LED blinks 2 times
<Trouble Mode and Defective Board>
Trouble Mode
15V down SOS
Defective Board (Possibility)
P, A, SC, SS Board (P > A, SC, SS)
SC Board
A Board
No
SS Board
Yes
9
A Board
Yes
No
P Board
Is pin 1 or 2 of the CN P25
shorted to GND?
Yes
Yes
Note: CN = Connector
No
No
Warning: Disconnect AC Power prior to making any
disconnection or connection
(*1) = The reference number of the sustain data
connector is different in some of the models:
TH-42PX80U = SS23
TH-50PX80U = SS23
(*2) CAUTION: Before connecting P2/SC2 or
P11/SS11, discharge is necessary to prevent
potential shock caused by VSUS.
Unplug the TV,
Re-connect CN
P12, SS11, SS34,
and SS23 (*1).
Turn the TV on.
Is there
15V output
at CN P25
pin 1 or 2
before the
TV shuts
down ?
Unplug the TV.
Disconnect CN P25.
Unplug the TV and disconnect CN SC20 and SC2.
To isolate the SC board. Re-connect the TV and
turn the power on.
Unplug the TV, reconnect SC20 and (*2)
SC2 and disconnect CN P12 from the P
board and SS11 and SS23 (*1) from the
SS board to isolate the SS board.
Remove the jumper at CN SS34 and
install it across pin 8 and 10 of connector
P12. Plug in the TV and turn the power on.
Does the
power
LED stay
on?
Does the
power
LED stay
on?
Is pin 1 or 2
of the CN
P25 shorted
to GND?
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