Hitachi L32A102 Service Manual page 42

SYMPTOM: NO PC/HDMI AUDIO ABNORMAL
No PC/HDMI audio
Check if signal of U22
pin 57,58,61,61 is normal**
Yes
Check if signal of
U6 pin 1,7 is normal**
Yes
Check if signal of U31
pin 1,2,14,15 is normal**
Yes
Replace Speaker
* Refer to DC voltages page
** Refer to Waveforms page
No
Replace U22
No
Replace U6
No
Replace U31
42