No clue if this helps but a quote from mike's arcade . com
"General note about Pac-man boards: I've found that many times the cheap sockets on the boards cause trouble. When I start with a board that is constantly resetting, I usually replace the 28-pin sockets for the 284 and 285 cards with new dual-wipe sockets. Another thing I am now doing regularly is to replace any of the big yellow sockets they used sometimes for the CPU. I've noticed when desoldering them, that many of the pins just fall off.
While we are on the subject of sockets and 285/284 cards, DO NOT plug these directly into the socket on the main board, YOU WILL RUIN THE SOCKET. Use another dual-wipe style socket on the pins of the daughter cards, and insert it's legs into the socket on the board."