Sony KLV-32EX330 / KLV-32EX33A / KLV-32EX33B / KLV-40EX430 / KLV-40EX43A / KLV-40EX43B Service Manual ▷ View online
KLV- 32 EX330, EX33A, EX33B, 40 EX430, EX43A, EX43B
RM-GA022
Troubleshooting
3-4. Audio Problem
Audio Problem
Main Speaker No Sound
HP Out No Sound
Refer “Main Speaker
No Sound”
Refer “HP Out
HP Out No Sound
*V1, V2/D1 or
PC/HDMI analog
Refer HP Out
No Sound”
Refer “Analog Audio
Input
no sound?
Analog RF
no sound?
No Sound”
Refer “Analog RF
no sound?
HDMI Audio
no sound?
No Sound”
Refer “HDMI Audio
No Sound”
USB Audio
no sound?
Refer “USB Audio
No Sound”
* V1 = Video1, V2 = Video2,
D1 = Component1
25
KLV- 32 EX330, EX33A, EX33B, 40 EX430, EX43A, EX43B
RM-GA022
Troubleshooting
3-4-1. Audio Problem - Main Speaker No Sound
Main Spk No Sound
A
Audio UI Setting, ok?
p
NG
Correct UI
Check D4000 and D4001
Change D4000 or
D4001
NG
OK
Spk Wire,
Connector ok?
Change spk
wire
NG
Check FB4014 and FB4015
OK
Change FB4014
or/and FB4015
NG
OK
Connector, ok?
Spk Impedance
7 8 h
k?
CL4000,CL4001
Change main
spk
NG
NG
Amp IC / Main
IC NG
OK
7~8ohm, ok?
,
CL4002,CL4003 ~1.6Vdc
spk
OK
OK
Refer “Standby LED
IC NG
NG
Check 19.5V_ADAPT
at F6005
NG
y
Blink”
L4000, L4001,
L4002, L4003 ~ 0.9Vdc, ok?
Amp IC NG
NG
OK
Change
at F6005
on B* Board?
F4000
Change BWM/BFM Board
OK
OK
Change
F4000
F4000
Ok?
(*)
Size
B* Board Type
32”
BWM
26
g
A
32
BWM
40’’
BFM
KLV- 32 EX330, EX33A, EX33B, 40 EX430, EX43A, EX43B
RM-GA022
Troubleshooting
3-4-2. Audio Problem - HP Out No Sound
3-4-3. Audio Problem – Analog Audio Input No Sound
HP Out No Sound
HP cable
NG
Analog audio input
no sound
HP cable,
ok?
R3073
3 3Vd
k?
Change HP
cable
OK
NG
Audio RCA cable,
ok?
Change RCA
cable
NG
OK
R3073 ~ 3.3Vdc, ok?
(when insert HP)
Detection NG
NG
OK
Audio analog source,
ok?
Change audio
source
NG
OK
RB5004 x_audio_mute2,
~ 3.3Vdc
Main IC NG
OK
NG
Change B* Board
OK
Change B* Board
OK
(*)
Size
B* Board Type
27
32”
BWM
40’’
BFM
KLV- 32 EX330, EX33A, EX33B, 40 EX430, EX43A, EX43B
RM-GA022
Troubleshooting
3-4-4. Audio Problem –HDMI Audio No Sound
HDMI Audio input
no sound
HDMI
bl
Change
NG
HDMI cable,
ok?
Change
HDMI cable
NG
OK
NG
HDMI source,
ok?
Change HDMI
source
NG
OK
OK
*HDMI sound
format ok?
Change to supported
format
NG
Change B* Board
* Please refer to IM for supported HDMI
audio format.
(*)
Size
B* Board Type
32”
BWM
28
32
BWM
40’’
BFM
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