Question about Dell Inspiron 6400 Notebook

2 Answers

Screen dead as a dodo - and its not inverter or backlight - HELP

Hi, and thanks in advance for any assistance.
In a nutshell:
Out of warranty
Screen dead.
Video card is ok as external output to monitor works.
Have changed both the inverter, cable and backlight and still no joy.
What else could it be? How can I test inverter or backlight?

Cheers

Posted by on

  • Sean  Hughes
    Sean Hughes Aug 07, 2008

    Cheers for reply. Cant be motherboard. There is an image on the screen itself , problem is the backlight does not light up. I have tried 2 other compatible inverters, the vid cable and changed the backlight but no joy.
    I know its a process of elimination but dont know how to test the voltage getting through to the inverter or to test the backlight?




×

2 Answers

Many thanks, will give that a go now and let u know how i get on

Posted on Aug 07, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,028 Answers

Only two things left. The screen itself or the connection on the motherboard. I believe the problem is going to be with a dead screen, so, replace the screen. If this doesn't do it, then I'm afraid the motherboard connection may have failed, and I'm sure you know what that means.

Posted on Aug 07, 2008

  • Ryan Rogers
    Ryan Rogers Aug 07, 2008

    On the inverter, you should be able to test it with an ohm meter. The inverter boosts the power from the board, back up to the level required by the screen, I couldn't tell you the exact voltage, only that on the screen side of the inverter the voltage will be comparable to the power of the wall outlet. The backlight can't really be tested, it either works or it doesn't when power is applied. Don't completely rule out the motherboard connection yet, I've had machines through my shop that seemingly had an inverter issue, that turned out to be that the pins in the motherboard connector that the inverter receives power through via the screen ribbon/cable, were damaged or corroded. Cleaning the corrosion from the pins fixed several, but the ones with damaged pins i had to get new motherboards for.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The picture and sound come on then a few seconds later the picture goes off to black screen and sound stays on can you help please


hi,
Is there is any light in the screen at the time picture gose. If not, then Backlight inverter is faulty. All lcd tv have backlight to light the pixels. If you watch the screen very near then you will be able to see image on the screen. First of all check is there is any budged capacitors in the power supply. If there then replace it will solve the problem. If no then check the inverter board. Do on thing check the fuse in the inverter board. If the fuse is faulty then replace it. If the fuse blews again then the inverter board is short you have to replace invereter baord. It is not possible to repair the backlight inverter. You have to replace the board with a new one.Have added the picture of inverter board and budge capacitor for your reference. If you need any more assistance feel free to contact me by Fixya.



ajin_g_97.jpg ok

Sep 19, 2011 | Televison & Video

1 Answer

My screen intermittently goes blank (without lighting). I can see that there is something displayed and a connection to an external monitor shows that everything is working fine. I've disassembled the...


I've seen this problem time and time again. Replacing the inverter fixed it every time. HOWEVER it could always be the CCFL backlight as well. Both fortunately are VERY inexpensive. Changing the inverter is easy but the CCFL will be a little harder. Take your time and remember how to put it all back together and you'll save that $100. I'm sure it's either of those two that's causing the backlight issues. NO NEED to change the entire LCD.

Aug 22, 2011 | Acer TRAVELMATE 8371-944G25 LAPTOP LCD...

1 Answer

20/02/11 Dear Sir/Madam. I got my Dell Inspiron B130 from a relative almost three years ago. Last week I turned on the laptop but noticed only a quick flash on the monitor then it was completely...


you can not buy a back light on its own you would have to buy a screen or an inverter its best to take it to a computer shop where they will test the screen and inverter and say what is faulty

Feb 20, 2011 | Computers & Internet

2 Answers

My flat screen Poloroid TV went black, it hissed and cloud of gas or smoke escaped from the back of the TV and now I have no picture just sound. Is it dead?


No troubleshooting needed for this issue. Check the tv's warranty then call the manufacturer to get this tv replaced or fix. If tv's out of warranty you still need to call the manufacturer to ask where is the closest Service center that can fix your tv.

Sep 09, 2010 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Can't get anything on LTV 40w1 HDC- blue screen only-------------


Hi


Thanks for using FixYa. From what you have described it seems that you might have a backlight inverter board issue with this TV set. The inverter is the power supply source for the backlights. There could also be a screen driver problem; if it is then you have to change the entire inverter board. All this is only recommended if you have some kind of expertise for checking the internal circuitry of the TV as these units have high voltages running even when the set is switched off. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Jun 19, 2010 | Westinghouse LTV-40w1 HDC 40.02 in. LCD...

1 Answer

We have Westinghouse LCD TV model number is LTV-32w1 and the problem is that screen is black though we hear the sound of the channels of our Direct TV service. Does it mean that it is broken or still may...


Ur tv have a dead electronic's board known as a LCD inverter backlight board.Replaced this LCD inverter backlight board,u will get the picture back.Tries Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.It a long in shape board.

Mar 09, 2010 | Televison & Video

2 Answers

D600 Latitude laptop - LCD showing ghost/dim images


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

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

Dimimage and/or dark display on the laptop's LCD screen indicates a faultyLCD backlight and it could be the inverter that supplies high voltageto the CCFL lamp or it is the CCLF lamp is nearly burnt out or burntout, 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.
Thank you Sir, Have a nice day.

Sep 19, 2009 | Dell Latitude D600 Notebook

2 Answers

Does acer warranty applies on acer v193w's backlight?


Warranty booklet says: 3 years - parts
3 years - labor
3 years - backlight

May 09, 2009 | Acer V193w LCD Monitor

1 Answer

IBM THINKPAD SCREEN DEAD


Hi,

Since you have replaced the inverter and the unit works with an external monitor, then probably problems would be with:
  • CCF lamps (backlight);
  • inverter triggers and/or B+ supply.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Nov 11, 2008 | IBM ThinkPad T23 2647 Notebook

1 Answer

Backlight Problem


You are lucky it works at all. The system board has been compromised.

Jul 30, 2008 | HP iPAQ hw6515 Pocket PC

Not finding what you are looking for?
Dell Inspiron 6400 Notebook Logo

Related Topics:

271 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18381 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2017 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...