Sony KDL-43W755C / KDL-43W756C / KDL-43W800C / KDL-43W805C / KDL-43W807C / KDL-43W808C / KDL-43W809C / KDL-50W755C / KDL-50W756C / KDL-50W800C / KDL-50W805C / KDL-50W807C / KDL-50W808C / KDL-50W809C / KDL-55W755C / KDL-55W756C / KDL-55W800C / KDL-55W805C / KDL Service Manual ▷ View online
41
Troubleshooting
3-3-9. NO SOUND: HDMI 1/2/3/4
No Sound
Check the picture
NG
OK
Refer to HDMI 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
Check Sound by other TV set
which is same model
NG
OK
Does this model have
Analog Audio In
(Stereo minijack)?
YES
NO
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
42
Troubleshooting
3-4. NO PICTURE
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 LVDS FFC
Harness
LCD Panel
(T-CON)
LVDS FFC
Harness
NG
Check
BL_ON
on the B* Board
BL_ON：H
BL_ON：L
Symptom
improvement
BL_ON (L or H):
XM-H/A/DT(BMX):
XM-H/A/DT(BMX):
IC9013 (Pin 4)
Replace
the B-Board
NG
B-Board NG
Symptom improvement
No
Backlight
Note: Board Details refer Section 3
main page.
43
Troubleshooting
BMX Probing Points
BMX (B-Side)
JL8401
(PANEL_VCC)
44
Troubleshooting
F8401
(+12V_REG)
BMX Probing Points
BMX (A-Side)
Click on the first or last page to see other KDL-43W755C / KDL-43W756C / KDL-43W800C / KDL-43W805C / KDL-43W807C / KDL-43W808C / KDL-43W809C / KDL-50W755C / KDL-50W756C / KDL-50W800C / KDL-50W805C / KDL-50W807C / KDL-50W808C / KDL-50W809C / KDL-55W755C / KDL-55W756C / KDL-55W800C / KDL-55W805C / KDL service manuals if exist.