Panasonic TC-P42X1 Revised Troubleshooting Handbook page 28

SD Board Resistance Test
Preparation:
Disconnect AC Power prior to making any disconnection or connection.
Wait at least 2 minutes before the removal of any connector.
Note: 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.
Unplug connectors SD42, SD46 and SD11. Remove the 2 floating ground screws from the SD board.
Procedure:
Using a digital meter,
measure the resistance
between VF-ground
(Floating ground) and
pin 9 of connector SD42
on the SD board.
The normal resistance
should be approximately
2.1Mega-ohms.
Note: A low resistance
reading indicates a
defective SD board.
(All Models, Except TC-50PX14, TC-P50C1, TC-P50X1)
Slide #28