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Repair Process-Reference data
PDP TV
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)LG IT 2)Sanken 3)Lite-On
※ If happen Power board Protection,
check whether there is Short or Open on Y-SUS, Z-SUS B/D or not.
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B. Power Problem
Symptom
Power board Checking Method
Vs adjust
Fuse
▣ Checking Method
Making
Revision
Power B/D↔ Y-Sus B/D
Pin
P811
1
2
3
4
GND
Va adjust
5
GND
6
7
8
GND
9
M5V
10
M5V
Va Voltage ADJ
Vs Voltage ADJ
A23
2009. 2 . 1
◆ Check 5V,Va,Vs voltage
VS
→ For Voltage specification,
VS
refer to the PDP Module Label.
NC
Va
Va
◆ Adjust Va,Vs voltage.
+ value
- value
Adjust way
A23
LGE Internal Use Only
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