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keithwalton · 19-12-2004, 14:24

Capacitors do tend to give out a high pitched squeel on there way out. They're about the only component used on motherboards that'll make any sort of noise really. Anything rotational can squeel
Apart from a fan failing, all i can think of is a wire brushing up against a fan, they do make one heck of a noise.
And yes a blown capacitor makes one heck of a mess if it ejects its dielectric fluid. (we did the experiment in phyisics of ramming large voltages through a cap backwards).
Btw the first thing to go in a power surge would be the caps in the psu.

19-12-2004, 14:24	#25
keithwalton Inactive Join Date: Jul 2003 Location: Southampton Age: 42 Posts: 1,089	Re: High pitched squeek from PC! Capacitors do tend to give out a high pitched squeel on there way out. They're about the only component used on motherboards that'll make any sort of noise really. Anything rotational can squeel Apart from a fan failing, all i can think of is a wire brushing up against a fan, they do make one heck of a noise. And yes a blown capacitor makes one heck of a mess if it ejects its dielectric fluid. (we did the experiment in phyisics of ramming large voltages through a cap backwards). Btw the first thing to go in a power surge would be the caps in the psu.