LG 32LG30 - Troubleshooting

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TROUBLESHOOTING
1. Power-up boot fail
Check P700 All.
Voltage Level(5V, 12V, 16V)
Check Q706 Output.
Voltage Level(12V or 5V)
Check Power connector.
OK?
Yes
No
Yes
Check X100 clock.
12MHz
Replace Power board.
Replace Q706 & Recheck.
Yes
No
Check IC704 #2 Pin.
Voltage Level 2.6V
Yes
Replace IC704 & X100.
No
Replace X100.
No
2. Digital TV Video
Check RF cable.
Check Tuner 5V Power
IC710 #3 Pin
Yes
Yes
Check Check Demodulator Input Clock
X400(25MHz)
Replace IC710.
No
Check IF_P/N Signal
Yes
Bad Tuner. Replace Tuner.
No
Replace X400.
No
Yes
Check Mstar LVDS output.
Check IC400(LGDT) Output
- Ar401, AR402
Yes
Replace IC400.
No
Replace Mstar(IC100).
No