Panasonic TH-42PX600U - Plasma Panel Replacement: Board Removal (Cont.); DG-Board and H-Board Removal

LED blinks 7 times (all models except TH-58PX60/600U)
<Trouble Mode and Defective Board>
<How to find the defective boards>
Trouble Mode
SC Floating voltage SOS
Defective Board (possibility)
SC, SU, SD, P board (SC,SU,SD>D,P)
SS Board
P Board
Disconnect
the connectors SC2,
SC23, and SC20 from
the SC board. Turn the
TV on. Does the TV
power up and
stay on?
Turn the TV on.
Does 15Vdc appear
at pin 1 of CN P23 on the
P board before the unit
shuts down?
Turn the TV on.
Does VSUS(*1)
voltage appear at pin 1 of
CN P2 of the P board
before shutdown?
Connect
the connectors SC2(*2),
SC23, and SC20 to the
SC board. Remove the SU
board. Turn the TV on.
Does the TV power up
and stay on?
SU Board
Yes
No
Yes
No
Yes
No
Yes
No
Make sure the connectors P2/SC2, P23/SC23 SC20/D20 located are not loose and seated properly.
Note: CN = Connector
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
Install
the SU board and
Remove the SD board.
Turn the TV on. Does
it power up
and stay on?
SD Board
Yes
No
P Board
Replace the SC
board. Turn the TV
on. Does the TV
power up and
stay on?
End
D Board
Yes
No
(*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.
21
LED blinks 7 times (TH-58PX60/600U)
<Trouble Mode and Defective Board>
<How to find the defective boards>
Trouble Mode
SC Floating voltage SOS
Defective Board (possibility)
SC, SU, SD, P board (SC,SU,SD>D,P)
SS Board
P Board
Disconnect
the connectors SC2,
SC23, and SC20 from
the SC board. Turn the
TV on. Does the TV
power up and
stay on?
Turn the TV on.
Does 15Vdc appear
at pin 1 of CN P23 on the
P board before the unit
shuts down?
Turn the
TV on. Does
VSUS(*1) voltage appear
at pin 1 of CN P2 of the P
board before
shutdown?
Connect
the connectors SC2(*2),
SC23, and SC20 to the
SC board. Remove the SU
board. Turn the TV on.
Does the TV power up
and stay on?
SU Board
Yes
No
Yes
No
Yes
No
Yes
No
Make sure the connectors P2/SC2, P23/SC23 SC20/D20 located are not loose and seated properly.
Note: CN = Connector
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
Install
the SU board and
Remove the SD board.
Turn the TV on. Does
it power up
and stay on?
SD Board
Yes
No
P Board
Replace the SC
board. Turn the TV
on. Does the TV
power up and
stay on?
End
D
Board
Yes
No
(*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.
Disconnect
the connectors
P11(*1), P12 and SS44
(*2) from the SS board.
Turn the TV on. Does the
TV power up and
stay on?
No
Yes
No
SS Board (*3)
22