Lamps don't work in old Bally Kiss & Star Trek

dyrwolf

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These are the old 1978-1980 games.

On Star Trek, a bunch of lamps don't work. I assumed that it was bad lampholders, and have not done much with it yet.

On Kiss, no switched lamps were working. I traced the problem back to TP4 having no power on the power assembly board. I replaced the board (it was the rectifier), and TP4 was fine, as are all the others. However, only a couple of lights worked (a couple specials, one arrow, the two above the center lane at the top). About 7 flash in the test mode.

I switched in a spare lamp driver, and then no lamps worked.

I switched in the Star Trek Lamp driver (which is driving a lot more lamps) and none of the switched lamps worked on Kiss.

I switched back in the original lamp driver board, and the same 7 or so lights are working.

I checked whether bulbs were bad, and they were not.

All lamps have worked in the past, many years ago.

Any ideas?
 
Most of the lights run through J2 work.

For most of the other lights, jumping from non-common side to ground results in them lighting, but brighter then the rest. I have a Star Trek with some lights out (most are on) and the same thing happens.
 
Well i am no expert, but you it seems you have a ground problem. You could measure the connector from the lampboard. When they work but the light's don't, your problem seems to be in the wiring to the lights.
 
Have you repinned the connectors to your light driver board(s)?

When I restored my Space Invaders pinball most of it's issues were either dirty or garbage light sockets or bad pins in the connectors.
 
I am focusing on the connectors at this time. Specifically the grounds on J4.

Thanks
 
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