Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!xylogics!bu.edu!inmet!arra
From: arra@inmet.inmet.com
Newsgroups: comp.sys.zenith
Subject: Re: Zenith freezes
Message-ID: <34600001@inmet>
Date: 26 Nov 90 15:48:00 GMT
References: <183425@<1990Nov23>
Lines: 17
Nf-ID: #R:<1990Nov23:183425:inmet:34600001:000:659
Nf-From: inmet.inmet.com!arra    Nov 26 10:48:00 1990


I have a Z-248 (AT "compatible") that displayed similar "freezing" symptoms.
I got unreasonably high repair estimates (in my opinion), so I tried myself.
I noticed that a short power off time resulted in very short "on" time, and
a longer off time gave a longer on time; seemed possibly a heat related problem.
The 80286 chip was running VERY hot, and if I kept it artificially cool, the
machine stayed up longer without hanging.

For less than $50 dollars, I replaced the CPU, and it runs fine now.
=====================
 arra@inmet.inmet.com
 Arra Avakian
 Intermetrics, Inc.
 733 Concord Ave
 Cambridge, MA 02138
 (617)661-1840 x4500
=====================