Power distribution board

[DonRotolo]

Disconnect everything but the power inputs and re-check. Also, make sure there are no bits of metal/wire/etc shorting anything - turn the PD upside down and shake it, then clean it with air.

If the light comes on then, connect things one at a time to see which one causes a problem.

If the light is still not on, then something has gone wrong; consider getting a replacement. I have been unable to find a rule prohibiting the use of a team-repaired PD Board, but I'd hesitate to suggest attempting that. If your search of the rules also does not find anything prohibiting the use of a repaired PD Board in competition, them maybe try opening it up & seeing what you can see?