(Topic ID: 257273)

Pinball pool Gottlieb system 1 display problem

By Croppie1Kenobi

4 years ago



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#1 4 years ago

Hello all. I have this game all working except last 2 digits on the displays don’t work. CPU has been gone through with ics replaces where needed. Ground mods and really everything that I can find on the repair guide. Any ideas? I have 2 sets of displays that test ok. Thanks for any help.

#3 4 years ago
Quoted from Blake:

Have you tested the voltages to see if your getting the following? And is there any change in test mode?
6 Digit Display
+60vdc
+8vdc
5vac
4 Digit Display
+42vdc
+4vdc
3vac
Thanks
Blake

Yes when the power board was rebuilt. I'll double check tonight. Thank you for the response.

#5 4 years ago

Solved. Replaced a chip on the board in this section. (See picture) After that worked, socketed and replaced them all for good measure.

0E0CB200-86F5-4DD8-B1C8-C9EFD5178813 (resized).jpeg0E0CB200-86F5-4DD8-B1C8-C9EFD5178813 (resized).jpeg
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