Hi @oscar.medina ,
Thank you for your inquiry. Are the LEDs not working when independently tested from the board? If verified indeed LED failure, agreeing with rick_1976 then most likely electrical overstress of some kind.
A few questions to troubleshoot:
- Is your ground a true ground? Does it have static, noise, or voltage spikes? This is more common with floating grounds.
- Is the voltage supply free from static, noise, and voltage spikes? An analysis of the 5v supply will help determine if this is the cause.
- Are there any inductive loads on either the 5v supply, or main voltage supply feeding the 5v supply? If there are noisy loads on the same supply, the 5v supply might not be filtering out the voltage spikes.
-As rick_1976 mentioned, wouldn’t hurt to make sure the handling and assembly is following proper ESD protocol.
A few other topics regarding static, if this is the problem:
Establishing an ESD Safe Workspace
Filter for Static discharge in audio equipment
What is an Ionizer?