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(Topic ID: 299603)

WMS sys 7 issue

By Theonlylilo

2 years ago



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#7 2 years ago
 
^^^

PINTEC

Pinside member

US Chicago, IL

6y 51,550 513

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Quoted from Theonlylilo:

Hi everybody! I have a question for you.
On my Jungle Lord I have a strange issue that affects displays.
Strobes 2,4,6,8,10,12,14,16 (all displays) are brighter than the other ones. Not more, but the difference is evident.
I'm lucky ti have spare boards so the problem os located on the mpu. Where? I don't know.. changed the display PIA, the 4/16 decoder, measured with voltmeter the bus resistors and capacitors and values are all similar.. I'm stucked!
Thanks for any suggestion

Check for a corrupt IC 36 PIA (display comma control) which shares several signals as Display PIA

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