LG 50PT350 Service Manual page 63

Repair Process-Reference data
PDP TV
Symptom
▣
Half / partly display (or abnormal display)
-. Check Va input voltage.
(P121, P120, P220, P221, P320 : Power connector of the X board)
-. Check cables between CTRL board and X board.
-. Replace the X B/D.
-. Check TCP connection after X B/D replacement.
▣
Connections between panel and X B/D
-. Right display (Picture 1.) ↔ Check/replace right X B/D
-. Both ends display (Picture 2.) ↔ Check/replace center X B/D
-. Left display (Picture 3.) ↔ Check/replace left X B/D
A. Picture Problem
(Half picture) X- B/D Checking method(50R1)
Va Va
from CTRL
abnormal
Half
display
(abnormal)
abnormal
Partly
display
(abnormal)
※ Check connections (TCP - X board, CTRL board - X board)
Va
from CTRL
A18
Making 2010. 11. 16
Revision
Picture 1. Picture 2.
from CTRL
ⓒ LG Electronics. Inc.2010
전자 - 6-2
A18
Picture 3.