Panasonic G20 Series, Руководство по устранению неполадок, Страница: 59 / 62

Troubleshooting No Power/Dead Unit
Do the AC relays
click after the TV is plugged
into the AC line?
Is the TV turning On
Is there 5V present
when the TV is plugged into
the AC line?
Replace
the A board
Replace
The K board (Check
Wires between A1
and K1)
Replace
The P board
Yes
Yes
Yes
Yes
NO
NO
NO
NO
Unplug the TV and place your volt-meter
on pin 7 of connector P7. Plug in the TV
and press the power switch
Is there 3.2V
present when
the power
button is
pressed?
Unplug the TV and
disconnect A1 on the A
board. Plug in the TV
and turn the power on
Unplug the TV and place your
volt-meter on pin 1 of
connector P7. Plug in the TV
But do not turn the power on
Replace
The P board.
(Check the AC Cord)
Unplug the TV and
disconnect A1 on the A
board. Plug in the TV
but
do not turn the power on
Plug in the TV.
Do not turn the power on
Do the relays click now?
Yes
NO
Replace
the A board
Start Here
Slide 59