Hitachi 42EDT41A Service Manual page 56

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Picture is not displayed (LED is lighting)
Is the LED red or
green/orange?
green/orange
Is it the power
saving mode?
No
Input signal Cable
or Formatter PWB
Is the voltage
of CN68 pin
on the Power supply unit
5V?
Yes
Are the voltages
of CN64
pin
on the Power supply unit
correct?
65V
185V
Yes
GND
Panel Module
red
of the Power supply unit?
Yes
No
Power supply unit
No
Is the voltage
of CN68 pin
on the Power supply unit
correct ?
Yes
Power supply unit
56
Is Voltage
No
applied to CN63 pin
+5V
Yes
Power supply
Formatter PWB
No
+3V
GND
Panel Module
PW1A
unit

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