[TechAssist] Re: ATX Computer-How does it start up?
- From: "Barry Thompson" <barrystv@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 4 Jun 2004 15:43:41 -0400
Check 5 volt standby purple wire
barrystv@xxxxxxx
Barrys TV
Ottawa Canada
----- Original Message -----
From: "Roger G" <rogerfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, June 04, 2004 12:25 PM
Subject: [TechAssist] ATX Computer-How does it start up?
> ATX Motherboard- Computer had 'No Power'.
> Checked power supply - works OK
> Checked continuity on front panel switch to ckt bd connector - OK
> Pulled ckt bd and checked physically - look OK. Ground continuity from
> switch connector to power connector is fine. Cannot trace where the 'Plus'
> side of switch goes to.
> There has to be some sort of 'latching' ckt to connect the power up pin on
> power supply to ground to keep it turned on. There are four TO-220
> transistors on the board - the ones I can read are FET's marked G-D-S.
They
> are heat-sinked and some are hidden behind capacitors. If I have to pull
> 'em, I have to.
> Any insight appreciated
>
> Roger G.
>
> Mr. Fix-It
> Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com
> rogerfixit@xxxxxxxx
> FAX 510-740-3641; Tel: 717-763-7098 (shop) 717-652-1703(home)
>
>
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