Panasonic TC-P55VT60 Technical Troubleshooting Manual page 50

Troubleshooting 3 Fast Blinks Failure (TC-P55VT60 – TC-P60VT60)
1. Unplug the TV.
2. Remove any residual charge from the Vsus and Vda lines. Use a 5W 500 ohms resistor.
3. Measure the resistance between:
•
Chassis ground and pin 1 of connector P2 on the P board (Vsus).
•
Chassis ground and pin 12 of connector P6 on the P board (P15V).
•
Chassis ground and pin 1 of connector P35 on the P board (Vda).
Note: A dead short or a reading lower than 1K indicates a shorted or partially shorted line.
Unplug the TV and remove connector A1
from the A board. Plug in the TV and press
the power button.
Does the TV turn on
No
and stays on with the power
LED off?
Unplug the TV and reconnect A1. Set your
voltmeter to measure DC voltage. Ground
the negative (Black) lead and place the
positive (Red) lead on pin 10 (F15V) of
connector P6 on the P board. Plug-in the
TV.
Does
No
15V
appears
briefly?
Replace the P
board
Is there a short
No
circuit of the Vsus,
P15V, or Vda?
Unplug the TV. Reconnect
Yes
Bluetooth module. Plug in
the TV but don't turn it on.
OFF
Yes
Replace the A Replace the
board
Bluetooth module
( 1 of 3)
Start Here
Blink
Code
3 Blinks
Yes
A1 and disconnect the
Blinking
Is the power LED
3 times
off or is it blinking 3
times continuously
at a fast pace ?
Replace the
K board
Applies to Models
TC-P55VT60
TC-P60VT60
List of boards likely to cause this
symptom.
No specific order
P, SS SC, A, K, Bluetooth module,
Cs, Panel
Shorted
Shorted
pin 12
pin 1
of
of
connector
connector
P6
P35
Shorted
Shorted
P15V Vda
Continue on
next slide (B)
Continue on
next slide (C)
next slide (A)
Slide 50 Slide 50
Shorted
pin 1
of
connector
P2
Shorted
Vsus
Continue on