Sony KDL-46HX820 / KDL-55HX820 (serv.man4) Service Manual ▷ View online
KDL-46/55HX820(CH)
73
3-5. NO PICTURE
No Picture
Press HOME Key
OSD displayed?
Replace the B-T-con,
T-con-LD* FFC
G* Board
Check the G*-LD* Harness
No
Change B* Board
Change G* Board
B* Board
Harness
B-T-con,
T-con-LD* FFC
B* Board
LCD Panel
(T-con, LD*)
Yes
OK
NG
NG
OK
NG
OK
NG
OK
TROUBLE SHOOTING
KDL-46/55HX820(CH)
74
TROUBLE SHOOTING
3-6. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the B* Board
B* Board
Speaker
OK
NG
NG
OK
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-46/55HX820(CH)
75
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
Replace the Harness
between B* to
Switch Unit
Switch Unit
Harness
Switch Unit change
B* Board
OK
NG
OK
NG
KDL-46/55HX820(CH)
76
TROUBLE SHOOTING
2) IR remote commander malfunction
TV isn’t controlled
by remote commander
Green LED light
at power indicator
OK
NG
Sensor is broken
HLR Board
B* Board
OK
NG
Mechanical
(ex. bezel)
Green LED blinks
at power indicator
at power indicator
when using commander
near sensor’s window
Check the Harness
between the B* Board
and the HLR Board
Exchange the Harness
Exchange the
HLR Board
Harness
OK
NG
OK
OK
NG
NG
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