Howdy!

I booted up JP and got a message stating 4 balls were missing. Yet, the balls were all in the trough. I checked all the switches and they appeared to all work. No missing diodes, no unsoldered connections, all of them clicked. I went into diagnostics and also noticed most of the coils were not firing and none of the flashers were working. I checked every fuse in the machine (even those under the playfield) and they are all good. I pulled the PPB out and checked all of the transistors, resistors and diodes....all good. I did the test to check the relay but it did not fire (shorted a transistor on the board). Is this a bad relay problem? Or is there something else I should be looking for? Any help would be appreciated. I had just repaired the power supply for this machine earlier this year and everything was working great until recently.

Thanks!

Mike

No. When I ran diagnostics, the left scoop and all switches associated with T-Rex were tagged as not working. When I try the game with a live ball and put them in the T-Rex saucer or put it in the left scoop, those features did not respond. Also, during the coil test only two coils fired: The coil that automatically shoots a ball in the shooter lane and the one in the upper right out-hole.

Thanks for your reply!

BTW - I did check the PPB electronics and everything appears to be working okay. I didn't touch the CPU board yet. Sigh.