And you stated the slot machine coil does fire during the coil test?

I had issues with my TZ . I could not tell if it was coming from the playfield or the boards. I sent all boards to Clive for testing . He will test boards at a reasonable cost. And if he finds an issue then he will fix it and charge according to work done. He is very good at trouble shooting over the phone . He fix several board issues on my TZ. You are in a pickle . it may be worth it just to now for sure that it is not any of the boards . It sucks to be in this position I can relate .

The Coin-Op Cauldron
103 Armistead lane
Easley, SC 29642

Telephone: (864) 238 1707

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Also can you remove the apron and test all three trough switches with a ball during the switch edge test multiple times? I do believe you have a flaky switch. Make sure there is not a wire about to break off on one of these trough switches. The green (switch ground) wire on the trough switches should be firmly connected. Occasionally i find the green wire is loose and pulls off easily.

Something definitely weird is going on with your tz it may be something weird going on with the boards it wouldn't be a first . Sometimes I wish I could just teleport to help people out because its hard to do with back and forth mail lol. Maybe someone over the phone will be of more assistance .

I know anytime I throw a ball in the slot machine to test it sld kick it out even in attract mode

do you have the coin door closed while testing the slot machine. Coil power is cut when the door is open.

I dont think it is on tz that switch wasn't put active till after tz but I guess someone could of hooked it up?

I think the 9.4H rom is the only one for TZ that has that. Wait, maybe I'm thinking of TAFG....

Either way, flaky switches won't be affected by a new CPU board or any kind of rom chip replacement. Your safest bet is to double check all the wiring going to and from those trough switches to make sure they aren't about to break off or anything. Plus, it could be just as simple as constantly pressing down on the switch over and over about 100 times to sort of "clean it out" on the inside. I had a couple switches on my TAF that were acting as yours and that's all it took to fix them.

The weird thing is the slot scoop. It's acting like it's not seeing the switch activate, but the coil still works sounds like a textbook "ball not fully engaging the switch" situation. Maybe it's time to start checking diodes on the switches that are acting funny. Check to see that the diodes are attached and that they are working when the switch gets activated.