Power Board Checking Method - LG 50PW450 Service Manual

Repair Process-Reference data
PDP TV
Symptom
P811
▣ Checking Method
① Check soldering status on each major component.
② Check there is problem on major component or not by eye.
(CONDENSER, FET, IC, Resistor)
③ Check FUSE.
④ Check 5V,Va,Vs voltage
※ PSU Maker: 1) LGIT 2) LITEON 3) YUYANG
※ If happen Power board Protection,
check whether there is Short or Open on Y-SUS, Z-SUS B/D or not.
B. Power Problem

Power board Checking Method

Vs adjust
Va adjust
SC101
P813
A23
Making
Revision
Power B/D↔ Y-Sus B/D(P811)
PIN NAME
1 VS
2 VS
3 NC
4 GND
5 GND
6 VA
7 M5V
Va Voltage ADJ
Vs Voltage ADJ
전자 - 6-2
2010. 11. 16
A23
◆ Check 5V,Va,Vs voltage
: For Voltage specification,
refer to the PDP Module Label.
◆ Adjust Va,Vs voltage.
- value + value
Adjust way
ⓒ LG Electronics. Inc.2010