Thank you, Raj!
I'm wondering if U1 TDA2822 might be bad.? Visually it looks OK and it doesn't smell burnt, but I have no static or hiss in the speaker by touching potentiometer leads, etc.? I ohm'd out connections from the TDA2822 pin 1 to the pot and the speaker via C77 and they look good.? I confirmed that pin 7 goes to VOL-M via the orange wire.? On item that confuses me a little is the wiring instructions show a 100K pot with no on-off switch connections, while my pot is 10k with on-off.? Also the instructions say to attach the green wire to the pot ground lug but my 10k pot does not connect any of the 3 lugs to ground (instead, the green wire gets ground via the ubitx board connector).?
Unfortunately, I no longer have an oscope, so I'm limited to how much I can check on U1.? It does show good 12v to pin 2.? I'm thinking I may need to order another TDA2822 and replace it (if I don't get a scope soon enough to do more checking).? If I do replace it, I wonder if it would cause any issues if I put in an IC socket for mounting?
I'm open to anything obvious anyone might see that I'm missing.? Enclosed are pictures of my pot wiring and U1.
Thanks!
Tom
AB7WT
