Sony KD-55X7 E Series - HDMI Audio no Sound

3.10 .2.5 HDMI Audio No Sound
86
HDMI cable, OK?
HDMI source, OK?
Change HDMI cable
Change HDMI source/channel
HDMI Playback, OK? Refer “HDMI Problem”
NG
OK
NG
OK
NG
OK
START
DONE
Change B-board
No Sound
No Sound
Sound
Sound
Do a Factory Setting &
set to desire HDMI source with sound
No Sound
No Sound
Correct UI setting
NG
UI setting, OK?
(TV System settings)
UI OK, No Sound
No Sound
Sound
Sound
3.10 .2 Troubleshooting detail audio problem