Question about PC Laptops
My dell inspiron 1520 went dark. It is behaving like the backlight burnt out but replacing the light didn't fix it. I can plug in another monitor and it works. The screen flickers on start-up but doesn't light up, I can see the images are there but no light.
I just "fixed" a 1520 that had a similar problem. The screen would go dark at odd times and would always go dark if the power adapter was UNplugged. After upgrading the bios, chipset and video drivers with no improvement I started fooling with the power settings.I found that setting screen brightness to anything less than 100% when on battery power caused a totally dark screen on battery power. Definitely some kind of bug and running with 100% brightness on battery will reduce battery life but I got it working. I think the bug was apparent after some recent updates. It could be the O/S or drivers. YMMV
Posted on Dec 02, 2009
If you replaced the backlight and you still have the same problem then the next step you should take is to replace the inverter.
That should solve your problem, if it doesn't let us know.
Posted on Mar 04, 2009
This would be a good time to replace your screen. Or spend alot of money having the backlight changed. There is really nothing you can do other than that.
Posted on Mar 04, 2009
Hi, I have a Dell Inspiron 1520 Windows XP and a black screen issue, but when the AC power adapter is PLUGGED. While running on battery only it stays from 2 to 3 hours, but as soon as I plug it in, it dies out in 5-10 minutes. The above description of the issue is pretty similar (the programs are working, and the blacknes is almost total). Closing the lid and booting it again brings the laptop back to life, but you can't really call it a normal use when you have to stop working in order to feed it.
I downloaded a GeForce driver recommended by Dell, but it didn´t help. I am afraid it is a firmware issue...Or you think I could apply the settings recommended by STURKE?
Posted on Jan 29, 2010
Actually i have the same problem i think its a short from where you connect the lug if you jiggle that the light comes on for some reason so forsure its a short
Posted on Sep 07, 2009
I've not a solution as such, I just want to detail my backlight issue, initially I was solving it by using the fn & the crt f8 key, pressing twice to return it back to laptop screen, this worked for a while, I've noticed that on flat battery, it seems alot worse, also that on use of the dvd drive that this seems to aggravate it dramatically, the laptop is operating perfectly and with an external monitor has no problems, this also seems to relieve the problem slightly. Logically, I'd suspect that this a power problem, - excessive usage creates the drain on the backlight and subsequent failure. I'm doubtful that changing the screen will have any effect although that of course is the next step as I see it, I think , if possible I'll look into whether a non shiny screen might use less power. also I'm intrigued by the possibility of reflashing the bios and the possibilty of reflashing with another dell bios of a similar screened sized dell model, possibly playing with fire but what the hell, this problem seems widespread, which, with no specific fix highlighted here and so many working on it that maybe more drastic measures may well be the way forward, - I bet it'll work perfectly on windows 95
Posted on Oct 14, 2012
I have found this to be a recurring fault on the motherboard with this fault. I was having the same problem with a customers machine and changed the Inverter, screen cable and screen to no avail.
Posted on Mar 18, 2011
If you actually have a problem, it might not be the backlight. Always try the inverter. Then if that doesn't work try the backlight.
Posted on Dec 31, 2009
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