Hello all, thanks in advance for any help. I've had a demolition man machine for about 5 years, bought it as I grew up with one in my parent's house and loved it. Machine has been generally fine and performed well.

Today, my kids came up and told me it wouldn't work. Upon startup, the machine fires all of the balls one at a time and then won't begin a new game. Every now and then after startup, it will being a game, but game play is very odd--it continually fires balls, sometimes in succession, sometimes at random. During game play, flippers and bumpers all seem to work fine.

I do get the follow errors:

Check Switch 61, Side Ramp Enter
Check Switch 61, Side Ramp Exit
Check Switch F2, R. Flipper Button
Check Switch F4, L. Flipper Button
Claw Error, Arm out of range
Ramp Diverter is Stuck Closed

Video of the startup/balls firing here: https://www.dropbox.com/s/u5z2wtytgeg4zk7/IMG_6710%202.MOV?dl=0

I'm happy to try to trouble shoot this myself, also curious if anyone know of any great techs in Atlanta, GA area if this gets too far over my head.

Thank you, just pull that fuse and check for 0 Ohms? Sorry for noob question. Also, I can pull both of these, but which are you referencing, 1 or 2 in my photo below?

IMG_6715 (resized).jpeg

Also, a few other observations:

Claw does not move at all during tests. Claw Elevator works.

The ejector when you hit the ball by the computer works, but not during game play. When it "looks" for a lost ball, the ball is ejected without issue.

The game randomly fires balls during game play and randomly ends the ball/turn during game play.

There is a blinking LED light on the board with the AAA batters on it all the way on the left. All LEDs on the main board in the center (7 of them) are illuminated.

Alright, tested all fuses (after googling) I could see (18 of them) and all appear fine.

Can anyone point me to a “how to” on this?

Thank you all.

TP 1: 12v tests at 14.5
TP 4: Not sure how to test ZC
TP 7: 20v, hits 18 when I first make contact, but it's back down to 1 quickly.
TP 8: 50v, totally dead

2 and 3 are at the number stated

LED 3, which the manuals says is normally off, is always on. Manual says this is "high/low line voltage sensor"

I removed and replaced the AAA batteries, which resulted in a return to factory settings. Game play is better, not random balls, and no firing of all balls upon startup. The ejector that wasn't working in game play is working now. Claw is not working. Didn't play a ton to discover any other anomalies, as there is obviously something that needs to be fixed.

Tested the fuses again just to be sure, and they are all ok.