TSGL: Something seriously wrong with my PC

[H Davis]

Bo,  

A cheaper first repair attempt might be to replace the power switch. 
It's possible it's defective and prevents the PS from turning on. By 
detaching the control cables the switch is effectively removed from 
controlling the PS and it comes on. You might even find some info on the 
net about jumping or otherwise manipulating the control signals that are 
provided to the PS through the control cable to simulate the switch 
actions to further diagnose things.

Some links from quickly googling around:
http://case-mods.linear1.org/case-mod-101-the-atx-power-switch-demystified/
http://www.duxcw.com/faq/ps/ps1.htm
http://www.formfactors.org/FFDetail.asp?FFID=1&CatID=2

Power switch for sale here for $2.99. Cheap enough to try before 
replacing the PS:
http://www.cables4computer.com/CasesandEnclosures/PCCases/MidTower/CON-6310.html?gclid=CJXPxYjhhI8CFVB1OAodNS4K3Q

HTH
H Davis

Michael Sweeden wrote:
> It does sound like a PSU. I've replaced the PSU in several Compaq PCs with a
> green light on them with a standard ATX power supply with no problems. Your
> unit may be different, but it may not and may take a standard power supply
> just fine.
> Michael
>
> -----Original Message-----
> From: list-bounces at tsgserver.com [mailto:list-bounces at tsgserver.com] On
> Behalf Of Bo Maurin
> Sent: Wednesday, October 10, 2007 5:57 AM
> To: Tech Support Guy Mailing List
> Subject: TSGL: Something seriously wrong with my PC
>
> Hi all,
> I have a four year old PC which is quite up to date as I have upgraded
> HW as years went by.
> Last week I realized that I could not turn it on. At the back of the PC,
> there is a diode light which is supposed to have a green solid light.
> That light is now blinking and there is a small tick-tick sound from the
> PSU. When I press the "On" button nothing happens. Not even the fans
> starts spinning.
>
> I followed an advice a got from a friend to detach the PSU-MB (24 pin)
> cable in the PC, connect the PSU to a power outlet and then re attach
> the PSU-MB cable. The computer then booted normally. But when I shut it
> down, leaving the PSU-MB cable in place and try again, the computer is
> once more dead.
>
> I except that the PSU will need to be replaced, but is there anyway I
> can confirm that the PSU is the issue? The PC is from Compaq which means
> I can not use just any ATX compatible PSU.
>
> Regards / Bo
>
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-- 
H Davis   hdavis1 at gmail.com