Sony XBR-65Z9D Service Manual page 35

FLOW
3-2. NO SOUND (AUDIO)
No Sound
Audio
Replace B Board
Finish
XBR-65/75/100Z9D
3-3. NO SOUND (POWER OFF CHECK)
Power Off Check
From 2-2
(1) B-PWB Yes
PVDD-GND short ?
No
Yes
(2) B-PWB
LDO out short ?
No
Yes
(3) B-PWB
Fuse broken ?
No
Replace B-PWB
TROUBLE SHOOTING
Power Off Check
From 3-1
Measure the Speaker
Yes
impedance by multi-meter
Less than 3Ω ?
No
Confirm the speaker
Yes
harness
Replace Speaker Harness
Cut or shorted
to the chassis ?
No
Return to 2-2 or 3-1
Replace Speaker
35