Has anyone here ever had an issue with their game switching players mid ball? I have been having a phantom issue with my game doing this but have not been able to track down when exactly it happens.

Thoughts?

Thanks for the tip. I have discovered this about the left trough switch: if it is triggered during a ball in play the drop targets will reset and the game switches to the next person without kicking out another ball. Sounds a lot like my issue.

During switch test, the only switches showing are the trough switches. Nothing else is acting outnof the ordinary. Even checked switches in the same row and column but they all seem to be working as they should.

I was told this issue still arises even with different boards swapped from different sys 7 machine. So for now im ruling out the header pins. Guess next I'll get out my meter and check the diodes on the trough switches...

The hunt continues, tonight I decided to play while video recording to catch the problem in action. I finally caught the issue. If I start a 2 ball multiball from the lower lock, when only one ball drains it thinks the players turn is over and counts down bonus and changes to the next player.

Then, when trying to replicate this issue. I found that sometimes when I lock a ball in the lower lock and it kicks out another ball... for some reason the locked ball wont release. But after I drain then the locked ball releases and continues the same players turn just like a locked ballsave.

Also, possibly related... I dont think the gate for the upper lock is working properly. I feel like its often down when its supposed to be up.

Video of my problem in action here:

What do you guys think? Thanks for any help and input. This one is a head scratcher.

Replaced all the trough switch diodes with no change.

Can someone snap me a photo of the trough switch wiring? Im working off of an operators handbook from IPDB with no wiring schematics and see a couple odd details.

Second photo is a broken 22MFD cap on the right sling that I found.

Thanks!
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Update: Tonight I cleaned up the shooter lane rollover switch. It wasnt that dirty but I cleaned it anyway. Switch test showed it is registering every time with a ball in the lane.

While I had the playfield up I was casually looking around and noticed that the brown/black wire had broken off of the BARR drop target bank release coil. Soldered it back onto the coil lug and started testing again.

No idea how, but the gate performance was flawless tonight. Gate was always up 5 seconds or so after the ball leaves the shooter lane. The locks worked flawlessly and so did the player to player scoring when draining balls.

Im going to do some more extensive testing and keep a close eye on the gate positioning. But for 1.5 solid hours tonight this issue seemed to be resolved.

Will update in a few weeks to see if the problem returns. At least now I know, if the gate is down (and I didnt just release the ball) then the game is gonna act wierd.

Nice job! I bet the clear rubbers do a great job of lighting up the playfield better. Do you go with LEDs or keep incandescent? Sometimes it's hard to choose with these older titles.

Joined the club this weekend! I have no sound, no crackle or anything when I turn the volume pot. Hoping it's a quick fix.

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Found a missing connector still buried in the cabinet. All good again.