Panasonic TH-42PX75U - Connecting Equipment

LED blinks 4 times
<Trouble Mode and Defective Board>
Trouble Mode
Power Supply SOS
Defective Board
Primarily P board or possible D board
<How to find the defective boards>
D Board
Turn the unit on.
Is pin 12 of CN P25 of
the P board high
before shutdown?
P Board
Yes
No
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
10
Note: CN = Connector