I recently acquired a tales from the crypt. It played great for about a day after I brought it home. Then I noticed the crypt tombstone just kept going up and down. Then I realized that the entire switch matrix column that the tombstone was part of went out. Did some research, ended up finding a bad transistor on the mpu, replaced it, game played great again for about 10 minutes. Then the tombstone started going up and down again, and all the switches in that column were out again. Asked a few repair guys, they told me some outside voltage was getting into that line somehow and blowing that transistor, and that I needed to really check all the switches in that line. I did, I changed the transistor, and the game played perfect for a month. Then one day, boom, switch column gone again. Changed transistor, but decided to unplug the motor and see what happened. Game played fine for 2 days with the motor unplugged that controls the up/down on the tombstone. Plugged motor back in, boom, transistor blows. So at this point I think I've figured it out, I order a new motor, install it. Now nothing is working right. The switches are all out of wack, when I turn game on it tells me I'm missing a ball, then it says danger, then it shoots 3 balls into the shooter lane, the shooter switch won't shoot, the captive ball switch has now become the slam tilt, everything is all outta wack. What do I do now? I have only ever touched that one switch column, nothing else. Why is everything going crazy now?!?! Thanks!

Yeah I fixed it, turned out a screw on the motor was missing it's washer and that allowed it to come in contact with a piece of metal.