alexis@ccnysci.UUCP (02/27/86)
A charitable institution has a few VERY old Apple ]['s. They all have the gold power supply. Three are failing constantly, anywhere from 1 hr. to 3 hrs. after power-on (sometimes even less). I am pretty sure the motherboard is heat-warped since opening the top and pressing down all the chips (I guess they get forced up) will restore operation for a while... then you have to do it again. Since repair is impossible (if that's wrong, do tell...) I would like to purchase some Apple-compatible motherboards to replace them. All they have to do is emulate an Apple ][ (or a ][+), and I can even use the old ROMS from my motherboards to make sure I don't have any compatibility problems. What I need, then is this: Three Apple ][ or ][+ compatible motherboards which: 1) can't draw more power than Apple's (I'll be using the old power supply) 2) must be the same shape, so I can stick it in the old cases. 3) must have eight slots, and the standard keyboard & power jacks. 4) must cost less than $150. Used boards are okay if I can test them... Any pointers to corporations which make these would be greatly appreciated. Thanks, Alexis ...ihnp4!physics!ccnysci!alexis
jeffm@mmintl.UUCP (Jeffrey Miller) (03/14/86)
In article <228@ccnysci.UUCP> alexis@ccnysci.UUCP writes: >A charitable institution has a few VERY old Apple ]['s. They all have the gold >power supply. Three are failing constantly, anywhere from 1 to 3 hrs. after >power-on(sometimes even less). I am pretty sure the motherboard is heat-warped >since opening the top and pressing down all the chips (I guess they get forced >up) will restore operation for a while... then you have to do it again. >Since repair is impossible (if that's wrong, do tell...) ......... * Your motherboards are probably OK. What age & heat usually cause is a bad contact between pin and socket. You can remove chips and clean them with an eraser, or even simply clean them with non-residue contact cleaner. Sometimes just a real good reseating will cure problems, especially if pushing them down does the job for a while. Are you sure that it's the pushing or is it the cooling off period that temporarily fixes your pro- blem? For a large selection of Apple replacement parts try the Computer Shopper Magazine (out of Titusville FL). There are ads all over the mag and an Apple stuff for sale section. Jeff ************************************************* * Jeff Miller * * Multimate International Corp. * * 52 Oakland Avenue * * East Hartford, CT 06108-9911 * * (203) 522-2116 x257 * * UUCP: * * ...!seismo!utah-cs!utah-gr!pwa-b!mmintl!jeffm * * * --> * P.S. I can't *mail* to ARPA but I can receive * <-- --> * from there. News I *post* should get there. * <-- ************************************************* *