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Repairing Power Supplies

I suggest visiting U-Do-It Electronics in Needham for any unusual or higher
quality hardware needs.  They have the good stuff and an extremely
knowlegable staff.  Chances are they have (or can get) OEM or better quality
replacement parts.

For example, when my 13 year old needed to replace the jack in his electric
guitar, the guy offered us a "military spec" replacement.  His music still
sucks, but the crackling is totally gone now with a gold-plated part :)

Radio Shack used to have OK quality and selection, but these days it would
not be my first choice, FWIW.

Chuck Young
Security Consulting
Genuity E-Services
-----Original Message-----
From: discuss-admin at [mailto:discuss-admin at]On Behalf Of
Warren E. Agin
Sent: Tuesday, June 18, 2002 4:13 PM
To: Rob Ransbottom; discuss at
Subject: Re: Power Supplies

Power supplies also may have a fuse. This happened to me not long ago.
Fortunately, I ignored the dire warnings on the cover of the power supply
and found the blown fuse inside. Unfortunately, Radio Shack did not have an
exact replacement, so I tried something close.

The point is to make sure the power supply works before buying a new

I have a little device that detects power flows without a direct connection.
You should be able to get one at a radio shack or home depot. Very useful
for things like power supplies where your only concern is whether touching
something will fry your brain.

BTW, you can buy a new poer supply for about $50.

-Warren Agin
----- Original Message -----
From: Rob Ransbottom
To: discuss at
Sent: Sunday, June 16, 2002 10:55 AM
Subject: Power Supplies

On Mon, 17 Jun 2002, Jerry Feldman wrote:

> I may also go to the show. My daughter's PC just went TU. It's a 400Mhz
> PII. I think it may be the CPU. I pulled all the boards, reseated the CPU.
> I'll probably get a spare power supply since my wife's old system has a
> power supply with a dead fan.


Despite the warnings labels, it is not difficult to replace the
fan in an AT or ATX power supply.  There may be a charge in the
capacitors in the power supply.

Can you check a ATX power supply with a multi-meter, out side of a case.
I.E. how do you turn it on?

rob                     Live the dream.

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