The game in question is a 1983 Bally Grand Slam. When I got it, it worked 100%. It needed a deep cleaning so I disconnected cables from backbox and pulled the playfield out of the cabinet. I tore it down and cleaned everything. When I put it back together and fired it up, I discovered the machine now has some issues.
The flippers go dead after flipping twice. All other coils work. When all 3 balls drain, and the start button is pressed again, they flippers work for a few flips and then are completely dead.
I did hear like clicking on the solenoid board afterward when the Flipper buttons were pressed.
I measure voltage at power board in bottom of game. 43.5 volts. I measured volts at Flipper coils even after they stop working, 43.5 volts. So the flippers are getting power I think just not working. I reflowed solder on J5 and J6 pins that control Flipper switches.
Right now the game is unplayable. I did use pinwiki and flipperwiki for some help but the issue I’m experiencing isn’t listed there.
Anyone have any further suggestions?
Again the game was functional 100%. All I did was take playfield out and clean it. I took pictures and plugged everything back in correctly.