OK, I went back and did some more digging and snapped
this unfortunately crappy phone cam pic and
this one.The main problems it seems to have:
-It seems to reset when jarred/jostled/coin door shut/etc (I assume this is just something loose somewhere
-especially when it resets, the monitor has a tendency to fade out; hard to explain, but it almost looks like the sprites are ghosted with a bright drop shadow. Monitor going bad? How much would it cost to repair?
-Both coin slots had issues, wasn't able to use a coin to get a credit. Fiddled around and eventually got a few, but the start buttons failed 99% of the time.
-the few times I actually got a game to start, the graphics seemed to corrupt pretty quickly -- each row of invaders turned into a straight line of pixels
-Sound did seem to work, but cut out as the graphics freaked out
-buzz seemed to be gone, maybe just some feedback from something else
I'm just wondering how much cash and effort would be required to turn it back into a reliable SI machine, and if it's something that an electronics newbie could attempt? (building computers is the closest I get) I know there's no cut and dried answer, but any thoughts would be appreciated.