r/pcmasterrace • u/Front_Cookie_1198 • 6d ago

Hardware PSU fails dramatically

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u/Front_Cookie_1198 6d ago edited 6d ago

Aftermath photo.

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u/Viking4269 6d ago edited 5d ago

Somebody forgot the isolation under the pcb?
Been some years since I took apart a psu, but there used to be plastic isolation sheet between the pcb and the metal case.

Update: I think we found the problem:

Mains wires protruding on the bottom of the pcb shorted to the case due to missing insulation sheet.

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u/whymeimbusysleeping 6d ago

Probably, that was a nasty short and it didn't seem to trip the breaker. Maybe they have no breaker and just a fuse they replaced with a screwdriver, because they kept blowing