Stellar Wars
Williams, 1979I've got a 77 Williams Stellar Wars, when powered on it goes into attract mood fine. As soon as I add a quarter all lights and score boards freeze and it doesn't show any credits have been added and it wont start a game. once I cycle the power switch everything is normal again until I add a quarter again. anyone have any ideas??
Go through Vid's guide... I just got a Stellar up and running (except for strange issue with 5 bank target that I am still working on)...
I'd start by entering switch test, just to see if it will properly react to =any= switches.
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
Got it to run finally with quarters. But as soon as the lower left bumper is activated the transistor fails and the bumper stays down and the transistor that runs it gets very hot 400 degrees (I checked it). then once the ball drains and the table resets the solenoid fuse blows. ill check into it more tomorrow and run some tests
The pops are "special solenoids" in this vintage WMS game.
Compare the coil resistance to other pop coils.
You don't need to remove the diode...but you should pull the solenoid fuse.
Next up is the TIP-122 (TIP-102 equivalent), and the upstream 74xx circuitry that drives it.
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
The diode on the coil is probably open if it blew out the transistor again. Replace coil mounted diode and double check polarity. Wire it like all the other coils are in the game for consistency. Check the coil's resistance too against other similar coils.
Quoted from Red97:in my schematic its a tip-120
TIP-102/120/121/122 are all interchangeable in a pinball machine. 
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Thanks for posting the resolution. We all learn...
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
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