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From: davisson@milton.u.washington.edu (Gordon Davisson)
Newsgroups: comp.sys.mac.hardware
Subject: Re: RAM for a Mac + and monitor
Message-ID: <7975@milton.u.washington.edu>
Date: 22 Sep 90 03:39:24 GMT
References: <71349.26F6CEFC@cmhgate.FIDONET.ORG> <670@philica.ica.philips.nl>
Organization: University of Washington, Seattle
Lines: 26

In article <670@philica.ica.philips.nl> lex@leest.ica.philips.nl
(Lex van Sonderen) writes:
>I installed 4Mb in my Plus one year ago and had only problems since.
>It had a internal 20Mb HD for 3 years, which draws power from the Mac
>and without a fan! It was very reliable (no complaints whatsoever) until
>I upgraded to 4Mb when problems started: the Mac becomes very hot, suddenly
>stops working, does not start-up until cooled down. It usually restarts
>when it tries to access the floppy, so when it needs extra power.
>Removing the back of the housing solves all this, which suggests that
>extra cooling would solve it.
>I have now removed the HD and try to work with a 4Mb Plus, but it has only
>slightly improved (a sudden restart after 2 hours instead of 30 min).

Sounds to me like you have a bad connection on the cable that carries
power to the motherboard.  The most likely suspect is the +5V line (the
blue wire in the cable that runs from the middle of the analog to the
motherboard, in position 6 where the polarizing gap is position 2).
Probably the contacts have corroded and/or lost their spring.  There's
no need to replace the mac because of a problem like this; if you can't
fix it yourself and don't know any local component-level repair shops,
send it to Soft Solutions (call 503-461-1136).

--
Gordon Davisson
Westwind Computing	(206) 632-8141
4518 University Way NE, Suite 313, Seattle WA 98105