LED blinks 5 times (TH-42PX80U)
Trouble Mode
5V SOS
Defective Board
P, C, SC, SS board or Panel
No
No
Yes
No
Yes
No
A Board
Yes
No
C1 Board
Panel
Yes
No
Yes
No
C2 Board Panel
SS Board
Yes
SC Board
P Board
Yes
No
P Board
13
Yes
Note: CN = Connector
Disconnect CN SC20 on the SC
board. Plug in the TV and turn it on
Does the
power
LED stay
on?
Does the
power
LED stay
on?
Connect
CN SC20. Disconnect
CN SS23 (*1) on the
SS board. Plug in the
TV and turn it on
Connect SS23 (*1).
Disconnect CN 31and A32 on the A
board. With the TV disconnected
measure continuity between pin 5 of CN
P25 and GND
Is pin 5 of
CN P25
shorted
to GND?
Connect A31
and leave A32
disconnected.
Is pin 5 of
CN P25
shorted
to GND?
Disconnect
CN P25.
Is pin 5 of
the socket
P25 shorted
to GND?
Disconnect
CB1-CB4.
Is pin 5 of
CN P25
shorted
to GND?
Disconnect
A31 and
connect A32.
Is pin 5 of
CN P25
shorted
to GND?
Disconnect
CB5~CCB8
Is pin 5 of
CN P25
shorted
to GND?
Connect
SC20 and
disconnect
CN SC46.
Does the
power
LED stay
on?
SD Board
(See SD
board
Isolation
procedure
on slide
15)
Yes
No
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