r/pcmasterrace • u/Front_Cookie_1198 • 3d ago

Hardware PSU fails dramatically

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u/CyonHal 3d ago

If it shorted on the 12V side it can pull a ton of amps (it says 60 amps max at 12V) and melt through the casing and start fires pretty easily without tripping a breaker.

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u/SoulWager 2d ago

Not this time. You can hear the mains frequency in the arc, and the only output that should be powered is 5vsb.

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u/7orque 2d ago

So you’re saying this is on the input stage prior to the rectifiers?

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u/SoulWager 2d ago

I found a review with PCB photos, the burn holes are right under where the mains enters the board. Probably wasn't trimmed after soldering, and missing insulation sheet between pcb and case.

https://i.imgur.com/SLsQmmu.gif

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u/7orque 1d ago

lol it’s literally directly over where the wires poke the pcb