Problem with MacPlus CRT

Article View: comp.sys.mac

Article #43545

#43545

From: Todd Sellers
Date: Tue, 06 Jun 1989 18:52

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My 5 month old MacPlus has recently developed a problem with the CRT.  
After the computer has been on for a while, the slightest touch will
cause the CRT to go black.  I can sometimes bring it back by tapping
the Mac on the left side.  I took it into my local Apple dealer and
could not get it to fail.  He re-soldered some joints on the analog
board anyway and said that it should be fine.  I took it home and in
less than 3 hours it started going black again.  I immediately took
it back to the Apple dealer who still has it and cannot get the CRT 
to go black.  This all started happening when I moved my lamp
from the right side of the Mac to the left side.  It is an incandescent
lamp with a 40 or 50 watt bulb.  I know that the lamp shouldn't make
any difference, but I can't find any other explanation.  I did
have the Apple dealer install a 2M Upgrade kit about 2 months ago
but he said that he checked the simms and they were fine.  If you 
have any ideas/suggestions please respond by email.

						Thanks to all...

						Todd

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Message-ID: <4554@ncrcae.Columbia.NCR.COM>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!ncrlnk!ncrcae!sellers
From: sellers@ncrcae.Columbia.NCR.COM (Todd Sellers)
Newsgroups: comp.sys.mac
Subject: Problem with MacPlus CRT
Summary: CRT blacks out after warming up
Keywords: Dealer can't find problem
Message-ID: <4554@ncrcae.Columbia.NCR.COM>
Date: 6 Jun 89 18:52:05 GMT
Reply-To: sellers@ncrcae.Columbia.NCR.COM (Todd Sellers)
Followup-To: comp.sys.mac
Organization: NCR Corp., Engineering & Manufacturing - Columbia, SC
Lines: 19