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  Acer Laptop Dark Screen Problems 
 Date Written 
A G Dec 31, 2005, 10:46am EST Report Abuse
I have a Acer Aspire 1313xc which has a dark screen. It works ok on a external monitor. I have changed the inverter board and the back light and it still doesnt work ! Can any tell me what the voltage should be going into the backlight ?

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gtjr_ph \\\\ Dec 31, 2005, 11:50am EST Report Abuse
check the wires near the hinge maybe some loose contact or improperly clipped

A G Dec 31, 2005, 01:40pm EST Report Abuse
All is connected ok. I have tested the voltage going into the board but am unsure what should be feeding the backlight!

Shadow_Ops_Airman1 Dec 31, 2005, 02:31pm EST Report Abuse
backlight may have died, call ACER and see if they can helpya out.

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jepanisa jepanisa Mar 20, 2007, 05:36pm EDT Report Abuse
>> Re: Acer Laptop Dark Screen Problems
check the little switch when you close the screen,its a hibernate switch
ive fixed it from the back with a needle,it was stuck

john albrich Mar 20, 2007, 09:40pm EDT Report Abuse
>> Re: Acer Laptop Dark Screen Problems
I'll assume you've verified that the backlight is indeed "off" and it isn't just that the pixels on the display are all blocking the light.

Laptops also have a position switch that turns the backlight on when the lid is raised, and off when it is closed. It might have failed. The switch may be mechanical, optical, or magnetic. An optical interrupter type of switch can be blocked into the "off" setting by debris.

Search Google for "lcd display backlight" and you'll see a number of companies that sell backlights too.

Backlight voltage is likely hundreds of volts. There may be more than one lamp. You can think of them as similar to the cold-cathode lamps used by people to "dress-up" their tower computers.

james davis May 21, 2007, 07:35pm EDT Report Abuse
>> Re: Acer Laptop Dark Screen Problems
Dark screens are usually caused by inverters or backlights. If you have changed both then you have a problem on the mainboard. can easilly repair this for you.

Ramesh Trehan Oct 27, 2007, 03:39am EDT Report Abuse
>> Re: Acer Laptop Dark Screen Problems
Thanks a lot jepasina. Your reply made me sort out my problem within minutes. I was struggling with this for a day. Thanks a lot again.

shamsher ali Nov 12, 2012, 03:07pm EST Report Abuse
>> Re: Acer Laptop Dark Screen Problems
dear all,,,
if your laptop shows a black screen than it is the problem in strip. you must change. if your laptop shows a dim display so change the operating software or Press Fn key with UP, Dawn, or Left, Right Arrow Keys. hopefully your display will be reset. and also check log off key which is under neath the screen. just move it... then problem will solve..



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