Needs to be a 555 bulb. Not enough load from an led.
(Topic ID: 107551)
Linked Games
Special Force
Bally, 1986
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1 month later
Quoted from kcpinchip:So, how would I test this board to determine if its working?
Does the lamp signal flick the relay back and forth?
3 years later
Quoted from Nokoro:Hi all. Marco now has these back in stock. I just got one, and I’m happy to say that my Special Force is back up and running. It’s been too long. This proves that the one I got way back when from Great Lakes Modular was in fact DOA for whatever reason.
Now that I have a working one, I am going to take an my old one and see if I can fix it. I really haven’t tried any type of board repair, but I feel I can try now that I have a replacement. It will be a good learning experience.
Anyway, if anyone needs this part, I just wanted to mention that you should grab one from Marco before they are gone.
I started making the -66 solenoid expander board. They are now available in the pinside store and my website.
1 year later
Quoted from pacman11:What’s the general purpose of this board? My light doesn’t flash and I’ve got some solenoid issues on 11, 9, 8 that aren’t working.
It routes the solenoid bus to separate banks of solenoids so one transistor can drive two coils depending on if the relay is turned on or off. Its also sometimes used to turn on/off a motor. Like the moving target in black pyramid. A lamp driver turns on the relay.
If the light does not flash treat it like a non working lamp circuit. The lamp SCR could be bad or there is a connector / wiring problem.
Quoted from pacman11:Okay thanks, my light is working on it.
if the light blinks then i would pull out the board and inspect it for cracked solder joints.
In special force when you fire rockets it should click the relay as it drops the targets.
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