I have some Lisa parts that I acquired over time and would like to get running. My issues don't seem to follow any of the other threads or guides that are out there, so after thrashing about quite some time, I am hoping someone has enough experience to help definitively identify what the issues are so that I can get it to at least boot. From there I think that I could sort things out.
Here are the parts that I have:
2 Lisa 2's (1 is missing the faceplate, neither has a hard drive, 1 has the floppy drive and cage)
2-1/2 power supplies (1 recapped, 1 purchased as 'working', 1 that is missing the transformer)
1 profile drive and cable
1 keyboard and (mac mouse)
2 card cages
the following boards
620-0108-c recapped, traces checked, no other parts replaced
620-0108-e recapped, traces checked, no other parts replaced, 1 IO board connection was broken, so I ran a trace wire in its place
3 IO boards
620-0117-m (2/5) This one had a battery backup that I removed, was recapped, cleaned and checked for continuity (fixed a single trace that I found broken), replaced three transistors that were iffy.
620-0117-j (2/5) This one had a battery backup had been removed, was recapped, and had connectors that were replaced, but it is in rough shape, unsure continuity, generally not included in testing
620-0142-e (2/10) This one did not have a battery backup and is in excellent physical appearance - no replacement of parts, continuity that has been tested is fine
1 CPU board
2 Memory cards (512MB)
Here is what I have done:
power supply recapped one (filter caps were fine and were not replaced), other was supposed to be working
motherboard (see above)
IO board (see above)
I have read that the minimum assembly to boot is the card cage, motherboard and IO board, so I installed those, put in the power supply, defeated the 2 case switches (no mouse or keyboard attached) plug it in and the power button instantly lights up.
Allowing a case switch to close turns off the power light and there is an audible click. This happens with either Lisa, either PS, either MB and either IO board.
Suggestions on how to check out a power supply, without it being installed in the Lisa
Suggestions for where to check or what to try next?
Edited by Juror22, 08 July 2017 - 04:39 AM.