LG 50PS80 Training Manual page 105

TCP 3.3V B+ Check
TCP 3.3V B+ Check
For Connectors P101, P102
and P104 on the Control
board, see Control board
section.
Red Lead On 3.3V (0.42V)
Black Lead On 3.3V (0.62V)
This also test IC100, IC200 and IC300
Left X PWB P110
Warning: DO NOT attempt to run the set with the
Heat Sink over the TCPs removed.
Checking IC304 for 3.3V, use center pin.
IC304
0V
3.3V
5V
3.3V in on Pins 57 ~ 60 on any connector
Center X PWB P210
105
3.3V for TCPs
IC304 on
Control Board
Right X PWB P310
All Connectors to All TCPs look very
similar for the 3.3V test point. The
upside down L trace at pins 34 and 35 of
each connector.
Example here from P204. You can only
check for continuity, you can not run
the set with heat sink removed.
August 2009 Plasma 50PS80