Sony KDL-40NX800 / KDL-40NX803 / KDL-40NX805 / KDL-52NX800 / KDL-52NX803 / KDL-52NX805 Service Manual ▷ View online
KDL-40/52NX800Series(AEP/UK)
29
TROUBLE SHOOTING
6) 7 times blinkings (Temperature Error)
7 times Blinkings
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
B* Board
Set to another
Location, etc.
Change B* Board,
and Aging a few hours
Panel
5) 6 times blinkings (Backlight Error)
6 times Blinkings
Check
PANEL_FAIL at
JL2565
on the B* Board
G* Board
B* Board
Under 2.65V
Change G* Board
Panel (T-con)
NG
OK
NO
YES
NG
OK
Over 2.65V
KDL-40/52NX800Series(AEP/UK)
30
TROUBLE SHOOTING
3-5. NO PICTURE
No Picture
Press HOME Key
XMB (Menu) displayed?
B* Board
Replace
the LVDS Harness
LCD Panel
(T-con)
Harness
(LVDS)
Check
BL_ON at JL2566
on the B* Board
BL_ON:H
B* Board
Check Harness
(Between G* Board
to B* Board)
Harness
(G* to B*)
BL_ON: not H
Change B* Board
G* Board
NO
YES
NG
OK
NG
OK
NG
OK
PANEL_VCC
At JL3806 on the
B* Board
G* Board
YES
NO
about 5V ： 22” Model
about 12V : ex. 22” Model
about 12V : ex. 22” Model
KDL-40/52NX800Series(AEP/UK)
31
TROUBLE SHOOTING
3-6. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the B* Board
B* Board
Speaker
NG
OK
NG
OK
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-40/52NX800Series(AEP/UK)
32
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
B* to Switch Unit
harness check
Switch Unit
Harness
Switch Unit change
B* Board
OK
NG
OK
NG
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