Friday, September 21, 2012

PANASONIC TC22LR30 TC-26LX20 TC32LX20 Power Supply Troubleshooting

Power Supply Troubleshooting Panasonic TC22LR30 TC-26LX20 TC32LX20 LCD TV
TROUBLESHOOTING
If a problem occurs either in the unit or power supply a protection circuit is activated, and the unit shuts down.  The power indicator on the front of the unit will flash red several times indicating an error code.  Error code vary for different models.
LED FLASHES THREE TIMES
  • Is the drive [12V] present on pin-4 of connector PAP7 of AP board?  If NO, Check regulator IC805 on the AP board.  If there is 12V;
  • Is Sub [9V] present on pins 9&10 of connector PAP5 of AP board?  If NO, check regulator IC809 on the AP board.  If 9V is present;
  • Is there [5V] present on pin-8 of Q804 of TP842 of AP board?  If NO, check pin-2 of regulator IC808 or pins 6&8 of connector PAP2 of the AP board.

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