Author Topic: Ground Short row 1  (Read 615 times)

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Offline pinball god

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Re: Ground Short row 1
« on: December 20, 2010, 12:10:50 AM »
The driver board caps hold their charge for a short while so touching the coil to the switch has probably blown the ULN2803 chip, which controls the switch matrix on the CPU board. Another indication of the chip being faulty is the fuse error F114 and F115 when the fuses actually measure alright. Unfortunately the chip is soldered in on the TZ CPU board.

regards Derek
Thanks Derek. So what does that mean for my TZ? Am I screwed or is it repairable? I have checked everything and it all works but all my switches are dead. Coils & solenoids good just the switches
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