There are primarily two types of components in an LED fixture: LED Drivers and LED Modules.
When fixtures are not functioning properly, one of these has typically failed. Determining which
component has failed can be difficult depending on the symptoms. There are, however, a few
troubleshooting techniques to identify whether the problem lies with the LED driver or LED
• If some LEDs on the module are lit while others are not, or if there is visible damage to the
module surface or LEDs, the cause of the fixture’s failure is most likely the LED module.
• If the fixture is flickering, check the wiring of the driver to the module. If everything is
properly connected, the cause is likely a faulty driver.
• If all of the LEDs on the module are dim or not producing light, the cause is likely a faulty
driver but also check the following:
o If the system is connected to a dimming control, disconnect the dimming circuit from
the driver to verify that the problem is not in the lighting control programming.
o Module connectors can be delicate. Check all connections to make sure that they
are intact. Also, be sure that the wire conductors have not been severed within the insulation or by the fixture’s sheet metal