LG 50PT200 User Manual

YY--Drive Buffer TroubleshootingDrive Buffer Troubleshooting
HOW TO CHECK FOR A SHORTED BUFFER IC HOW TO CHECK FOR A SHORTED BUFFER IC
BACK SIDE
FRONT SIDE
Using the “Diode Test” on the DVM, check
the pins for shorts or abnormal loads.
BUFFER IC FLOATING GROUND (FGnd)
BACK
SIDE
FRONT
SIDE
RED LEAD On
Floating Ground
BLACK LEAD On “ANY”
Output Lug Reads 0.78V
Indicated b
y
white outline
y
Reversing the leads reads Open
8 Ribbon cables communicating with the Panel
’
s (Horizontal
FRONT SIDE OF Y-DRIVE BOARD
Any of these output lugs can be tested.
8
Ribbon
cables
communicating
with
the
Panel s
(Horizontal
Electrodes) totaling 1080 lines determining the Panel’s Vertical
resolution pixel count.
May 2011 50PV450 Plasma
94
Look for shorts indicating a defective Buffer IC

LG 50PT200 Specifications

General

Brand	LG
Model	50PT200
Category	Plasma TV
Language	English