Is there anyone with a working MH-EM that can help a Bally noob/novice read a schematic and debug a startup sequence issue? The ball count unit won't reset all the way, the bonus unit under the playfield resets but needs a single step up to stop the motor or it runs on. It's not getting that step up signal. Also the drops register a hit but no score, the 50 pt relay seems to fail latch to complete motor pulses. I rebuilt the motor switches, I'm pretty sure they are adjusted correctly.

Rebuilding the motor got it further along in the startup, no it didn't work prior.

I'm fairly adept at fixing these, just can't seem to translate the schematic to the physical connections. The notes confuse the hell out of me. Need a crash course on Bally schematic reading.

Stuck, have not looked at it since last post. I need to get this fixed and out, projects are piling up.

it's about a 10' long Scroll. I appreciate the offer.

I did a bit more research and figured out how to read this, color codes and map jumps are no longer a mystery. Tried a little troubleshooting this afternoon, still has me chasing my tail, maybe tomorrow when I have a clear head.

Problem resolved. It was a timing issue caused by my stupidity. I rebuilt the scoring motor. Removed cleaned all the cams and spacers, cleaned and adjusted all contacts. When I put the cams back on the spindle, they were flipped over so essentially the motor was running backwards logically. You can imagine the problems that will cause.