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From: hah@inteloa.intel.com (Hans A. Hansen)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: 2000 troubles.
Keywords: 2000 Trouble
Message-ID: <5034@omepd.UUCP>
Date: 10 Oct 89 21:41:51 GMT
References: <1907@cs-spool.calgary.UUCP>
Sender: news@omepd.UUCP
Reply-To: hah@inteloa.UUCP (Hans A. Hansen)
Organization: NES, Inc.,  Portland, OR 97221,  (503) 246-9311
Lines: 36

In article <1907@cs-spool.calgary.UUCP> pepers@cs-sun-fsb.UUCP (Bradley Pepers) writes:
$
$Help! My 2000 seems to be fried.
$
$System: 2000 (unexpanded :-( ) , 2 3.5 drives, <- standard no frills system
$Symptom: - display occasionally getting messed up. Usually one small area on
$           my screen will be trashed with random garbage. Its NOT actually
$           trashing my memory - just the screen.
$         - even less often, the screen will just go black. Nothing I do will
$           get it back (turning the monitor on/off doesn't help). Computer is
$           still running so I can save things by feel. Everything is fine
$           after a CTRL-A-A.
$         - also only seems to happen on the WB screen. Can't remember any
$           trouble while in the GT terminal prog which is a custom screen.
$Res Progs: GOMF3.0, AREXX1.06, QMouse, FF, Conman, Shell303a
$
$Any ideas?
$
$    Brad Pepers

You have some bad RAM cell(s) in your CHIP RAM.  You should try to find a PD
RAM test that you can ran on chip memory.  This RAM test will need to be able
to run while the OS is operating so it should first alocate memory and then
test it.  The program can and should run out of $C00000 memory.  It should
also be able to loop for extended periods of time.

Look for "MD" a PD Memory Diagnostic,  this should be available on People
Link and it can also be found on the NorthWest Amiga Group's BBS at (503)
288-1918.

IF you can not find any bad RAM chips AND the screen always messes up at
the same location you may have a bad Paula or even F-Agnus.

I hope that this helps.

		Hans Hansen,  VP NES Inc.