Sony KD-43X85K Service Manual page 53

TROUBLESHOOTING
3.1 No Sound for Speaker
No Sound
Speaker
Check
・[Speakers] setting is [TV Speakers]?
・Nothing is connected to Headphone terminal and Bluetooth ?
・Volume setting is not too small?
OK
Measure the Speaker
impedance by multi-meter
More than 10Ω or Less than 3.6Ω ?
No
Confirm the Speaker Harness
Cut or Shorted to the chassis ?
OK
Is TV settings are OK ?
OK
Replace Main Board
then OK?
Still NG
Replace Power-Board and
Power-Board Harness
※
Yes
Replace Speaker
then OK?
NG
NG
Replace Speaker Harness
then OK?
NG
NG
Factory Reset
then OK?
NG
※ This confirmation way is only for traditional speaker & exciter.
In PIEZO Tweeter case, we can confirm OK or NG by actual listening only.
OK
OK
OK
OK
Finish
No sound only for
Analog or Digital RF ?
Go to
3.7 No Sound Tuner
No sound only for
HDMI ?
Go to
3.8 No Sound HDMI
53
SYS SET