Led Blinks 7 Times (All Models Except Th-58Px60/600U); Led Blinks 7 Times (Th-58Px60/600U) - Panasonic TH-37PX60U Technical Manual

LED blinks 7 times (all models except TH-58PX60/600U)

<Trouble Mode and Defective Board>
Trouble Mode
SC Floating voltage SOS
<How to find the defective boards>
Make sure the connectors P2/SC2, P23/SC23 SC20/D20 located are not loose and seated properly.
Disconnect
the connectors SC2,
No
SC23, and SC20 from
the SC board. Turn the
TV on. Does the TV
power up and
stay on?
Yes
Connect
the connectors SC2(*2), No
SC23, and SC20 to the
SC board. Remove the SU
board. Turn the TV on.
Does the TV power up
and stay on?
Yes
SU Board
Note: CN = Connector

LED blinks 7 times (TH-58PX60/600U)

<Trouble Mode and Defective Board>
Trouble Mode
SC Floating voltage SOS
<How to find the defective boards>
Make sure the connectors P2/SC2, P23/SC23 SC20/D20 located are not loose and seated properly.
Disconnect
the connectors SC2,
No
SC23, and SC20 from
the SC board. Turn the
TV on. Does the TV
power up and
stay on?
Yes
Connect
the connectors SC2(*2), No
SC23, and SC20 to the
SC board. Remove the SU
board. Turn the TV on.
Does the TV power up
and stay on?
Yes
SU Board
Note: CN = Connector
Defective Board (possibility)
SC, SU, SD, P board (SC,SU,SD>D,P)
Turn the TV on.
Does 15Vdc appear
No
at pin 1 of CN P23 on the
P Board
P board before the unit
shuts down?
Yes
Install
No
the SU board and
Remove the SD board.
Turn the TV on. Does
it power up
and stay on?
Yes
SD Board
Defective Board (possibility)
SC, SU, SD, P board (SC,SU,SD>D,P)
Disconnect
the connectors
No
P11(*1), P12 and SS44
at pin 1 of CN P23 on the
(*2) from the SS board.
Turn the TV on. Does the
TV power up and
stay on?
Yes
No
SS Board (*3)
Install
No
the SU board and
Remove the SD board.
board. Turn the TV
Turn the TV on. Does
it power up
and stay on?
Yes
SD Board
Warning: Disconnect AC Power prior to
making any disconnection or
Turn the TV on.
Does VSUS(*1)
voltage appear at pin 1 of
CN P2 of the P board
before shutdown?
SS Board
Replace the SC
No
board. Turn the TV
D Board
on. Does the TV
power up and
stay on?
Yes
End
21
Warning: Disconnect AC Power prior to
making any disconnection or
P Board
Turn the TV on.
Does 15Vdc appear
No
P board before the unit
shuts down?
Yes
Replace the SC
No
D
Board
on. Does the TV
power up and
stay on?
Yes
End
22
connection.
No
P Board
Yes
(*1) VSUS about 180V
(Accurate voltage is
provided on the Panel
Label)
(*2) CAUTION:
Before connecting
P2/SC2 or P11/SS11,
discharge is necessary
to prevent potential
shock caused by
VSUS.
connection.
Turn the
TV on. Does
No
VSUS(*1) voltage appear
P Board
at pin 1 of CN P2 of the P
board before
shutdown?
Yes
SS Board
(*1) VSUS about 180V (Accurate
voltage is provided on the Panel
Label)
(*2) CAUTION: Before connecting
P2/SC2 or P11/SS11, discharge is
necessary to prevent potential
shock caused by VSUS.
(*3) If the power LED continues to
blink after replacing the SS board,
change the D board.