I know I might not have much luck asking this here, but I’m hoping someone here will know the answer to this one.
I found an old arcade or pinball machine board, and I’m restoring it to working condition and donating it to my college’s industrial electronics class (the school used to teach about communications, computers, and CRT televisions before they changed the curriculum to general industrial electronics).
I looked all over the board, and I cannot find a single serial number or name. I cannot look at the ROM data on the EEPROMs because I do not have a EEPROM reader. It looks like a Galaga board, but at the same time it looks like a pinball machine board. It features a Z80 CPU, with an AY-3-8910 sound chip and 4 N82S09N bipolar 576(?) bit PROM (or static RAM, I got mixed results from the search on this one) chips.
Yes, it actually has crystals, but I took them off because they were corroded through. One was 10MHz, and the other was unmarked.
I may be way off on what this board actually is, but my gut is telling me it is an arcade game or pinball game board.
Also, any advice on how to remove this ungodly amount of chips efficiently with an iron, desoldering braid, and solder sucker would really be appreciated.