Led Blinks 10 Times At Plug-In - Panasonic TH-42PZ80U Technical Manual

The power LED blinks 10 times at plug-in
NOTE: When taking voltage reading, place your meter's probe
on the test point or pin indicated before connecting the TV to the
AC line. The voltage you intent to measure may only appear for
a brief moment.
Warning: Disconnect AC Power prior to making any
disconnection or connection
Unplug the TV and disconnect
connector P6 on the P board. Using a voltmeter,
place the positive probe at pin 7 of connector P6
while the negative probe is grounded. Plug in the TV
Is there 15V
No
present when the TV
is plugged into the
AC line?
Replace
The P board
No
Replace the
GH board.
No
pin 7 of connector P6/A6 when
Yes
Replace
The A board
Unplug the TV.
Reconnect
connector A52 and
leave connector GH11
disconnected.
Plug in the TV
Does the
Yes
power LED
blink 10 times?
Replace the
GS board.
Is
Yes
there 15V at
the TV is plugged into
the AC line?
Unplug the TV. Reconnect
connector A1 only.
Plug in the TV
Yes
No
Does the
power LED
blink 10 times?
27
Continue from the
previous slide
Unplug the TV. Disconnect
connectors A1, GS52, and
GH11 on the A board.
Plug in the TV
No Does the
power LED
still blink
10 times?
Replace
the K board.
Yes
Replace
The A board