TNPA3242/3243[Scan out upper&lower]
TNPA3544[Sustain drive]
TNPA3625[Digital signal processor]
The unit is equipped with a self protection circuit that places it in standby when there is an abnormality with one or more of the Power Supply circuits. The faulty circuit may be easily identified by counting the number of flashes emitted by the power LED located in front of the unit.
Number of power LED blinks.
|
Suspected board
|
1
|
D, P BOARD
|
4
|
P, PA BOARD [POWER SOS]
|
5
|
D, P BOARD[5V SOS]
|
6
|
SC BOARD [SC ENERGY RECOVERY AND SC FLOATING VOLTAGE]
|
7
|
SS BOARD [SS DATA ENERGY RECOVERY AND DATA DRIVER]
|
8
|
SS BOARD [SS ENERGY RECOVERY]
|
9
|
INCORRECT D, DG BOARD
|
10
|
PA BOARD [NO POWER FOR TUNER]
|
11
|
PB BOARD, FAN [FAN SOS]
|
12
|
H, PB, Z BOARD [SOUND SOS / SPEAKER SHORTED]
|
TH-42PD50U BOARD DESCRIPTION & PART NUMBERS
Board name
|
Board description
|
Board part number
|
P
|
POWER SUPPLY
|
TNPA3570
|
PA
|
DC-DC CONVERTER, POWER SOS
|
TNPA3620
|
PB
|
AUDIO POWER
|
TNPA3643
|
H
|
AV TERMINAL, AV SWITCH
|
TNPA3598AB
|
DT
|
ATSC INTERFACE
|
TNAG156
|
DV
|
HDMI INTERFACE
|
TNPA3626
|
DG
|
DIGITAL SIGNAL PROCESSOR
|
TNPA3625AF
|
Z
|
SPEAKER OUT, AUDIO AMP
|
TNPA3621AB
|
D
|
FORMAT CONVERTER, PLASMA AL PROCESSOR
|
TZNTNP010YFS
|
C1
|
DATA DRIVER-LEFT
|
TNPA3545
|
C2
|
DATA DRIVER-RIGHT
|
TNPA3546
|
SC
|
SCAN DRIVE
|
TNPA3543
|
SU
|
SCAN OUT [UPPER]
|
TNPA3242
|
SD
|
SCAN OUT [LOWER]
|
TNPA3243
|
SS
|
SUSTAIN DRIVE
|
TNPA3544
|
K
|
REMOTE RECEIVER, KEYSCAN
|
TNPA3603
|
S
|
POWER SWITCH
|
TNPA3604
|
