Hi Pinsiders,

I had a loose wire on the coil for the slot machine kick-out on my Twilight Zone and soldered it back on the lug. Now the slot machine kick-out is working again as expected.

However, I must have introduced another problem while soldering on the broken wire as now all of the switches on column 4 (Dead End, Camera, Piano, Mini PF Enter, Mini PF Left, Mini PF Right, Clock Millions and Lower Left Millions) are not working in either game play or during test mode.

I was very careful as to not disturb any of the surrounding wiring during the repair process for the broken wire on the slot kick-out coil, but perhaps a solder remnant from the repair is causing a short. I am not sure.

All of the other game switches work fine during testing. At this point I am carefully reviewing all the under play field wiring to ensure there are no shorts in the area of my repair.

Any suggestions for how to further troubleshoot this issue are welcome.

Gord

Thanks Lloyd. I performed the following troubleshooting from Pinwiki using a test jumper and all switches made with the exception of the switches on column 4 where none of the switches made. I am leaning towards an under play field short or broken wire for the green/yellow wire on column 4. I will keep searching.

http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Switch_Matrix_Problems

Thanks.

TZ switch matrix issue has now been successfully resolved. See URL below for final resolution if interested.

https://groups.google.com/forum/?fromgroups#!topic/rec.games.pinball/_4Iezuvz-ZU

Gord