Su Board Isolation Procedure - Panasonic G20 Series Troubleshooting Handbook

To isolate either the SU or the SD board individually, all
the connectors, (Except the panel flex-cables) and the
VF-GND screws on the board have to be removed.
(See the picture below)

SU Board Isolation Procedure

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.
SU board Isolation Procedure
1. Remove the 2 VFG screws from the SU board.
Note: The 2 screws on the SD board should be
installed.
2. Remove SC41/SU41 and the ribbon cable
between the SU and SD boards (SU11/SD11).
Note: SC46 and SC42 should be connected
3. Install the SC50 Jig or just jump pins 1 and 2 of
connector SC50 on the SC board.
Note: Remove the jig or the jumper after
completing the isolation procedure.
Actual SC50 Jig
Slide 40