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Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!decwrl!amdcad!amdimage!prls!philabs!pwa-b!mmintl!jeffm
From: jeffm@mmintl.UUCP (Jeffrey Miller)
Newsgroups: net.micro.apple
Subject: Re: Need replacements for old Apple ][ motherboards (or pointers)
Message-ID: <1209@mmintl.UUCP>
Date: Fri, 14-Mar-86 13:27:30 EST
Article-I.D.: mmintl.1209
Posted: Fri Mar 14 13:27:30 1986
Date-Received: Mon, 17-Mar-86 03:57:04 EST
References: <228@ccnysci.UUCP>
Reply-To: jeffm@mmintl.UUCP (Jeffrey Miller)
Organization: Multimate International, E. Hartford, CT
Lines: 34


In article <228@ccnysci.UUCP> alexis@ccnysci.UUCP writes:
>A charitable institution has a few VERY old Apple ]['s. They all have the gold
>power supply. Three are failing constantly, anywhere from 1 to 3 hrs. after
>power-on(sometimes even less). I am pretty sure the motherboard is heat-warped
>since opening the top and pressing down all the chips (I guess they get forced
>up) will restore operation for a while... then you have to do it again.
>Since repair is impossible (if that's wrong, do tell...) .........

*
Your motherboards are probably OK.  What age & heat usually cause is a bad
contact between pin and socket.  You can remove chips and clean them with
an eraser, or even simply clean them with non-residue contact cleaner.
Sometimes just a real good reseating will cure problems, especially if
pushing them down does the job for a while.  Are you sure that it's the
pushing or is it the cooling off period that temporarily fixes your pro-
blem?
For a large selection of Apple replacement parts try the Computer Shopper
Magazine (out of Titusville FL).  There are ads all over the mag and an
Apple stuff for sale section.
                                     Jeff

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        *       Jeff Miller                             *
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