Led Blinks 4 Times; Led Blinks 5 Times (Quick Troubleshooting) - Panasonic TH-37PX60U Technical Manual

LED blinks 4 times

<Trouble Mode and Defective Board>
Trouble Mode
Power Supply SOS
<How to find the defective boards>

LED blinks 5 times (Quick Troubleshooting)

<Trouble Mode and Defective Board>
Trouble Mode
5V SOS
<How to find the defective boards>
Defective Board
Primarily P board or possible D board
Turn the unit on.
Is pin 16 of CN P25 of
the P board high
before shutdown?
Yes
P Board
Defective Board
D, P, C, SC, SS board or Panel (DDIC)*1
Disconnect CN P12
of the power supply board. Measure the
resistance of pin 1 of the lead cable to ground.
Is the resistance of pin 1 of
the lead cable P12 zero
ohm?
Panel
Warning: Disconnect AC Power prior to
making any disconnection or
No
D Board
11
Warning: Disconnect AC Power prior to
making any disconnection or
No
Proceed to more extensive troubleshooting of
Yes
12
connection.
connection.
(*1) = Data Driver IC
the pages that follow.