kamran@dialogic.com (Kamran Vaziri) (05/09/91)
I have an A500 with a rev 5 mother board and I'm constantly having to reseat the AGNUS chip. It'll work for a while, anywhere from 30min-5hrs, then the computer locks up and I get a garbled screen. When I reboot, the screen stops on green and the power light blinks. I'm at the point where I just keep the cover off because it's such a hassle taking it off everytime I use the thing. It also seems to occur earlier if I put it all together (as if to really annoy me). Who says computers don't have a mind of their own!! Has anyone else had this problem?? Anyway to solve it?? Is it the socket or the soldering?? Is it my AGNUS at all?? What day is it??? Who am I????? Where am I????????? /// ///Kam \XX/kamran@dialogic.com "Every Saturday we work in the yard, pick up the dog doo, hope that it's hard..." - Joe Walsh :)
bpv9073@sjfc.UUCP (Brett VanSprewenburg) (05/10/91)
In article <1991May08.185945.11611@dialogic.com> kamran@dialogic.com (Kamran Vaziri) writes: >I have an A500 with a rev 5 mother board and I'm constantly having to reseat >the AGNUS chip. It'll work for a while, anywhere from 30min-5hrs, then the >computer locks up and I get a garbled screen. When I reboot, the screen stops >on green and the power light blinks. I'm at the point where I just keep the >cover off because it's such a hassle taking it off everytime I use the thing. When I upgraded the Agnus in my A500 to the 1 meg version, I did some preventive maitanence. With my chip puller, because of the tiny little 'hook' on the end of it, I pried out EACH of the about 250,000 little contacts (exaggerated number) in the Agnus socket so as to make good contact with the new chip. I didn't really pull on them that hard, just a little respringing of them. Could be a bad contact in your socket, and the heating of the Agnus chip DOES make it move, so you may want to check those contacts. If you do this, be careful, those contacts are small and look fragile. Not responsible for damage etc, etc... Obligitory quote: "If you can't enjoy yourself, enjoy someone else." ==Brett
pk@wet.UUCP (Philip King) (05/13/91)
In article <1991May08.185945.11611@dialogic.com> kamran@dialogic.com (Kamran Vaziri) writes: >I have an A500 with a rev 5 mother board and I'm constantly having to reseat >the AGNUS chip. It'll work for a while, anywhere from 30min-5hrs, then the >computer locks up and I get a garbled screen. When I reboot, the screen stops >on green and the power light blinks. I'm at the point where I just keep the >cover off because it's such a hassle taking it off everytime I use the thing. >It also seems to occur earlier if I put it all together (as if to really annoy >me). Who says computers don't have a mind of their own!! Has anyone else had >this problem?? Anyway to solve it?? Is it the socket or the soldering?? Is >it my AGNUS at all?? What day is it??? Who am I????? Where am I????????? Yes, YES, YES!! I have had this problem on BOTH an A500 and A2000. Don't ask me why, I guess it's a crappy socket or something. Used to drive me bananas until I found out what the culprit was! What I eventually did that solved the problem, was to take the Agnus chip out entirely, and clean/treat the pins with "Cramolin". No problems since. Cramolin is this incredible elixir that you can buy either as little bottles from Monster Cable (as I did), or at electronics supply houses. In the form I use, the red-colored liquid cleans and de-oxidizes the contacts, and the blue-colored liquid coats and 'molecularly fills' the metal surfaces afterwards. I treated both the chip pins and the socket contacts. Cramolin is amazing stuff. Everyone who does _anything_ with hardware should have some. Hope it helps! Philip pk@wet.uucp {cca.ucsf.edu,hoptoad,claris}!wet!pk