Hitachi 42HDM12 Service Manual page 13

No picture issue
Picture is not diaplayed (LED is lighting)
Is the LED red or
Green
Is it the power
saving mode ?
Yes
Is the voltages of
CN10/CN11 on the
power supply unit?
Yes
Are the voltages applied to
CN64①⑩ of the power
supply unit correct?
Yes
Panel module
Red
green ?
Yes
Input signal
cables or
PCB-Main
Power supply unit
Note: Voltage shown for CN10 and CN11 are at Power On State.
Power off voltages are 0V, except CN11 Pin 10, this voltage is always
present.
Is voltage applied to
CN11 ⑩(st-5v) ?
PCB-Main
No
No
Power supply unit
①5V ⑤⑥12V
(CN10)
(CN11) ①5V ③④3.3V ⑩st-5V
13
No
Power supply
unit
CH 1