Quote:
Originally Posted by wireties
I am an EE also
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My apologies, I didn't realize.
I have only repaired boards with this fault that I have intentionally broken on the bench.
I would verify the stability of the power supplies, unloaded and at 2Amps. I would also manually check each PWM and Relay channel on the bench before handing it back to the students.
Can you check what revision number the board is?