Sony KDL-32EX721 Service Manual page 60

5) 6 times blinking (Backlight Error)
6-time blinking
Check
the harness between
the T-con board and the
LED driver board.
OK
Change G* board
NG
Check FFC connection between
the LED driver board and
the light source
(inside the panel module)
OK
KDL-32/40EX720,721,723,724(AEP/UK)
NG
Harness
Symptom
improvement
G* Board
NG
FFC Connection
Symptom
improvement
Change LED driver
board
NG
Symptom
improvement
Change B*
board
Light Source
(Inside Panel Module)
TROUBLE SHOOTING
LED Driver Board
B* Board
60