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Okay, thanks everyone for the help.

First, when I said signal generator on my LA, I meant pattern generator. I've used that pin the past to send different signals down each line of a bus to trace...

Okay, thank you. I think I've got a few 2114 chips lying around. I'll try to swap them out.

I do know what a NOP generator is, in theory. Never built/used one though. I do happen to have a...

Still looking for help with this, but I've made some progress.

A few 74LS244 chips have been replaced, as they had rusted through pins. Replaced two memory chips that weren't showing any signals...

My replies don't seem to post. So sorry if this is a duplicate post.

Pin 37 shows a decent square wave, shown below. I've got nothing on J7's HSync or VSync lines, whether or not I get the rare...

Another tidbit of info, I have no voltage on supply pin 24 of UD8. Checking traces now...

Nothing on 6502 pin 7 (0V), with or without the chirp.

I'm getting 5v constant on pin 3 of J7 (that's the Vsync, right?). Same on pin 5 of J7 (Hsync, right?). That's with or without the rare chirp.

Also, regulators are pretty cool, even the -5v one without any heat sink. No chips get hot.

My multimeter and scope have always agreed perfectly in the past. But now that you mention it, the three voltage regulators I was using as replacements (one new out of the box) were reading a little...

Well, you very helpful folks appear to like a challenge with these things. So here's me begging for help!

The story so far:

Purchased a dead SuperPET. It's got a 8032090 revision board and...

These were sold to schools to be used in electronics courses. I believe they came straight from Radio Shack, because our local Radio Shack staff was involved in getting them for the school (cheap or...