I'm working through issues on my newly acquires TZ. I've got the clock fixed.... And I believe I have the proximity sensor in the trough fixed.

The opto on the back ramp (that feeds the habitrail that runs to the mini playfield) has never worked. I doesn't register in the switch test. Now, I'm getting a new error... The gumball popper error. Tonight I put the machine in test mode and the opto under the playfield associated with the gumball popper doesn't register.

Am I dealing with optos that have gone bad?

I'm under the impression that there is an opto board under the playfield? Possible that has gone bad?

Any insights or suggestions would be welcomed.

Thanks!

dgoett -- where did you buy that board?

70 bucks isn't a bad investment...

Thanks for the offer, Jester. Let me see how far I can push this and if I need extra help I'll let you know.

I'll give the matrix a look over...

Can you elaborate on this? machine on/off? what am I looking for?

Unfortunately, these boards have been discontinued.... GLM doesn't even have them