LED blinks 2 times
<Trouble Mode and Defective Board>
Trouble Mode
15V down SOS
Defective Board (Possibility)
P, D, A, SC, SS Board (P > A, D, SC, SS)
<How to find the defective boards>
SC
Board
D
Board
No
Turn the unit on.
Does the power LED
stay on?
Unplug the TV, reconnect CN A5, A6, and A7 and
disconnect CN SC20 and SC2. To isolate the SC
board.
Unplug the TV, reconnect SC20 and SC2 and disconnect CN P12,
SS11, and SS23 (*1) to isolate the SS board. Remove the jumper at
CN SS34 and install it across pin 8 and 10 of connector P12.
SS
Board
No
Turn the unit on.
Does the power LED
stay on?
Yes
Warning:
Disconnect AC Power prior to
making any disconnection or
connection.
8
(*1)
= The reference number of
the sustain data connector is
different in some of the models:
TH-42PX75U = SS23
TH-42PX77U = SS23
TH-50PX75U = SS33
TH-50PX77U = SS33
Unplug the TV,
Reconnect CN P12, SS11,
And SS23 (*1). Turn the unit on.
Is there 15V output at
CN P25 pin 1 or 2
before the TV
shuts down ?
D
Board
Yes
No
P
Board
Unplug the TV.
Disconnect CN P25. Is pin 1
or 2 of the CN P25 shorted to
GND?
Yes
Yes
Disconnect CN A5, A6,
and A7 on the A board. Does
the TV turn on by itself with
a white screen?
A
Board
Yes
No
Note: CN = Connector
No
Summary of Contents for Viera TH-42PX75U
Page 5: ...Troubleshooting Shutdown Problems 5...
Page 26: ...26...
Page 27: ...Troubleshooting for Picture Problems 27...
