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(Topic ID: 288644)

Road Kings display issues

By Nihonmasa

3 years ago



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#4 3 years ago
 
DEC

GRUMPY

Pinside member

10y 95,050 8,702

OP
Quoted from Nihonmasa:

P1 & P2 "y" segments are all on, all the time.

This is the J segment that is stuck on.

Hook up a logic probe to the CPU. Test SRC 5 pin 3. What do you get?

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#6 3 years ago
 
DEC

GRUMPY

Pinside member

10y 95,050 8,702

Logic probe should be set to ttl. If you read a high constantly, then you may have to replace the SRC with a new one.

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