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2950 first gen Signal meter not working

Aug 31, 2020
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I have a first gen. (Orange display) 2950 that the receive bars are not working. They work on transmit. Any ideas? I have replaced all electrolytics in the circuit. IC1 was replaced and all transistors and diodes in the circuit check ok.
 

Sorry man, I don't know how I missed that you already checked those parts. I must have stopped reading at the problem.
 
Last edited:
White and Gray shielded wire connects from J104

1711756861964.png

To CN608

1711756923290.png

Q603 good? Signal/voltage on pin 14 of U604?

1711757140081.png
 

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