Sony GN3TR - Led Blinking 6 X (Backlight Error)

XBR-49/55/65/75X900E
TROUBLE SHOOTING
FLOW
2-5. LED BLINKING 6X (BACKLIGHT ERROR)
30
Harness /
Connection
broken
6-times blinking
Check Voltage of
“BL_LD_ERR_DET”
at CL1038 on BMKS
Voltage ≥ 1.9 V
Symptom
Improvement
Harness
Replace
harness
Replace
BMKS
BMKS Board
Harness /
Connection OK
No
improvement
Voltage < 1.9 V
Panel
Replace
Panel
Symptom
Improvement
No
Improvement
Symptom
Improvement
LED driver or G board
Replace LD board or G board.
No
improvement
LD board/G board
Symptom
Improvement
G/LD Board: G board or LD board
Check
harness/connection
G/LD board to BMKS