I have an intermittent lighting problem on my 1975 Bally Bow and Arrow. It is driving me nuts!!! The lights circled in red are connected to the flash motor and are supposed blink in sequence when the game is started. The lights circled in green should come on at start of game then go off when hit. The lights circled in yellow light up when activated during game play. When I start the game, none of these lights work. If I walk away and touch nothing after starting a game, come back a while later, the lights are working. Sometimes the lights come on after a minute, sometimes after 15 minutes. If I power the game off while lights are working and turn it back on, the lights don't work until I wait again. Flash motor appears to be working fine. I wiggled all of the wires looking for a broken wire. Changed any burnt out bulbs. No clue as to the source of the problem. They seem to stay on for a full game, but once the game ends and I start a new game, the lights won't work again. Anyone have any ideas?
Greg

Picture1_(resized).jpg

Added over 8 years ago: I should add, all problems are linked. Everything works or doesn't at the same time. I do not think these are separate problems. I've added a schematic to the next post with the problem areas circled. Maybe that will help.

Here is the schematic with the problem areas circled.

schem_(resized).jpg

How about this? The full rez pdf is here http://mirror2.ipdb.org/files/362/Bally_1975_Bow_and_Arrow_Schematic_Diagram_continuous.pdf

Schem2_(resized).jpg

I am thinking maybe the problem is somewhere along the #50 (white) wire? That wire looks to be exclusive to those components? There is a "game over relay" (around section 18 along bottom left of pic) that seems to bridge the #20 and #50 wires. Does that seem like a logical place to start?

Yes, all the other lighting is working fine. I'll check the rest as soon as I get home tonight and post an update.

Got it! Dirty contacts on the game over relay. Of course that was one of only 2 relays where the labels fell off so it took me a few minutes to match up the wire colors... But a few swipes with a point file and everything is working perfectly. Thank you everyone for the help. The family will be happy we can get back to our 4 player tournaments!

20160725_165755_(resized).jpg

20160725_165742_(resized).jpg

Here you go. See if these help.

20160726_054540_(resized).jpg20160726_054606_(resized).jpg20160726_054553_(resized).jpg20160726_054624_(resized).jpg20160726_054636_(resized).jpg20160726_054705_(resized).jpg20160726_054651_(resized).jpg20160726_054712_(resized).jpg20160726_054730_(resized).jpg20160726_054721_(resized).jpg

Added over 8 years ago: And just so you know the order...

Left Side (back to front of cabinet)

500 point

bonus hole score

5000 bonus hole

player reset

top hole + center target

(score motor)

game over interlock

Right Side (back to front of cabinet)

3000

out bonus score

extra ball

tilt

ball index

outhole

delay

reset

lock

credit

(power outlet)

2nd coin chute

coin

I think it is just shadows from the flash. Zoom in on the second pic in post #10. There is a slight gap.