Led Blinks 2 Times (Th-37Px60, Th-42Pd60U, Th-42Px60U \ 600U); Led Blinks 3 Times - Panasonic TH-37PX60U Technical Manual

LED blinks 2 times
<Trouble Mode and Defective Board>
Trouble Mode
15V down SOS
<How to find the defective boards>
Turn the unit on.
Is there 15V output
at CN P25 pin 1 or 2 before
Shutdown ?
Yes
D Board
With the power SW OFF, disconnect
CN P5. To isolate the PA board
board.
Turn the unit on.
Does the power
LED blink 2 times? The
power LED may blink 12
times.
Yes
P Board

LED blinks 3 times

<Trouble Mode and Defective Board>
Trouble Mode
3.3V down SOS
<How to find the defective boards>
In this case, the defective board is D board only.
(TH-50PX60U\600U, TH-58PX60U\600U, TH-65PX600U)
Defective Board (Possibility)
P, D, PA, SC, SS Board (P > PA, D, SC, SS)
Power SW OFF.
No
Disconnect CN P25. Check
pin 1 or 2 of the socket for a
Short to GND?
Yes
No
PA Board
Defective Board
D Board
Warning: Disconnect AC Power prior to
making any disconnection or
(*1) = The reference number of the sustain data
connector is different in some of the models:
TH-50PX60U = SS43
TH-50PX600U = SS43
TH-58PX60U = SS44
No
With the power SW OFF, disconnect
CN SC23, SC20, and SC2. To isolate
the SC board.
Turn the unit on.
Does the power LED
blink 2 times?
With the power SW OFF, disconnect CN P12, SS11, and SS43
(*1). to isolate the SS board. Remove the jumper at CN SS34
and install it across pin 8 and 10 of connector P12.
Turn the unit on.
Does the power LED
blink 2 times?
Yes
D Board
9
Warning: Disconnect AC Power prior to
making any disconnection or
10
connection.
TH-58PX600U = SS44
TH-65PX600U = SS44
No
SC Board
No
SS Board
connection.