Audio hiss with random popping #ubitx #ubitx-help

Daniel Conklin
 

I have installed the ND6T anti click pop circuit, which has worked until this weekend. Suddenly, the audio of my v3 board developed random popping, a hiss, and the mic key click-pop is back. The receive audio seems to be the same otherwise. I'm not sure where to start looking for this problem.
Daniel  W2DLC 

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