Hitachi 42PD9700C Service Manual page 41

Power cannot be turned on (LED does not light)
Is
the input voltage
applied to Power supply unit ?
(CN61 (1),(3))
Yes
Are the
voltages applied to
CN63(1) pin and CNPPS(3)(8)pins
of Power supply unit ?
Yes
Check Sub-power / FC PCB
42PD9700 & 55PD9700
No
AC inlet Main switch
(SW PCB)
No
[CN63] (1) +5V
[CNPPS] (3) +24V / (8) +10V
40
AC Fuse
Filter PCB
F902 T6.3AH 250V
Power supply unit
*Re-adjustment is reqired.
Plese refer to 'Power Unit
Vs,Va Adjustment' page.