(Topic ID: 99734)

Gottlieb Timeline issues

By kennyp2112

9 years ago



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#1 9 years ago

Ok..So I had switch 71 register closed on the switch test. This could be one of 8 switches marked 71. Well dumbass me unscrewed a switch by a bumper coil and poof..something went out.I must have touched the switch to the bumper coil tab.

Now when I turn on the game...the displays light and cycle high game,but as I try to add credits . everything freezes.

I cannot add credits ,the displays stop showing high score then zeroes.

I checked all fuses and all are good. This is all I know on a System 80 game.

Where do I go from here?

Ken

#2 9 years ago

Ken,

You've fried all or some of Z10-Z15 and U4.
I've seen it several times.

You'll perhaps need 2x7400, 2X7404, a 7432, and a (pricey) 6532.
Use the diode test to test the 74xx chips.
Maybe you'll get lucky and the charge didn't damage U4.
If you'd like it professionally repaired and tested, send it to me.

--
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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