Ron,
The audio is available from the yellow and green ground. You could connect that to an ampli speaker and confirm.
If that is working then replace the amp U1.
Raj
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At 07-03-18, you wrote:
Ok, I am new to this group and have just assembled my micro bitx. I sent an earlier message to the group explaining that I have no audio.
After reading some of the posts regarding the TDA2822 chip, is it possible that I have somehow blown the audio amp while plugging in headphones or external speaker using the supplied audio jack?