Re: pc power supply short circuit mishap

Inside the power supply, there should be a fuse. In many of these
supplies the fuse is a wired type fuse (pig-tail fuse). It will be
soldered to the circuit board with its wires. Normaly, if the power
supply fuse is blown, there are more serious problems than just the
fuse.

Take care that inside of a computer power supply there are very high
voltages, and it can give a very strong shock. There are serious safety
issues with these supplies. These supplies are designed to not be
serviceable.

--

JANA
_____


<n@xxxx> wrote in message news:WNvZj.15$SA7.11@xxxxxxxxxxxxxxxx
Hi everyone,


I'm sorry for my low level knowledge about electronics. I hope this
group
can help me. I use a compaq Tower PC from 1998.

It still functioned admirably, but I had connected a fan to one of the 4
cable (red black black yellow) plugs
which also go into hard disk and cdrom drives, using wires I put loosely
inserted into the plug.

Unfortunately, I caused in this plug a short circuit by pulling the
loose
wires which connected
this fan to the plug and had the red and black ones touch each other for
a
second.

However stupid this may be, I first thought no damage was done to the
power
supply. However, the ATX motherboard power switch did not start the
computer
no more. I thought the motherboard was gone as well by then.

I bought a new power supply, and the problem is over, for now.

I still hope I can fix the first, older power supply, because the new
power
supply
stated on the box that there was protection against short circuits.

Is it possible that only the small fuse in the old power supply has
blown,
or that I can repair the power supply ? The short circuit i caused only
lasted for a second maybe.

MTIA,

peter









.

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