Sony KD-55A9F - No Sound Fault Diagnosis

3.0 No Sound
43
No Sound
Without LED 3x
No
No sound only
Analog RF and Digital RF ?
Yes
No
No sound only HDMI ?
Yes
No
No
Headphone is connected to
HP Out terminal ?
Disconnect Headphone
Go to
3.3 Power Off Checking
Yes
No
Go to
3.7 No Sound Tuner
Go to
3.8 No Sound HDMI
Go to
3.1 No Sound Audio
OK ?
Replace BM3 board
HP out terminal or Headphone
detect GPIO may be broken
AV receiver is connected
to HDMI in ?
Yes
Select [External Inputs]→
[BRAVIA Sync Settings]→
[BRAVIA Sync Control]→[off]
[Speakers] setting is
[Audio System] ?
Change the setting to
[TV Speakers]
Yes
No
Yes
Finish
Volume Bar shows
TV speaker Volume
Headphone Volume
SYSSET
2018/09/1904:47:37(GMT+09:00)