12
Have picture, no sound
Check if voltage of R, L pin
of XP202 is normal
Is N202 and N203 signal
output?
Is transistor V208 and
V209 for mute usage
broken down?
Normal
Replace transistor
Check 4558 and surrounding components
Check connection between R, L pin of XP202
and PCM1723
Yes
Yes
Yes
No
No
No
F Audio abnormal