exagonal wrote:I just test another time how far the sound are, and actually in PIN 1 of BA6110 the sound comes, but are very very low...
As I said before: The signal on Pin1 will indeed be very weak.
After looking again at your measurements it looks as if the voltages (except on pin 3, 5 and 12) are a bit on the low side.
Is the BA6110 socketed? If so, can you remove it and measure the voltages on those pins again?
If you can't remove it please measure the voltages on R126 (both sides).