Dell XPS M1330 - Backlight not working

Bad inverter, there is a YouTube video on how to fix it if you are interested in doing so.


Dell XPS M1330 LCD CCFL Inverter Replacement How To Tutorial

The inverter or backlight on the display may have gone out. Connect an external VGA monitor to the laptop. If it works, then the display has a bad inverter or the backlight CCFL lamp went out.

It seems to be a power section problem. You need to visit the service centre.

It can be either the display is dead or it is a loose connection. If you are still covered by warranty then I would suggest you to contact the dell technical support. They will replace the part for you.
However if you don't have a warranty then you can buy this part from dell online store (the display) and you can fix it on your own - http://ahwee.com/how-to-disassemble-laptop-dell-xps-m1330 follow the instructions here to dismantle your laptop and refix it with the new parts. If you find any troubles doing so; please let me know; I will help you further.
Best Regards NextDoorNerd

Really does sound like a backlight problem. They usually don't cost much and are easy to replace if you are good with a screwdriver.

the back light has burnt out

could be bad backlight or inventer.

do you see picture but just no backlight?

it could also be a loose connection between the display and the motherboard.

how to replace your laptops backlight:
http://www.instructables.com/id/How-to-Replace-Your-Laptop_s-Backlight/

replace inventer:
http://www.instructables.com/id/Replace-LCD-Backlight-Inverter-on-Any-Monitor-for-/

start by checking for loose connection between the lcd and the motherboard.

This model laptop uses a CCFL lamp for the backlight, it does not use LEDs for backlighting.
The CCFL lamp is attached to an inverter which supplies high voltage to this lamp.
For details on how to install and or replace CCFL lamps go to
www.lcdparts.net for information and parts.

I assume you are not replacing the whole LCD screen.

if you bought this from dell, use the restore disks that came with it starting with disk one. you wont be able to save your files bt at least you will have a usable computer. i have an XPS studio 16 and had to do the same thing.

If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.