Read LG 50PQ100R-ZA (CHASSIS:PP91A) Service Manual online
Making
Revision
2009. 2 . 1
PDP TV
Symptom
Repair Process-Reference data
Power board Checking Method
A23
B. Power Problem
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.
▣ Checking Method
Va Voltage ADJ
- value
+ value
Adjust way
M5V
9
NC
3
VS
2
VS
1
Va
6
GND
5
GND
4
M5V
10
GND
8
Va
7
P811
Pin
Power B/D↔ Y-Sus B/D
◆ Check 5V,Va,Vs voltage
→ For Voltage specification,
refer to the PDP Module Label.
Fuse
Vs Voltage ADJ
◆ Adjust Va,Vs voltage.
Vs adjust
Va adjust
A23
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