Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!sunic!chalmers!mathrt0.math.chalmers.se!ranko!hoven
From: hoven@cd.chalmers.se. (Hans-Ove Frimodig)
Newsgroups: comp.sys.ibm.pc
Subject: Suntac 286 boot problem
Message-ID: <1990Mar3.022450.13647@mathrt0.math.chalmers.se>
Date: 3 Mar 90 02:24:50 GMT
References: <1990Feb15.155612.27527@lth.se> <90053.222532GILLA@QUCDN.BITNET> < <695@pmday_1.Dayton.NCR.COM>
Sender: news@mathrt0.math.chalmers.se (Evald Nyhetsson)
Reply-To: hoven@cd.chalmers.se ()
Organization: Chalmers University of Technology, Gothenburg, Sweden.
Lines: 12

I have a 12 MHz Suntac 286 Motherboard. My power supply died yesterday
and when trying 2 different power supplies the Suntac card does not
always boot. The whole screen is white. I have to cycle power off-on
until the screen goes blank and the machine boots. (Reset button doesn't work)
I have tried different things with the Power-OK signal but nothing seems
to fix the problem. My current theory is that the Suntac MB is very sensitive
to Power sequence timing, and that some kind of lock-up occurs often
with certain power supplies.
Do you have any suggestions ??

/Hans-Ove Frimodig
hoven@cd.chalmers.se