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Sat 13 Jan, 2007 07:33 am
I have been told that the power supply unit that is in every PC normally has an internal fuse to protect the components from overload and prevent fire. This is mainly just a soldered link.
Sometimes the link/fuse is quite easily seen after unscrewing the casing but it varies with the manufacturer.
I best say here that unless you are familiar with electrics don't muck about with power units.
Does anyone know where the fuse is for a Compaq unit?
Unless you repair the reason the fuse blew, replacing the fuse isn't going to fix anything. It's hard to blow a power supply fuse by plugging too many items into the power supply. Usually the power supply will just lose output voltage until your system shuts down or it acts erratically. The fuse is on the 120V side of the electronics. A blown fuse usually means you have a shorted electronic component.
The fuse should be fairly easy to find. Just trace the 120v circuit to the diode bridge. The fuse should be on the black wire side and before the bridge. A circuit tester will show you where the circuit is open.
My experience with computer power supplies is when they stop working the fuse isn't blown but it is a component failure elsewhere. Since you can usually buy a power supply for $50-100 it is much easier to just repalce it.
oops,
Didn't notice you were in the UK. Change voltage and monetary units as needed.
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