LG 50PC1DR Owners Manual - Page 46

Control Board

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Control Board 1. Check LED ( Normal status lighting or not ) 2. CHECK OSC X1 output. (100MHZ) 3. Check CTRL input voltage (CONNECTOR P10) 4. CHECK each FET 3.3V, 5V,1.8V., 2.4V OSC(X1) Check oscillator state. Be careful to avoid physical shock. Probe 3.3vdc Test point +5v GND Check FET's 1.8vdc Troubleshooting 100.0 MHZ 2.4vdc 5vdc Plasma Display Panel Troubleshooting - 2007 46 Input voltage

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46
Plasma Display Panel Troubleshooting - 2007
1. Check LED ( Normal status lighting or not )
2. CHECK
OSC X1 output. (100MHZ)
3. Check CTRL input voltage
(CONNECTOR P10)
4. CHECK each FET 3.3V, 5V,1.8V., 2.4V
Check oscillator state.
Be careful to avoid
physical
shock.
Probe
Test
point
Input
voltage
OSC(X1)
Check
FET’s
Control Board
Troubleshooting
+5v
GND
5vdc
2.4vdc
1.8vdc
3.3vdc
100.0 MHZ