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From: pnm@goanna.cs.rmit.oz.au (Paul BIG-EARS Menon)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Mac Plus and flaky screen display
Message-ID: <3610@goanna.cs.rmit.oz.au>
Date: 23 Aug 90 22:19:48 GMT
References: <1990Aug23.183527.13103@swbatl.sbc.com>
Organization: Comp Sci, RMIT, Melbourne, Australia
Lines: 25

gilstrap@aslan.sbc.com (Brian Gilstrap) writes:

>Problem (Started about three days ago):
>--------------------------------------
>The screen suddenly goes black and after a light tap on the right side of the
>mac, the screen comes back.  Typically, applications are not bombed but do
>end up losing data (e.g. cumulative scores in a game go back to 0).


Resolder your analogue power supply (the vertical board on the LHS of the
Mac).  You have a dry joint or two.  This has occurred that many times, its 
becoming predictable with our geriatric Macs.  If you take it to your "dealer"
they may charge you an analogue board "swap" fee.  It's the
equivalent of arthritis [their joints are squeaking :-)]


    Paul Menon,
    Dept of Computer Science,
    Royal Melbourne Institute of Technology, 
    124 Latrobe Street,
    Melbourne 3001, 
    Victoria, Australia.

pnm@goanna.cs.rmit.OZ.AU
PH:	+61 3 660 3209