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Burning smell from PSU

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3 replies

by amurphy

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Hi,

I have been building my new PC from scratch, and although i've had many problems, is seem to be getting there.

There was a high pitch sound coming from the system fan, which i inspected and saw was just a wire touching the centre as it was spinning, so i moved it, the problem was i stubbed my finger on it which slowed it down, then i started smelling a slight burning smell from the PSU so pulled out the power straight away.

Could me slowing the fan have caused the PSU to make the burning smell as it started straight after i touched it and i have had the computer powered up for quite a while before and hadn't smelt anything, and do you think it is safe to test it again as it is all brand new kit and i don't want to be buying anything else!

3 replies

by robo_dev

would not normally cause a burning smell.

I would be concerned that whatever wire was hanging loose in there has touched something else and/or the insulation on that wire has worn thru.

I would take apart the PSU to see what was burning, and see what wire was loose in there.

(Note about safety: unplug the power and don't touch anything, especially the curcuit board under the big round cylinders that look like batteries...those are capacitors, and can give you a nasty shock since they can store voltage for a very long time)

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