Question about HP Pavilion dv4000 Notebook

1 Answer

DV4000 lcd goes dim

My HP DV4000 has a strange LCD problem. When running on battery, it works fine, but as soon as I plug in the power adapter, it goes dim. External display works fine

Posted by on

  • dzuy Oct 26, 2008

    It's not the software nor the BIOS problem. It's more like a hardware problem because it happens even before the machine boots. I set the boot delay to the maximum 4 seconds (the laptop would display the splash screen for 4 seconds so you can hit F10 to get to the BIOS). But as soon as it turns on, I can see the splash screen for a split second, then immediately goes dim.

    It's not the backlight nor the inverter problem because it does work with battery. It only happens when it runs out of AC power. Perhaps when running on AC, too much voltage is sent to the inverter causing it to dim automatically? I wonder if anyone has seen this problem and has a remedy for it.


×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

Have you checked your power options in the control panel to see what they are set at? Has this always been a prob, or is it something that has just started?

Posted on Oct 26, 2008

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:

2 Answers

Dv4000 screen is on for a few seconds then goes black. Replaced screen balast and worked for 10 minutes, then went black again as before replacement. Should I replace the lcd screen?


No. The bulb is good. It could be the DC/DC invertor - that little curcuit board just beneath the in the LCD - or the video off the notebooks motherboard. - personal experiance points to that invertor

Feb 25, 2011 | HP Pavilion dv4000 Notebook

2 Answers

Approximately 5 weeks ago I started getting the message when on AC power that the "smart AC adapter is not providing enough power" (something like that anyway!) And even though plugged in would...


first, you need to try to power on your laptop with another battery with the AC adaptor plugged in. if your problem was not solved you need to check the power jack on your mothernorad.

Jan 02, 2011 | HP Compaq 6735s Notebook

1 Answer

The lcd won't turn on


Sounds like your video card is bad.

Jun 29, 2010 | HP Pavilion dv4000 Notebook

4 Answers

Laptop Screen goes dim when plugged in!!!!


Hold down the Fn key then press arrow key up or down.

Aug 10, 2009 | Gateway 450ROG Notebook

1 Answer

My HP Pavilion dv5000;s monitor is blinking!


This is a possible problem with the inverter that powers the back lighting panel or it could be the power adapter connector on the latop.
Wriggle the power connector which plugs into the laptop, if the LCD screen flickers then the power connector is faulty or needs resolderng (repairing).

Jan 28, 2009 | HP Compaq Pavilion dv5000z Notebook

1 Answer

My laptop will not boot up


Hi,
Try soft resetting the laptop .
1. Disconnect the Ac adapter
2. Remove the laptop battery
3. Press and hold the power button for 10 seconds
4. Reconnect the power adapter only and power on .
5. If the laptop starts fine , reinsert the battery back



Thanks
Proton

Jan 10, 2009 | HP Pavilion dv4000 Notebook

2 Answers

Acer 4520 light going dim


Normally the way it works is if you plug in your AC Adapter to a laptop the computer screen will Brighten up since its no longer running off of battery and is actually charging . The reason why it should go dim is when you unplug the Ac adapter it goes dim to save battery life and last longer. If you are getting a really dim you can check and make sure that the Ac adapter jack on the adapter or motherboard isnt loose and it could be having contact to the unit and be loose inside and every small movement causes it not to charge / charge in and out and would cause this Dim effect. Again this depends on how old the computer is and I dont really think its the LCD or backlight going bad but you can try to mess with the screen brightness and If im not mistaken on that model it should be the FN key and the Right > and Left < Key for lower and higher brightness. Give that a try and check the adapter connection and you can pin point the issue . Hopefully it doesnt come worst to worst which could be a bad LCD going bad or damaged lcd internal cable. Hope my answer helped guide you closer to a solution.

Aug 08, 2008 | Acer Aspire 5500 5570-2609 Laptop

2 Answers

HP DV9000 Display Works with battery not AC almost


Have you checked whether the Power Adapter of your Notebook is a 65 Watt or 90 Watt ??

If you are connecting a 65 Watt adapter with the Notebook, try wiht a 90 watt one from any other Notebook if available..

Notebooks with Nvidia Graphic card need a 90 Watt Power adapter to supply the adaquent power required for the Graphic Card and a 65 Watt adapter may not be able to supply the required power.

Aug 03, 2008 | HP Pavilion dv9000z Notebook

1 Answer

No power


Try purchasing an original adapter. I've had several machine of different make through my shop that the Targus adapter just simply won't run. For example, a Dell Inspiron 1100 and HP dv4000 won't run at all, and a Dell Latitude 1501 and Gateway crv503 will run but won't charge the battery. