Hitachi LE55S606 Service Manual page 12

2). No Picture, Picture Failed (Color Failed, Dark Picture, Beat Noise, Etc.)
First, confirm the connection of all connectors between Board's, then survey by following the flowchart as shown
below.
No Picture, Picture failed
(Color failed, Dark picture,
Occurred at only
Video input (CVBS)?
LE55S606/LE55T506/LE55T516/LE55U516
Beat noise, etc.)
No
Voltage of all pin of
CN701 on Main Board is
correct?
Yes
Main Board
Yes
Main Board
No
Power Board
CN701 (1)
(2)
(3)~(4)
(5)~(7)
(8)~(9)
(10)
(11)~(12) 5V
(13)
12
3.3V
0~3.3V
12V
0V
24V
3.3V
3.3V