What makes you think something is wrong with the power supply? Looks like it's working fine, but several of the lights are out. Are they all LED, I assume? There's probably not much you can do. If the lights are blown or of the circuit board is broken, either way I think your best bet is probably too just get a new one. I'm guessing those are COB LEDs and aren't really replaceable.Good morning Gents, just curious if anyone has ever done any troubleshooting of these sign inverter power supplies?