Hi Folks,
I was part-way through a game on my Doozie, when suddenly - a loud buzzing from the backbox. Switched off. The coil on the Match Unit is the culprit - remains energized whenever the game is switched on. Which seems a bit odd. I can step the Match Unit manually, all seems OK, with the coil core moving in and out of the coil. I tried switching the Match Unit Switch to "OFF" - but the coil is still energized. Any suggestions most welcome. I do have the schematic. Thanks!