Sony KDL-40NX800 / KDL-52NX800 / KDL-60NX800 (serv.man2) Service Manual ▷ View online
KDL-40/52/60NX800(WB)
29
TROUBLE SHOOTING
6) 7 times blinkings (Temperature Error)
7 times Blinkings
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
BUHS Board
Set to another
Location, etc.
Change BUHS Board,
and Aging a few hours
Panel
5) 6 times blinkings (Backlight Error)
6 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BUHS Board
G* Board
BUHS Board
Under 2.65V
Change G* Board
Panel (T-con)
NG
OK
NO
NG
YES
OK
Over 2.65V
KDL-40/52/60NX800(WB)
30
TROUBLE SHOOTING
3-5. NO PICTURE
No Picture
Press HOME Key
XMB (Menu) displayed?
BUHS Board
Replace
the LVDS Harness
LCD Panel
(T-con)
Harness
(LVDS)
Check
BL_ON at JL2566
on the BUHS Board
BL_ON:H
BUHS Board
Check Harness
(Between G* Board
to BUHS Board)
Harness
(G* to BUHS)
BL_ON: not H
Change BUHS Board
G* Board
NO
NG
NG
NG
YES
OK
OK
OK
PANEL_VCC
At JL3806 on the
BUHS Board
G* Board
YES
NO
about 5V ： 22” Model
about 12V : ex. 22” Model
about 12V : ex. 22” Model
KDL-40/52/60NX800(WB)
31
TROUBLE SHOOTING
3-6. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the BUHS Board
BUHS Board
Speaker
NG
OK
OK
NG
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-40/52/60NX800(WB)
32
3-7. TV COMMANDER BUTTONS MALFUNCTION
1) TV button malfunction
TROUBLE SHOOTING
Button malfunction
on the TV
BUHS to Switch Unit
harness check
Switch Unit
Harness
Switch Unit change
BUHS Board
OK
OK
NG
NG
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