Matthew H
  • Member for 2 years, 11 months
  • Last seen more than 1 year ago
How to repair an old motherboard
Accepted answer
4 votes

What are steps to do this repair? Should I replace all broken looking parts and try to turn it on? It depends on how you define "repair". Do you consider a "repair" as 1. "fix the broken parts", or ...

View answer
PLATO & JS99'er
4 votes

There is a lot of activity around PLATO in the retro-computer scene lately thanks to one particular person, Thom, who has been porting a PLATO terminal to many retro computers including the 99/4A. He ...

View answer
Commodore PC-1 power supply measurements off
2 votes

If you tested with: PSU -> ammeter -> 2-wires -> J9-1, J9-2 And the computer did not start (but works with the meter out of the circuit) then I would suspect the meter is not capable of passing the ...

View answer
Is there a comparative analysis of the evolution paths of chips inheriting from TMS9918?
2 votes

If don't know if anyone has done a "comparative analysis" of the evolution of the 9918A, but here is generally a lot of forum discussion about what was added to later derivatives of the 9918A, i.e. ...

View answer