LG Electronics LS70 Ch4. Symptom-to-part index „ LCD-related symptoms, Symptom / Error

Ch4. Symptom-to-part index

„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		FRU or action, in sequence
LCD screen becomes dark suddenly.	Check out Battery Miser.
Nothing displayed on LCD screen.	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.
LCD backlight not working.	1.	Reconnect inverter to the board connector.
LCD too dark.	2.	Replace inverter.
LCD brightness cannot be adjusted.	3.	LCD assembly.
	4.	System board.
LCD color cannot be adjusted.	1.	Reset all LCD connectors.
LCD screen abnormal.	2.	Replace LCD cable.
Characters missing pixels.	3.	LCD assembly.
LCD screen unreadable.	4.	System board.
Wrong color displayed.
Horizontal or vertical lines displayed	LCD assembly.
on LCD
Power-on indicator on, and a blank\LCD	LCD assembly.
during POST.	System board.

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