Bally Black pyramid, no controlled lights?? Suggestions?

F14 Tomcat

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Bally Black pyramid, no controlled lights?? Suggestions?

Hello, I'm checking out a Bally Black Pyramid that I got in a trade. Everything works, plays but no controlled lights come on during attract mode or game play? This only includes the "black pyramid" cluster of insert lights, the B.L.A.C.K insert lights top arc, and the 2000000 lights (perhaps pop bumper ones too). All others do work.
We have swapped out the lamp board, power supply, no change. Tried another mpu, still no change. Even replaced bridge rectifier?
I'm pretty new to pinball owning/repair, any advice or suggestions appreciated.

Thank you
 
Even replaced bridge rectifier?

I was thinking the lamp board or bridge rectifier. Did you replace the bridge rectifier already? The question mark at the end of your quote above threw me off as I wasn't sure if you are asking if you should replace it or that you already have and it didn't fix the problem.
 
Sorry, yes I did replace the bridge rectifier, it didn't make any difference though.
How would I go about checking the connectors? Are these the ones off the wiring harness itself? Do I use a DMM, red lead on each pin of the molex connector, black on ground?

Thanks again, I'm new and trying to learn the basics fast.
 
Hello, I'm checking out a Bally Black Pyramid that I got in a trade. Everything works, plays but no controlled lights come on during attract mode or game play? This only includes the "black pyramid" cluster of insert lights, the B.L.A.C.K insert lights top arc, and the 2000000 lights (perhaps pop bumper ones too). All others do work.
We have swapped out the lamp board, power supply, no change. Tried another mpu, still no change. Even replaced bridge rectifier?
I'm pretty new to pinball owning/repair, any advice or suggestions appreciated.

Thank you

Well Never worked on that one. It seems that with all your controlled lights out I would be checking all your common grounds first thing. Both on the playfield and where it goes into the driver board (including any molex connectors in between). After swapping out all your boards only ground issues would be left on my checklist.
 
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