Sony KD-55S8005C Service Manual ▷ View online
KD-55/65S8505C, KD-55/65S8005C
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 4.5 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 3.1 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.
109
KD-55/65S8505C, KD-55/65S8005C
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
110
KD-55/65S8505C, KD-55/65S8005C
TROUBLE SHOOTING
3-5-1. No Picture AEP Destination (BMFL/BMFW) SCART
No Picture AEP
SCART CVBS
No Picture
Check wave between
C7511 and IC1000
Detailed check all parts at
CN7501 along signal path
at Pin No:
20 : [D7505/R7518/C7510/
R7599/R7519]
Check SCART_FB
IC1000 L37
[SOY0] at R7514
*
Check CN7501
Connection
Muffin [IC1000]
Problem
SCART RGB
No Picture
OK (Vpp: 1 V)
Check wave between
C7502/C7505/C7507
and IC1000
**
Detailed check all parts at
CN7501 along signal path
at Pin No:
7 : [VD7503/R7503/C7501/
R7504]
11 : [VD7502/R7506/C7503/
R7507]
15 : [VD7501/R7510/C7506/
R7511]
NG (Vpp: 0 V)
Check SCART_FB
IC1000 L37
[SOY0] at R7514
*
Check CN7501
Connection
NG
[LOW: 0V]
OK [HIGH: 0.4V Composite]
OK [HIGH: 3V RGB]
Muffin [IC1000]
Problem
**
Detailed check all parts
at SCART_FB signal
Path [VD7504/R7513]
CN7501 Connectivity
Problem
Parts Broken
CN7501 Connector
Problem
OK
NG
CN7501 Connectivity
Problem
NG
OK
NG
NG
**
Detailed check all parts
at SCART_FB signal
Path [VD7504/R7513]
Parts Broken
CN7501 Connector
Problem
OK
OK
OK
NG
NG
OK
**
OK Condition : No part short-circuited
NG Condition : Part short-circuited
NG (Vpp: 0 V)
OK (Vpp: 1 V)
*
OK Condition : No solder splash can be seen
NG Condition : Solder splash can be seen
[All voltage measurement using Oscilloscope]
NG
[LOW: 0V]
OK [HIGH: 0.4V Composite]
OK [HIGH: 3V RGB]
111
KD-55/65S8505C, KD-55/65S8005C
TROUBLE SHOOTING
3-5-2. No Picture AEP Destination (BMFL/BMFW) VIDEO
Video 2
No Picture
Check wave
Between
C7515/C7518/C7520
and IC1000
**
Detailed check all parts
at signal path of:
Y1P : [D7530/R7524/C7514/
R7527]
PB1P : [VD7508/R7529/C7517/
R7530]
PR1P : [VD7509/R7532/C7519/
R7553]
OK
Check if input OSD
is GREY OUT
OK if it is highlighted
Component
No Picture
NG
*
Check J7504 Con
VIDEO_DET at
R7539,
CR_DET at R7538
Check wave between
C7512 and IC1000
**
Detailed check all parts
at CVBS3P signal path
[D7530/R7524/R7525]
Check if input OSD
is GREY OUT
OK if it is highlighted
*
Check J7504
Connection,
VIDEO_DET
At R7539
Muffin [IC1000]
Problem
OK
NG
Muffin [IC1000]
Problem
No Picture AEP
J7504 Connectivity
Problem
**
Detailed check all
parts at VIDEO_DET
signal Path [R7535]
Parts Broken
J7504 Connector
Problem
OK
NG
**
Detailed check all parts
at VIDEO_DET signal
Path [R7535] and CR_DET
signal path [R7534]
Parts Broken
J7504 Connector
Problem
OK
NG
J7504 Connectivity
Problem
**
OK Condition : No part short-circuited
NG Condition : Part short-circuited
*
OK Condition : No solder splash can be seen
NG Condition : Solder splash can be seen
OK (Vpp: 1 V)
NG (Vpp: 0 V)
OK (Vpp: 1 V)
NG (Vpp: 0 V)
[All voltage measurement using Oscilloscope]
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
OK (Vpp: 3.3 V)
NG (Vpp: 0 V)
112
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