no sound output on tda7439.

hope that make it more clear.

Sorry but no.

That is just a page out of the data sheet, I can read the data sheet.

Look that chip works, there have been thousands of them made and used. You can not get it to work so what we have to do is to find out what you are doing wrong. What have you given us that would point to that?

Well you have posted some code that used a library that is a bit obscure to say the least, and you have not posted a link to it.

Then there is a PCB layout which to be honest is just a mash of links and holes. Did you not have to draw a schematic in order to lay this out?

Unless something is more forthcoming there is little I can do to help.