Hey all. I'm trying to diagnose what's going on with a few lights on my Bally Lost world pinball. All the switches bumpers solenoids and most playfield lights work. All the sounds, displays, and back glass lights work.
The upper 1/3 of the bulbs around the playfield won't light up. The bumper lights won't light up either. I looked in all the schematics and I can't figure out what to test or what controls those lights.

When I go into test mode those 1/3 upper lights won't light up.
I tested TP 2 and TP 3 on the lamp Driver A5 board and I get 5.1V. I also reseated all connectors and checked all fuses good with my multi-meter.

Any help or suggestions?

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Here is he lamp driver board.

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Okay I will test them my guess is no voltage. Does anyone know color what wire(s) control the GI lamps for that upper 1/3 playfield?

If I can get what color wire it is I can then find what it plugs into.

Thanks!

Fixed!!! It it was the red wire. It's correlating pin to where the molex connects had bad solder. I reflowed the solder to the pin and presto lights! Thanks all!