Question about LG enV VX9900 Cellular Phone

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Front lcd screen not working

The front lcd screen is not working now. there is a slight backlight, but thats all i get now. the interior screen works just fine. Had the LG enVvx9900 just about a year now.

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  • 2 more comments 
  • nozdo Nov 27, 2008

    I have the same problem but both screens are not working.

  • Anonymous Dec 08, 2008

    same problem. but the main screen works.

  • Anonymous Jan 19, 2009

    The information I needed was how difficult and what is neccessary to to open up and fix the envy

  • soka-san Feb 27, 2009

    All of my features work fine, and the internal screen functions normal, but the outer screen glows black.  It happened once before and power cycling brought it back to life.  This time however it hasn't.  It had not been dropped for the first one but it was dropped for the second one.  Issue occured hours after drop.

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There is a magnet inside the plastic of the case the sixe of a lego mans hand. it tells the other side when the phone is closed by closing a contact. It may be damaged.

Or the front screen seperated from the inside screen and wont work. This can ghappen from dropping it or hard impact.

You have to take it apart and make sure its pressed together riht. It can be difficult.

Posted on Nov 19, 2008

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Posted on Jan 02, 2017

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My averatec laptop will only power on to a black screen but it still sounds like its booting


1) Laptop on use a flashlight, and shine it at the LCD screen. Shine at various angles.
Do you see faint images?

2) You can also plug in a VGA monitor to the back of the laptop, (Laptop OFF, monitor off), and toggle over.

(It can be a VGA monitor that looks like a small TV {CRT}, or an LCD flat screen that has a VGA cable attached)

Plug the VGA monitor's cable into the blue VGA port on the left side, of the Avertec 3200 Notebook PC.
(Example of VGA connectors,

http://en.wikipedia.org/wiki/VGA_connector

Turn the VGA monitor on. Give it time to 'come to life'.
Turn the laptop on.

Are there graphics on the external monitor? If not press, and hold down on the Fn key, (Blue Fn next to the CTRL key), then tap the F2 key.

(The F2 key is the toggle over key for an external monitor. You can use the laptops LCD screen, or it's screen, and an external monitor)

Graphics show on the external monitor? Your graphics chip is good.

Problem is with the screen Inverter, or the Backlight.

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

A screen Inverter is used to convert the electricity from the laptop, for the LCD screen, and the Backlight.

90 percent of the time the fault is the screen Inverter.

The Display Assembly essentially is;

1) Top cover of the laptop. (Display Cover)
2) LCD screen
3) Display Bezel. (Thin plastic frame in front of the LCD screen, and surrounds the LCD screen)
4) Inverter
5) Backlight
6) LCD screen frame

With the Display Bezel removed, the screen Inverter should be at the bottom/front.

This is an example of a screen Inverter for an Averatec 3200 from a quick search,

http://www.laptopaid.com/averatec-3200-lcd-inverter-board-76-030105-02-tested-1629.html

I haven't worked on an Averatec 3200 Notebook PC before. I have worked on 100's of other laptops.
The sequence for removing the Display Bezel follows a pretty standard approach.

Looking at the Display Bezel I see four screw covers. (I'm looking at a PDF Users Guide)

One at the top Right corner, one at the top Left corner, one at the bottom Left corner, and one at the bottom Right corner.

These screw covers made of a rubber-like material. (Synthetic rubber) They are slightly rounded on the top. They have a type of rubber cement that holds them in place.

I use a computer pick to gently pry them off. If you carefully pry each screw cover off, and set them down sticky side up, (Screw side), you can usually reuse them again.

Screw covers (4) removed, use a Philips head screwdriver, and remove all 4 screws.

The Display Bezel will still be held in place. It has plastic tabs on the outside edges that snap into the Display Cover. (Top cover of laptop)

A fingertip is used on the INSIDE edge of the Display Bezel, next to the LCD screen.
(WATCH your fingernails against the LCD screen)

The fingertip raises the Middle/Inside edge of the Display Bezel, just slightly.
Now use another fingertip on the opposite side. Raise the Middle/Inside edge.

