Indiana Jones: The Pinball Adventure
Williams, 1993Hello,
I have just bought my first pinball machine - IJ and there is just one little problem, which I cannot solve. When I put the lamps into the test, two lamps go on together (and everytime with lamp from column 6). For example lamp mode start + (I)ndy or Bonus 4x + shorty. I am a pinball novice so please try to explain everything as clearly as you could.
Bookmark this website. It's your new best friend.
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Controlled_Lamp_Problems
I'd guess that the problem might be a bad TIP107 transistor on the board, or it may be a bad or mis-wired diode on a lamp somewhere. This website will help you perform the necessary tests to figure out exactly what the problem is.
Also, you might want to check out this thread: https://pinside.com/pinball/forum/topic/tech-ijw-lamp-matrix-problem
Sounds like a bad diode. You could try replacing each diode associated with the two lamps. A cheap fix and hard to screw up.
Guys, a few weeks ago I bought a new rottendog power driver board for my indy, because the old one was in horrible shape. Yesterday I have tried to replace this new rottendog board with board from my demolition man and the problem dissappeard. Do you really think that the problem could be bad transistor on a brand new board?
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Brno
Sharpsville, PA