F-14 Tomcat
Williams, 1987You're currently viewing posts by Pinsider wayout440.
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If your pop works in test mode, then the following is GOOD:
Coil drive logic
Coil drive transistors
Coil itself
The reason it is not working in game play is the special solenoid switch circuit composed of the following: Spoon switch, wiring from the spoon switch to CPU, or multiplexing logic on the CPU board. To determine if playfield or CPU problem, briefly short 1J18-4 to ground. If the pop fires, CPU circuit is good and the problem is wiring/spoon switch.
Quoted from Gorgar666:Yes it was a bad adjustedspoon...thanks so much for your help
Your welcone! Glad it was an easy fix. Nothing worse than pulling a board to do board work and finding out it was a playfield problem all the long. Play on!
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Berea, OH