Sony KDL-40E4500 Service Manual ▷ View online
– 8 –
KDL-40E4500
RM-GD004W
SECTION 3
TROUBLESHOOTING
Trouble
YES
Set Power
NO
See Section 3-1:
No Power
No Power
See Section 2-5:
Standby Led Error
Display
Standby Led Error
Display
See Section 3-2:
Audio Problem
Audio Problem
See Section 3.3:
Video problem
Video problem
Audio
Video
Red blinks
LED
Green
– 9 –
KDL-40E4500
RM-GD004W
3.1 No Power
3.3Vdc
CN6401 #3
CN6401 #3
on BGA
NO
Power board
(No STBY 3.3V)
(No STBY 3.3V)
YES
NO
207
253Vac
Inlet on Power
board
board
YES
AC cable or AC
inlet
inlet
No Power
(No relay clicks)
YES
Does Power
button work?
button work?
NO
Switch Unit
BGA board
– 10 –
KDL-40E4500
RM-GD004W
3.2 Audio Problem
Audio
problem
Only
Speaker out?
YES
NO
UI setting
correct?
Volume, SP
off/On
HP Link
Analog
Channel
Problem?
Digital
Channel
Problem?
HDMI
Problem?
Set correctly or
reset by menu.
reset by menu.
Check Speaker or
BGA board
BGA board
NO
YES
NO
NO
Check
BGA board
BGA board
Check
BGA board
BGA board
Check
BGA board
BGA board
YES
YES
YES
NO
Check
BGA board
BGA board
– 11 –
KDL-40E4500
RM-GD004W
3.3 Video Problem
Video
problem
All inputs
have
problem?
YES
NO
Analog
Channel
Problem
Problem
?
Digital
Channel
Problem?
HDMI
Problem
?
Check
LVDS harness
Power boards
BGA board
Panel Module
LVDS harness
Power boards
BGA board
Panel Module
NO
NO
Check
BGA board
BGA board
Check
BGA board
BGA board
Check
BGA board
BGA board
YES
YES
YES
NO
Check
BGA board
BGA board
NO
Check
BGA board
BGA board
YES
YES
Back Light
turn on?
OSD
appear?
NO
Check
LVDS harness
LVDS harness
BGA board
Panel Module
Panel Module
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