Wednesday, September 12, 2012

PANASONIC TH42X500U TH50X500U Power LED flashing timing chart.

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]
LED indicators on the SS and SC boards alert when a problem exists.  The LED should be lit during normal operation, a dark LED indicates that a problem exists on that board.
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