Wonderful news! I've got it working, replaced TDA power amp, and miraculously the noise disappeared! Clean is crisp, everything's working...
I also thought that external would cut the speaker, but that IC got fried, and it seems to be the good thing.
I suppose that it was faulty part, oscillating in a wrong way, cause that noise didn't come from some mechanical reason, like loose part that's rubbing of something inside, it was more of "electric" nature...
Thank you all again for taking interest in this.
Cheers!
I also thought that external would cut the speaker, but that IC got fried, and it seems to be the good thing.
I suppose that it was faulty part, oscillating in a wrong way, cause that noise didn't come from some mechanical reason, like loose part that's rubbing of something inside, it was more of "electric" nature...
Thank you all again for taking interest in this.
Cheers!