The Display bezel should start 'popping' out. (As the plastic tabs release they make a popping, or snapping sound)

To illustrate this technique further,

http://www.insidemylaptop.com/replace-damaged-lcd-screen-dell-latitude-e5400-e5500-laptop/

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

(One more, to show you where I believe the screen Inverter is for the Averatec 3200 Notebook PC, and what an average screen Inverter circuit board looks like,

http://www.insidemylaptop.com/remove-screen-inverter-dell-studio-1737-1735-laptops/

When the Display Bezel is loose, you slide it to one side a little to ease it around, and off, of the cover latch.

The cable connectors going to the screen Inverter are shaped differently from each other, so that when you go to reinstall them, there is no chance of mixing them up.

With the tools you have available, I would replace the screen Inverter ($7 plus shipping), and see if this repairs the problem.

If not the problem is the Backlight. Most of the time you have to buy the LCD screen, as the Backlight is an integral part of it, and should be replaced by a professional.

[ An LCD screen is composed of layers. The layers are held together in the correct alignment by the LCD screen frame.
This alignment MUST be aligned as it was from the factory.

This gives you an example of replacing a Backlight,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

Make a mistake here, and you can throw your LCD screen in the trash ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Aug 21, 2011 | Averatec 3200 Notebook

1 Answer

I replaced the lcd screen. Now when the my camera is turned on i have a black screen with nothing on the lcd. Not even a menu display. I have pushed the lcd ribbon as suggested but no luck. Need advise....


The backlight is not turning on, it's the smaller of the two ribbon cables on the LCD assembly.

Make sure you have a backlight on your new LCD (not everybody sells it with the backlight!) or reuse your old backlight with the new LCD.

Check the backlight cable, is it ripped? Even slightly? If so, you need a new backlight.

Thomas Drayton
Owner Darntoothysam.com
Affordable Digital Camera Repair

Aug 03, 2011 | Canon PowerShot SD870 IS Digital Camera

1 Answer

I have a 3090 e system laptop but the screen dosn't work


I think its backlight issue, Relace neon.bulb near of lcd.

Dec 19, 2009 | Computers & Internet

1 Answer

Backlight on screen doesn't work. I can see an


It's usually the inverter...not the backlight.

You need to take off the front lcd bezel and look below the lcd, that's the inverter. Match up the part numbers with another one on ebay, swap it, and you're good to go.

Probably cost you 10-20 bucks.

Nov 21, 2009 | Toshiba Satellite L25-S119 Notebook

2 Answers

Screen Half darker


It sounds like your backlight isn't working properly. LCD screens have backlights that illuminate the colors produced upon their surfaces, so that you can easily see the screen without an external light source. In your case, it sounds like your backlights either aren't cailbrated, are damaged, or were produced unevenly.

There is most likely not a fix for this, though most all LCD screens have some form of light distortion. My own LCD screen is slightly brighter around the edges, where the backlights are located, but this is only noticeable when displaying a completely black screen.

Jun 22, 2009 | LG 22" FLATRON LCD Monitor

1 Answer

No display


The LCD backlight is most likely faulty. If you look at the LCD screen to one side you could see a slight video image, provided the video card is working. To check if the video card is working connect the laptop's video output connector to an external monitor and then boot up your laptop. If you get an image on the monitor, then the problem is with the laptop's LCD display.
As I stated it could be the backlight or a faulty invertot that powers the backlight or it could be the cable/s that connects the LCD to the motherboard.
Try reseating these cables (requires dismantling the laptop).
If this doesn't work then you have a faulty LCD and needs to be replaced. Alternately if cost is too expensive, just use the laptop with an external monitor.

Jan 20, 2009 | Dell Inspiron 1501 Notebook

2 Answers

Dell 24


That's because if I recall right, Dell just rebrands another company's monitors. It's an easy job to replace the backlight tube but it's also an easy job to accidentally crack the whole screen when you get in there. But if you open it up, you might be able to find the part number of who ever makes that screen. Any similar size backlight will work. Check in such places as Electronix.com and Partstore.com with the real maker of the LCD.
Not a whole lot of help, but hopefully better then nothing..........

Apr 26, 2008 | Computers & Internet

3 Answers

Very, very dark (almost black) lcd screen, but is functional


The LCD viewer is made up of the LCD screen, and the backlight. Your backlight is burnt out, or the circuit board isn't sending power to it. Backlights can be replaced separately.

Sep 04, 2007 | Logitech ClickSmart 420 Digital Camera

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