Troubleshooting 12 Blinks Failure - Panasonic TC-PXXGT30 Technical Manual

Troubleshooting 12 Blinks Failure

Blink List of boards likely to cause this symptom.
Code
nd rd th th th th
Main Suspect 2 3 4 5 6 7
12 A Speaker
Cautions: Disconnect the AC Power prior to making any disconnection or connection.
If the power LED continues to blink even after the TV is unplugged, press and hold the power switch on the TV for a few
seconds until the LED turns off.
When taking voltage reading, place the voltmeter probe at the test point, component, or connector's pin indicated before
connecting the TV to the AC line. This will ensure voltage reading accuracy before the TV shuts down. (Since the TV is
shutting down, expect the voltage to only come up a couple of seconds.)
Start Here
Unplug the TV and disconnect connectors A11and
A12 from the A board. Plug in the TV and press the
power switch
Does the
Yes
No
TV power
up and
stay on?
If the speakers wires are not pinched, Replace
Replace the speaker or Woofer the A board
Slide 73