Panasonic TC-P42X1 Revised Troubleshooting Handbook page 19

Procedure to Isolate both SU & SD at the Same Time
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.
To isolate the SU and SD boards at the same time is not necessary to remove any
of the boards:
• Remove the 4 VF_GND screws (2 on the SU board and 2 on the SD board).
• Unplug connectors SC41, SC46, and SC42 on the SC board.
• Place the SC jig cable
• the SC board.
Note: If the SC jig is not available,
install a jumper between pins 1 and 2
of connector SC50 on the SC board.
(Remove the jig or the jumper after
completing isolation procedure).
When this is done, the display is
completely black (No picture)
Note: This procedure could be useful
when troubleshooting 7 blinks
problems.
(TZSC09187) between pins 1 and 2 of connector SC50 on
Slide #19