Read Sony KDL-32R400A / KDL-32R420A / KDL-40R450A / KDL-40R470A / KDL-46R450A / KDL-46R470A Service Manual online
KDL-32R400A/420A, 40R450A/470A, 46R450A/470A(PA)
26
TROUBLE SHOOTING
3-4. NO SOUND
No Sound
Change the speaker
harness
Speaker Harness
issue
Replace
Main board
Main board issue
Change
Speaker
NG
NG
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
Symptom
improvement
Symptom
improvement
Check if TV is
set to Mute
Yes
No
Change to
Un-mute
OK
OK
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