68kMLA Classic Interface

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Original Macintosh 512 no longer boots, need help diagnosing
Posted by: PB145B on 2018-04-04 19:10:25 Great to see you on this forum Verault! I’m “compaqportableplus” on the vintage computer forums.
Posted by: Verault on 2018-04-05 03:43:58 Thanks! About time I branch out..
Posted by: Verault on 2018-04-08 17:49:46 Just an update, I replaced U1 (op-amp LM324) , no change at all. I am working on getting some type of scope for testing, but U1 isnt the fault. Any other ideas?
Posted by: Verault on 2018-04-26 09:05:07 Ok been a while since I posted, been busy with work. Still looking into getting a scope however I still want to try some things. All I can seem to find online are parts listings for for the original analog boards for capacitors. Does anyone have a more thorough listing that has resistors, transistors, NPN, Diodes, etc? I would like to know what the original or replacements for these components would be just in case. this thread lists mostly just the caps that I found : Thanks.
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