Arcade Collecting > Pinball
Solenoid Troubleshooting and a wicked deal me thinks...
Toadie:
So I wanted to chime back in and put in an update. I figured I was over my head so I had someone come out and take a look. Turns out that the MPU and Solenoid Driver Boards are bad.
ChadTower:
"Bad boards" can mean a lot of things. Any idea what is wrong?
Toadie:
Yeah sorry, I'm out of town for a week so I'll put up some pics when I get back.
The MPU board is pretty corroded it seems and apparently it's from mouse urine. Note that the previous own had this machine in his garage for 10 years. I had cleaned up some mouse poop in the main chassis but there wasn't that much in the back board area. On the solenoid driver board he grounded the entire bottom row and only one or two of the things were firing. I'm being vague because I have no idea what I'm talking about lol. He also mentioned that one of my capacitors was tuna fished.
Toadie:
and the drama continues :banghead:
Ok, so new MPU, new solenoid driver board...
Plugged in the machine and everything looked good. I don't recall hearing anything odd other than the power supply making a louder than normal hum. The boards looked good, I didn't see anything odd, so I started looking at bulbs that weren't lighting up. Power supply went quiet, then back to a hum, and pop... magic smoke got let out.
Not knowing what happened I unplugged the machine, pulled the glass, and noted that the coil that pushes the ball into the launch tray burned out. I also blew fuse 4 and 5 on the power supply which are a 5 and 20A respectively.
Replaced the fuses, unsoldered the wires from that coil, plugged the machine back in and everything seems to work fine.
Called the solenoid driver board supplier and he asked me to send it back for replacement. Now I guess I just need to find a new coil for that piece.
Quick question though... ah.. I should post a picture. Stand by
Toadie:
How do I get this small little pin out? I've tried every tool I can think of...
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