JJL101@PSUVM.BITNET (J.J. Lehett) (11/29/89)
I know this may be an old topic....but I really would like to stop having
to drop my ST before I boot it to work properly :) I know its a looses
chip problem (at least pretty sure it is), but don't know which it is.
Often, to get the 520 ST with 1 meg upgrade (EZram (old version)) to boot
up properly I have to drop the machine from about 3 inches, and most of the tim
e it will then work fine.....can anyone out there please give me some advice
before I end up giving the thing a concussion! :)
Thanks!
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* J.J. * JJL101@psuvm.bitnet *
* * Penn State Center for Academic Computing *
* John Lehett * Computational Mathematics *
********************************************************************ge@kunivv1.sci.kun.nl (Ge' Weijers) (11/29/89)
JJL101@PSUVM.BITNET (J.J. Lehett) writes: > I know this may be an old topic....but I really would like to stop having >to drop my ST before I boot it to work properly :) I know its a looses >chip problem (at least pretty sure it is), but don't know which it is. In my 1040 it was the memory controller. The ST was sensitive to the slightest tremor, so I opened it up, and touched the ICs. I took out the culprit, cleaned it by scratching the contacts of the IC and the socket, and put it back together. Everything works fine. One warning: visit an electronics store first, and get a anti-static wrist band to connect yourself to the Atari PC board. CMOS is not as sensitive as a few years back, but those Atari ICs are expensive. Opening the ST was not very problematic, I only needed pliers and a set of screwdrivers. Be careful when you take these LLC ICs from their sockets. Ge' Weijers Ge' Weijers Internet/UUCP: ge@cs.kun.nl Faculty of Mathematics and Computer Science, (uunet.uu.net!cs.kun.nl!ge) University of Nijmegen, Toernooiveld 1 6525 ED Nijmegen, the Netherlands tel. +3180612483 (UTC-2)
glk01126@uxa.cso.uiuc.edu (11/29/89)
I had a similar problem with my 520 and 1040. Open it up and take the ball of your thumb and press and wiggle any of the chips which are not soldered to the board... -Spieu!
hcj@lzaz.ATT.COM (HC Johnson) (11/30/89)
In article <89332.112515JJL101@PSUVM.BITNET>, JJL101@PSUVM.BITNET (J.J. Lehett) writes: > > I know this may be an old topic....but I really would like to stop having > to drop my ST before I boot it to work properly :) I know its a looses > chip problem (at least pretty sure it is), but don't know which it is. pull an reseat the square chips. also consider tightening their sockets (carefully). Occationally, a EZram needs to be pulled out of the MMU and reseated. Howard C. Johnson ATT Bell Labs att!lzaz!hcj hcj@lzaz.att.com