Sony KD-49X8005C Service Manual page 126

3-3-7. 6 Times Blinking (Backlight Error)
6-times blinking
Check a voltage of
BL_ERR_DET.
Check point is
JL9007
or
23pin of CN9000
on B*Board
Voltage < 1.8 V
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
Check
Voltage ≥ 1.9 V
harness/connection
G*board to B*Board
or
LD board to B*Board
Connection OK
Harness /
Connection
Change
broken
harness
Harness /
LED driver or G* board
 Change LD board or G* board.
No improvement
Change
No Improvement
Change
B* board
Symptom
Improvement
No improvement
Symptom
Improvement
Symptom
Improvement
Panel
Symptom
Improvement
TROUBLE SHOOTING
Harness
LD board/G board
Panel
B* Board
126