a reaction with outgassing materials can cause failures in the internal construction of an LED.
What burns out an LED?
Though you may not know what is causing the problem, there are a couple of reasons why your LED lights keep burning out before their time. The most common reasons for LED blowing out are high voltage, bad contacts, use of incompatible dimmer switch, or recessed lighting.
How can I tell if my LED lights are still working?
Testing LED lights is simple with a digital multimeter, which will give you a clear reading of how strong each light is. The brightness of the LED while you test it will also indicate its quality. If you don’t have a multimeter to use, a simple coin cell battery holder with leads will let you know if your LED lights are still working. Method 1
How can I test the quality of my LED light?
After noting the reading on the digital screen, look at the LED itself. If it has a normal reading but looks dim, it is likely a low-quality LED. If it shines brightly, it is probably a high-efficiency LED light. Use a coin cell battery to test your LED without burning it out.
What should I do if my LED light does not light up?
Wait for the LED to light up. If the LED is functional and the lead connections have been made properly, your LED should light up when you test it. If it does not, separate and reconnect the leads and cathode/anode to try again. If your LED does not light up, it may be burnt out or defective.
How to test the led on a battery holder?
If your battery holder has a lead connector, test your LED by inserting the anode and cathode into the small openings that line up with the red and black leads. 4 Wait for the LED to light up. If the LED is functional and the lead connections have been made properly, your LED should light up when you test it.