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
37
Troubleshooting
3-3-4. No Sound: HP / Lineout Only for BMX board only
BMX board Side B
Troubleshooting Reference
JL7702
JL7701
38
Troubleshooting
3-3-5. No Sound : Scart Out Audio (For Europe model) BMX board only
No Sound
SCART out only
BMX Power On checking
This is for Main SP got sound, but SCART out no sound.
Please check this condition in Digital RF mode
GN1 Main Board Power On Checking
No Checking Item
OK
NG
If NG
1
Check CL7851 ,CL7852.
(with audio signal input –
Digital RF mode)
Can see output audio signal
waveform
Cannot see audio
signal waveform
Go to checking
3-3-2: NO SOUND:
Audio (Additional : For
Europe models only)
2
Check IC7851 pin3
Vdc = 3.3V ± 0.3V
No 3.3V supply
3
Check C7854, C7855
(with audio signal input –
Digital RF mode)
Can see input audio signal
waveform
Cannot see audio
signal waveform
Muffin IC (IC1000) NG
39
Troubleshooting
39
BMX board Side A
Troubleshooting Reference
CL785
1
CL785
2
IC7851
3
C7854
C7855
6
4
5
C7852
7
1
10
40
Troubleshooting
3-3-7. NO SOUND: TUNER
This troubleshooting is only for Analog
No Sound with normal
picture
Please refer Audio
troubleshooting
YES
NO
Only RF tuner input?
Check IC1000 (SoC)
No Sound
Check the picture
NG
OK
Refer
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)
No Sound Audio
Change B* Board.
3-3-8. NO SOUND: MHL
Note: Board Details refer Section 3
main page.
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.