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My grandfather, while a flight surgeon, learned about microprocessors on this beauty in I want to say 1983 or 1984. He later purchased one for us grandchildren
by atdrummond 5y ago
My grandfather, while a flight surgeon, learned about microprocessors on this beauty in I want to say 1983 or 1984. He later purchased one for us grandchildren and spent the 1980s and 1990s showing us how to program these devices. Most of us hated it but I fell in love - it definitely tracks that I was the only member of the third generation to go into tech (or at least directly).
Does anyone know of a firm that repairs these or a guide to fixing them one's self? Our's bit the dust a few years back and I have an inkling what's wrong but I don't want to accidentally make the situation more desperate by charging in blind.
- unwind 5y agoSend it to Ben Heck, or any of the several other electronics YouTubers. Check interest/rate (if applicable) first, of course. Good luck!
- Luc 5y agoThese are very simple computers. You could probably diagnose the problem with a multimeter and a logic probe (or oscilloscope). You'd check the supply voltages, then check the clock on the CPU, check the reset pin etc. But very often the problem is a capacitor that has gone bad, e.g. on the power supply. Have a look at arcade game repair guides. This one seems decent: https://forums.arcade-museum.com/threads/how-to-fix-pcbs-a-beginners-guide.177192/ https://forums.arcade-museum.com/threads/how-to-fix-pcbs-a-b... Make sure socketed ICs are properly seated. Good luck!
- atdrummond 5y agoI've checked the ICs in the past and there weren't any socketing issues but I haven't had a chance to take a deeper look at the board since then. I'll give it a more honest college try based on your encouragement.