Hardware Analysis Community Forums http://www.hardwareanalysis.com/content/topic/53454/ 2008-10-12T19:07:18-05:00 http://www.hardwareanalysis.com/content/topic/53454/ http://media.hardwareanalysis.com/halogo.gif text/html 2007-10-27T07:39:50-05:00 Ramesh Trehan http://www.hardwareanalysis.com/content/topic/53454/?l=1#516059 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. text/html 2007-05-21T23:35:14-05:00 james davis http://www.hardwareanalysis.com/content/topic/53454/?l=1#493538 Dark screens are usually caused by inverters or backlights. If you have changed both then you have a problem on the mainboard. <a class="ext" href="/action/r/http://www.LatopRepairs.co.uk" target="_blank">http://www.LatopRepairs.co.uk</a> can easilly repair this for you. text/html 2007-03-21T01:40:19-05:00 john albrich http://www.hardwareanalysis.com/content/topic/53454/?l=1#481722 I'll assume you've verified that the backlight is indeed &quot;off&quot; and it isn't just that the pixels on the display are all blocking the light.<br /> <br /> 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 &quot;off&quot; setting by debris.<br /> <br /> Search Google for &quot;lcd display backlight&quot; and you'll see a number of companies that sell backlights too.<br /> <br /> 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 &quot;dress-up&quot; their tower computers. text/html 2007-03-20T21:36:02-05:00 jepanisa jepanisa http://www.hardwareanalysis.com/content/topic/53454/?l=1#481677 check the little switch when you close the screen,its a hibernate switch<br /> ive fixed it from the back with a needle,it was stuck text/html 2005-12-31T19:31:14-05:00 Shadow_Ops_Airman1 http://www.hardwareanalysis.com/content/topic/53454/?l=1#365779 backlight may have died, call ACER and see if they can helpya out. text/html 2005-12-31T18:40:32-05:00 A G http://www.hardwareanalysis.com/content/topic/53454/?l=1#365762 All is connected ok. I have tested the voltage going into the board but am unsure what should be feeding the backlight! text/html 2005-12-31T16:50:09-05:00 gtjr_ph \\\\ http://www.hardwareanalysis.com/content/topic/53454/?l=1#365741 check the wires near the hinge maybe some loose contact or improperly clipped text/html 2005-12-31T15:46:37-05:00 A G http://www.hardwareanalysis.com/content/topic/53454/?l=1#0 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 ?