> From: Dylan
>
> Thanks. Actually I am having a new problem, the CPU freezes
> after ~8 minutes operation. Power cycling doesn't work until
> it cools. I checked the digital 5V supply, looks okay.
> Wondering if either CPU, RAM, or ROM is going corrupt...

Does the DC OK signal turn off? If you have the original PS that has the
DC OK adjustment, then it may simply be a matter of turning that trimmer a
little.

The only digital parts I'd worry about are the EPROMs, because after 30
years some of the 0's could have leaked down close to the 1 level. The
solution to that is erase them and reprogram them.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...