On my xps the lcd backlight wont turn on? - Dell XPS M1330 Notebook

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

what you describe is a backlight failure in the LCD

farooq473, replace the Inverter.

1) An LCD screen cannot produce enough light by itself. A Backlight is used to help provide the needed light.

2) An Inverter is used to provide power for the LCD screen, and the Backlight.

An Inverter boosts power up for the LCD screen, and lowers it for the Backlight.
90 percent of the time a bad Inverter is the problem.
A Backlight usually goes out all at once, Inverters slowly 'die'.

Dell Support > XPS 1210 Notebook PC > Service Manual,

http://support.dell.com/support/edocs/systems/xpsM1210/en/SM/index.htm

In the list click on > Display
Now click on Display Panel.

Dell doesn't show, and describe how to replace the Inverter.
When you click on Display Panel, you are looking at an exploded photo showing the Display Panel removed.
Scroll down to the next small illustration.
Has 1, 2, 3, 4, and 5 pointing to the Display Panel.

5 shows you a pull tab to release a flat cable from the Inverter. The Inverter is the small circuit board to the left of the pull tab.

This is not advertising for this website. Just an example to show you what the Inverter circuit board looks like.
(Screen Inverter)

http://www.battery-adapter.com/product_info.php/products_id/3450

This is Not a Dell XPS 1210 Notebook PC. It is a guide for replacing an Inverter in a Dell Inspiron 1525 Notebook PC, but I wanted you to have photos, and instructions for the basic procedure.
After you have repaired over 100 laptops, you'll realize that they all have the same basic procedures.
Just different parts.

http://www.insidemylaptop.com/replace-lcd-screen-inverter-dell-inspiron-1525-laptop/

3) Be SURE ALL power is removed from the laptop before you start.
Remove the AC adapter (Charger) and Battery.

4) You should follow Anti-Static Precautions implicitly. It would be best if you bought, and wore an ESD wrist strap. (Electro Static Discharge) Connect the alligator clip to a good ground source.
(For example, I connect to the metal frame of an empty desktop computer case)

The cost averages from $3 to $12.
A $3 ESD wrist strap will do just fine.
This is an example of an ESD wrist strap,

http://www.amazon.com/Cables-Unlimited-ACC-1400-Static-Grounding/dp/B000EDMPQK

5) Use a multi-compartment container for the various screws you will remove.
Label each container for the area the screws came out of.
You DO NOT want to mix them up!

You can use a clean egg carton in a pinch. Label each egg holder.

Have questions post in a Comment.
Regards joecoolvette

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.

You may need a new laptop screen or there could be just a loose connection. The backlight could also need replacing.

I would take it into a repair shop and see what they suggest. New screens and backlights can be found on ebay and most repair shops will offer discount if you supply the new parts

Regards
1234s282

I had a similar problem with a one year old Dell laptop, and it turned out that the screen was OK on battery power, but when you plugged it in to the AC charger the screen went very dark. It turned out to be the LCD backlight inverter, which I purchased from a fellow in Florida for about $16 and installed by following the instructions at http://www.insidemylaptop.com/remove-replace-lcd-screen-video-cable-inverter-on-dell-laptops/ . Hope this helps you out a bit...

You have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, 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. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out; usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.ladparts.net

If you are having issues with a backlight I would check the lcd inverter first. It is usually 20 dollars on ebay. I would avoid contacting dell as they are no help to people that are out of warranty.

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 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.