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Simply is it possible for the PC (motherboard) to blow PSU'S I.E.from a shorting motherboard or other device on the mobo

Have been fixing PC'S for years but this scared me and my pocket,

The PC had a blown smokey PSU, I replaced with a second hand known working unit.... this blew.....then a new unit....... this blew
im not putting anything else in there till i talk to someone...

This PC has been troublesome for a month, ranging from a failed CPU Fan, a modem that stopped the PC Booting (no posts) and software glithches. Its tired out.


I have 2 more PSU units i have tested them in my test PC and they are working:p

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Last Post by jbennet
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Simply is it possible for the PC (motherboard) to blow PSU'S I.E.from a shorting motherboard or other device on the mobo

Yes- definitely possible, especially if it's a very hard short straight to chassis ground. We've had a few members who had similar experiences, and at least one of them found that a screw securing their motherboard had made contact with a 12V motherboard trace at one end, and was touching the bare metal chassis at the other end. A badly-shorted component like a capacitor could have the same effect.

If you have a multimeter, you might be able to narrow down the location of the fault by testing for lack of resistance between the different circuit traces/power rails and chassis ground. You should also inspect (look and smell) the motherboard and all other components for signs of physical/thermal damage.

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this pc belongs to a client, i think my course of action will be to look for the exact same motherboard, a nice new case and load in the cards one by one. I may stick in a new cpu as well as there not short of cash. Its a compromise but you have to look professional and they have vital docs and proges in the setup.
trouble is i cant find a Asus A7A266 MOBO on ebay

Thx for your help

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this happened on my dads box as the mobo wasnt on the foam so it was shorting by touching the metal sides of the case

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