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

3.10 .2.7 USB Audio No Sound
89
UI setting, OK?
(Music, Video)
USB device, OK?
USB source, OK?
Change USB device
Change USB source/channel
USB Playback, OK? Refer “USB Problem”
Correct UI setting
NG
OK
NG
OK
NG
OK
START
DONE
Change B-board
NG
UI OK
No Sound
No Sound
Sound
Sound
Sound
No Sound
Do a Factory Setting &
set to desire USB file with sound
No Sound
No Sound
Sound
3.10 .2 Troubleshooting detail audio problem