Led Blinks 11 Times; Led Blinks 12 Times (Th42Pd60U, Th-37/42/50Px60U) - Panasonic TH-37PX60U Technical Manual

LED blinks 11 times

<Trouble Mode and Defective Board>
Trouble Mode
Fan SOS
<How to find the defective boards>
Make sure that all the fan connectors, connector PA5 on the PA
board and connector P5 on the P board are connected properly.
Yes
No
Is the anode of D5804
of the PA board high
before shutdown?
No
Replace the
DG board.
LED blinks 12 times
<Trouble Mode and Defective Board>
Trouble Mode
Sound SOS
<How to find the defective boards>
Make sure that the connector P5 on the P board and connector PA5 on
the PB board are seated properly.
Disconnect the connector PA2 of
the PA board and turn the unit on.
No
Does the
power LED blink 12
times?
Yes
Disconnect connector DG3 and PA5 of the
DG and PA boards and plug the TV into
the AC line and observe the SC and SS
board LEDs.
Do the AC
Yes
relays click and
remain on? Are the
SC and SS board
LEDs on?
Yes
No
(*1) = To avoid potential shock from the VSUS voltage, discharge the
connectors SC2 or SS11 before reconnecting them into their respective socket.
Defective Board (Possibility)
Fan, PA Board
Is the cathode
of D5805 (D5817 TH-65-
PX600U)of the PA board high
before shutdown?
Do not disconnect the fans.
Is the voltage at pin 3 of any of the fan
connectors high before shutdown?
Yes
Replace the
PA board.
(TH42PD60U, TH-37/42/50PX60U) (TH-65PX600U)
Defective Board (Possibility)
Speakers, PA Board
Warning: Disconnect AC Power
prior to making any disconnection
or connection.
Check the speakers.
Reconnect CN DG3 and PA5.
Disconnect CN SC2(*1),
SC23 and SC20 of the SC
board. Turn the unit on.
Is the
No
voltage at
DG
pin 35 of
Board
CN PA20
High?
PA Board
No
Replace the DG board.
Yes
Replace the fan that outputs a high at
pin 3 of its connector.
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
27
(*2) = Remove the jumper at CN SS34 and
install it across pin 8 and 10 of connector P12.
(*3) = The reference number of the sustain
data connector is different in some of the
models:
TH-37PX60U = SS23
TH-42PD60U = SS23
TH-42PX60U = SS23
TH-50PX60U = SS43
TH-58PX60U = SS44
TH-65PX600U = SS44
Disconnect CN SS11(*1),
SS12 (*2) and SS23 (*3)
of the SS board. Turn the
unit on.
Yes
Does the power
LED blink 12
times?
Does
the power LED
blink 12 times?
No
SC Board
SS Board
28
PA Board
Note: If this condition arises
after replacing the PA board,
confirm the presence of a
jumper across the empty fan
connector.
Do pins 1
Yes
and 2 of CN P25
output 15V before
the unit shuts
down?
No
No
P Board
Yes
D Board