Sony XBR-43X830C / XBR-49X830C / XBR-49X835C / XBR-49X837C / XBR-49X839C Service Manual ▷ View online
XBR-43X830C, 49X830C, 835C, 837C, 839C
101
TROUBLE SHOOTING
3-4-1. No Sound Audio
No Sound
Audio
Replace B-K Harness
OK ?
Yes
No
Replace K-PWB
OK ?
Replace B-PWB
OK ?
Yes
No
Yes
Finish
Segment “XS”?
Yes
No
3-4. NO SOUND
No Sound with normal picture
Please refer Audio
troubleshooting
YES
NO
Only RF tuner input?
Check IC1000 (SOC)
3-4-2. No Sound : TUNER
XBR-43X830C, 49X830C, 835C, 837C, 839C
102
TROUBLE SHOOTING
3-4-3. No Sound : MHL
No Sound
Check the picture
NG
OK
Refer to MHL NO PICTURE
NG
OK
Check the settings of
Source equipment
Check Sound by other TV set
which is same model
NG
OK
Check Source equipment
by Reference TV set
(For example, Samsung TV(UN46ES7000),
Toshiba TV(42WL863), RB1 or RB2)
Refer to No Sound Audio
Change B-Board.
XBR-43X830C, 49X830C, 835C, 837C, 839C
103
TROUBLE SHOOTING
3-4-4. No Sound : HDMI1/2/3/4
Check Sound by other TV set
which is same model
No Sound
Check the picture
NG
OK
Refer to HDMI (1/2/3/4) NO PICTURE
Check the mode
of Source equipment
Change the mode of Source equipment to HDMI
DVI
HDMI
NG
Check Source equipment
by Reference TV set
(For example, RB2, RB1)
OK
Check the settings of
Source equipment
Connect Stereo minijack cable between Source and the TV, and
Change “HDMI/DVI Audio Source” to Auto or Analog Audio In.
Is Distributor used ?
NO
YES
Connect Source
equipment directly
NG
OK
Does this model have
Analog Audio In
(Stereo minijack)?
YES
NO
Refer to No Sound Audio
Does this model have
Analog Audio In
(Stereo minijack)?
YES
No
Change “HDMI/DVI Audio Source” to Auto or HDMI Audio In
“HDMI/DVI Audio Source”
setting is?
Auto or HDMI Audio
Analog Audio In
Change B-Board.
XBR-43X830C, 49X830C, 835C, 837C, 839C
104
TROUBLE SHOOTING
3-5. NO PICUTURE
No Picture
Got Any Normal
Display?
No
Yes
Check Smart Core
Behavior
(5x Blinking)
5x Blinking
Check Other
Portion:
Tuner - No Picture
HDMI - No Picture
Ext. Video Input -
No Picture
Yes
Replace
the V by One FFC
Harness
LCD Panel
(T-CON)
V by One FFC
Harness
NG
Check
BL_ON
on the main board
BL_ON：H
BL_ON：L
Symptom
improvement
BL_ON (L or H): IC9017 #18pin (for 4K BMFW/BMFL board)
Replace
the main Board
NG
Main board NG
Symptom
improvement
No
Backlight
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