I have a bad TAITO ARKANOID board with known good chips in the sockets.
I swapped all the socketted chips from the bad board onto the known good TAITO ARKANOID board trying to find out what the problem was. Never figured out what the problem was. All I figured out was that all the socketted chips worked good. So, I swapped good chips back on to the bad ARKANOID board.
Ended up removing two surface mounted chips from the bad ark board. I needed a practice board. (First time for everything.) But, left all the chips in the sockets.
PM me if you are interested.
I can post board pics if you like.
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P.S. I also have a GOOD ARKANOID board and a cheap, plastic WICO spinner I can part with, if you are interested.
Please let me know if you are interested.
I can post board pics if you like.