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From: shatara@islnds.enet.dec.com (Chris Shatara)
Newsgroups: comp.sys.apple2
Subject: PCT/Monitor Problem
Message-ID: <1855@mountn.dec.com>
Date: 16 Aug 90 00:07:51 GMT
Sender: news@mountn.dec.com
Organization: Digital Equipment Corporation
Lines: 25


My system started exhibiting a wierd problem this evening so I need some 
help in diagnosing it.  I have a IIgs with a PCT installed.  I've had the 
PCT for three months now.  Till today ...no problems.  This evening while 
in the finder, I executed the program to activate the PCt and get me in 
MSDOS land.  This usually causes the "clear & jump" {no other way to 
describe it} and then I get the usual messages while memory is being sized 
etc.  Well tonight the moniter displayed horizontal bars, as if I had lost 
the horizontal sync.  Powering cycling the monitor relieved the problem.  
All is well until I run another program which fiddles with the screen's 
attributes {still trying to localize it further} and the problem comes up 
again.  I can't seem to make the problem happen in Apple mode.  It 
therefore seem certain it is PCT hardware related.  

    The obvious choice would be the color switch board.

    Has anyone experienced this problem?

/chris

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|        Chris Shatara       |      Internet:    shatara@islnds.enet.dec.com|
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