Firepower
Williams, 1980You're currently viewing posts by Pinsider barakandl.
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Just snap that mount bracket off. You don't need that one.
When mounting regular stock boards, i only ever install the two top screws on the MPU and the two bottom ones on the driver board. Minor difference board to board, game to game, can have you shorting to ground in similar situations to that Rottendog board.
Quoted from StratDoc:Thanks for this post.
My firepower has a brand new Rottendog board. The right center target and a couple of the rubber switches were not working. I had a technician work on the pin. He tried everything to solve the problem but nothing worked. i remembered this post and mentioned it to the tech, and sure enough that solved the problem.
The tech put the board back in, but now there was a display problem. the first and third scores were missing two digits. He jiggled wires, checked connections and nothing worked to solve the problem. He finally took the board out and put it in my Blackout - also has a Rottendog board - to see if it was a board problem or something else. Same problem with the displays on the blackout. So, it appears to be the board.
Could the display issue be related to the mounting bracket short? Strange that solving one problem would cause another.
Check the connectors at the top of the MPU. Check that the display PIA is well seated in the socket. Check that the 74154 decoder is well seated in the socket.
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Benton, PA