mark0x01's latest activity

Thanks, that helps heaps. The AA12090, used by Tandy, is very similar in design and has some useful testing info. I'll check a few...

Might be these tired old eyes, but Z1 looks to read as 1N734, but that would be 68 volts, which wouldn't protect the 5v rail. I might...

I don't know if this belongs more in the Vintage Computer Software section, but for the first time, it has become possible to run (a...

Thanks, and R6, the one next to it. Heat certainly alters the colors and values, so hard to replace with certainty. I'll compile a...