Panasonic TC-P55VT60 - Page 48

Slide 48
Troubleshooting 2 Blinks Failure (All VT60 and ZT60 Models)
Blink
Code
List of boards likely to cause this symptom.
No specific order
2 Blinks A Board C1-C2-C3 P Board Panel
Yes No
Is there a
short circuit?
Replace the A
board
Slide 48
Unplug connectors A31
and A32 on the A board.
Measure the resistance
between chassis ground
and any of the
SRV_P3.3V test points
on the C boards.
Is there
a short
circuit?
No
Replace the
A board
Yes
Unplug the TV. Measure the resistance between chassis ground and any of the SRV_P3.3V test
points on the C boards. (For SRV_P3.3V locations see the picture on the next slide).
Remove the ribbon cable between the C2 board and the C3 board. Measure the
resistance between chassis ground and the SRV_P3.3V test points on the C2 boards.
Is there a
short circuit?
No Yes
Replace the
C3 board
Remove the ribbon cable between the C1 board and the C2
board. Measure the resistance between chassis ground and
any of the SRV_P3.3V test points on the C1 boards.
Remove all the connectors between the C
boards and the panel. Measure the resistance
between chassis ground and any of the
SRV_P3.3V test points on the C boards.
Is there
a short
circuit?
No
Yes
The Panel is
defective
Is there
a short
circuit?
No
Yes
Replace the
C2 board
Replace the
C1 board
Unplug the TV. Set your voltmeter to measure DC
voltage. Ground the negative (Black) lead and place
the positive (Red) lead on: pin 12 of connector P6 on
the P board for models TC-P55VT60 and TC-
P60VT60) and pin 13 for all other VT60 and ZT60
models. Plug-in the TV and press the power switch.
Does
15V appears
briefly?
Yes
No
Start Here
Replace the P
board
TC-P60ZT60
TC-P65VT60
TC-P60VT60
TC-P55VT60
Applies to
Models
TC-P65ZT60