Burnt PSU, what happened?

dimanche 7 décembre 2014

There was a mild burning smell coming from my computer for a few days, and then it died and tripped my apartment's circuit breaker. No explosions or visible smoke or anything. Just a buzzing noise towards the end.



The PSU is Zalman ZM460B-APS (460W) which was probably ~5 years old at this point. I only noticed this burnt coil thingy in there, but admittedly, I have no idea what other signs of damage would look like.







Why could this have happened? Could dust be the only reason? I measured my computer's power draw once and it was only 230W under full load.



Is it a bad sign that the PSU tripped the circuit breaker instead of shutting itself off when damaged? I already ordered a new PSU (Seasonic X-460FL2, hopefully that's a good one), but I'm worried the old one took my computer with it.



Anyway I'm just trying to satisfy my curiosity here, hope that's OK. Never had this happen to me before.





Burnt PSU, what happened?

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