Path: utzoo!attcan!uunet!tektronix!reed!psu-cs!kirkenda
From: kirkenda@psu-cs.UUCP (Steve Kirkendall)
Newsgroups: comp.sys.atari.st
Subject: Re: Broken ST
Message-ID: <1698@psu-cs.UUCP>
Date: 24 Feb 89 19:14:15 GMT
References: <836@wpi.wpi.edu> <71682IA0@PSUVM>
Reply-To: kirkenda@psu-cs.UUCP (Steve Kirkendall)
Organization: Dept. of Computer Science, Portland State University; Portland OR
Lines: 20

In article <71682IA0@PSUVM> IA0@PSUVM.BITNET writes:
>I also have a broken 520 STFm, which I was trying to upgrade to 2.5Mb.  The
>upgrade unit did not fit well in the case, so I was trying to adjust the
>template which pushes into the MMU chip, then powering up and counting memory.
>At one point, the system failed to boot.  So I removed the new ram.  It still
>won't boot.

This is just a guess, but...

The "template" which you insert between the MMU chip and its socket probably
bent some of the socket's connectors, so that they no longer make a reliable
connection to the chip.  If this really is your problem, you can fix it by
taking a piece of wire, bending it to make a hook, and using the hook to
pull the connectors back into the proper shape.

(I had a similar problem once, and that fixed it.)

-- 
"If I seem insensitive to what you're going through,
	keep in mind that's the way I am." -- Mr. Spock