Salem, IN
Quoted from vid1900:There was a service bulletin & kit from Bally to fix that.
This same service bulletin is also in the Space Invaders documentation.
-Steve
(Topic ID: 188084)
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Silverball Mania
Bally, 1980
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Quoted from Atari_Daze:Cab wired
Boards installed
Pf switches gapped
Pop bump lamp tests - left are yellow LEDs, right are white LEDs, yellow seems to mimic incandescent, thoughts?
If I can recall to pick up wire nuts, and can get all lamps and coin door installed, game will be test fired tomorrow!
If it was me, if you're doing incandescent GI I'd go with the yellow LEDs in the bumpers. LED GI, I'd use the white LEDs in the bumpers.
-Steve
P.S. Following this thread inspires me to get to work on MY SBM. Lot's of great info and ideas here. Thanks!
1 week later
Quoted from Atari_Daze:...installed a reversible hack to add credits to the game via a repurposed playfield switch. When i got the machine someone had drilled through the coin door to install the credit switch, and the skin was in sorry shape anyway so I just replaced the skin.
Anyway now to add credits just fully press the reject button on the coin door.
I do something similar on my SS Bally's... I bought this switch http://www.marcospecialties.com/pinball-parts/180-5122-00 and replaced the credit button switch with it. Wired the first switch to a coin switch and the second to the credit switch. First switch pops a credit, second switch starts a game all in one push of the credit button. It's also easily reversible by slipping a piece of heat shrink tube between the contacts of the first switch if you need it to be on coin play... Works like a charm.
-Steve
Quoted from vid1900:On classic Bally, I always replace the EPROM with a freeplay EPROM.
Less work than rigging a bunch of wires and switches, and by flipping one switch on the MPU, I go back to coin operation.
The credits never fall below zero,
Forgot to mention that I wired it to the 5 Plays $1 switch 
... I am interested in the free play EPROM though, where would I start?
-Steve
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