The only difference I've found so far is the wiring of LK8-LK13There's precious little differences, and they're all listed in the TRM.
That's my next move once I've put it back together. I've removed IC10 and ICs 28-31 because they looked pretty bad. IC10 and IC28 failed testing with a TL866. The latches tested OK and all the traces buzz out fine.Waiting for some replacement ICs.Do you have a scope? Have you done the address bus walk?
That's what I thought but couldn't find anything definitive.No. No POST in anything less than 2.01
Good to know. Maybe the dealer just replaced the cardboard PSU cover with a proper one!That's FUD. ignore it.
I don't think so, it was weird that it was pretty much 1/2 of Vcc elsewhere. I'll get the scope on it and see what's what.I suggest you may be measuring the wrong pins.
Another problem will be the keyboard. Because of the rot in the sockets the ribbon is damaged. Unfortunately not just at the end, one of the traces has a hole in the trace further up. Conductive paint?
I noted that you attached an external keyboard. I plan to fit headers to allow this, what keyboard do I need (I have one from an A300/400) and what are the connections?
Statistics: Posted by rodders — Mon Apr 07, 2025 1:20 pm