Lcd-Related Symptoms - LG LS70 Service Manual

LCD-related symptoms

Note
Before removing or disassembling LCD, power off the computer, unplug all power cords from electrical
outlets, remove the battery pack also.
Symptom / Error
LCD screen becomes dark suddenly.
Nothing displayed on LCD screen.
LCD backlight not working.
LCD too dark.
LCD brightness cannot be adjusted.
LCD color cannot be adjusted.
LCD screen abnormal.
Characters missing pixels.
LCD screen unreadable.
Wrong color displayed.
Horizontal or vertical lines displayed
on LCD
Power-on indicator on, and a blank\LCD
during POST.
Ch4. Symptom-to-part index
Check out Battery Miser.
1. Check out Battery Miser.
2. Choose Never in the Turn off Monitor item on
Power Options Properties.
3. Check the power save mode switch if it is pressed
by something.
4. Check the System is in standby or hibernation
mode.
1. Reconnect inverter to the board connector.
2. Replace inverter.
3. LCD assembly.
4. System board.
1. Reset all LCD connectors.
2. Replace LCD cable.
3. LCD assembly.
4. System board.
LCD assembly.
LCD assembly.
System board.
34
FRU or action, in sequence