[TechAssist] Re: ATX Computer-How does it start up?
- From: "Ty" <ty1k@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 4 Jun 2004 11:38:22 -0700
Roger,
Go to Google. There is a wealth of information on ATX Motherboard.
Ty
Tiberius Kraemer
BLUE STAR ELECTRONICS
3312 Silverton Rd. NE
Salem, Oregon
Phone: 503 391 1491
Mailto:ty1k@xxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Roger G
Sent: Friday, June 04, 2004 9:25 AM
To: techassist@xxxxxxxxxxxxx
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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