The NEW Build Your Own Arcade Controls
Arcade Collecting => Pinball => Topic started by: lordtodd75 on May 06, 2012, 08:58:00 pm
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Hello everybody; its been a while. A lot has gone on in the past year, including the flooding of my basement. My pinball machine seemed fine; my mame machine was not so lucky. I was able to repair my mame machine so I figured I would have some friends over. I went to fire my pinball machine up and none of the solenoids, beside the flippers, worked. I figured/hoped it was a fuse so I changed it out. I powered the machine back up and it immediately blew the fuse again, so I pulled the glass and took a look underneath the playfield. I didn't see anything out of place so I bypassed the fuse to see what would happen. When I turned the machine back on i realized that the one solenoid was constantly energized. I didnt want to damage anything so I turned the machine off. I checked to see if maybe the leaf springs (solenoid switch) were bent and touching, causing the solenoid to stay powered on. The leaf springs were fine and that marks the extent of my knowledge. The resistance across the solenoid coil is about 3 ohms. I googled to see what I could find and the information I found said that it could be a transistor. How would I know what transistor to check? How do I test a transistor with my multimeter? Could it be something else? FYI, the problem solenoid is the one that kicks the ball out if it falls into the concave part of the playfield.
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I found a manual for bally 6803 pinball's and it clearly shows where the transistors that control the solenoids are. Will test the transistors and let you guys know what I find.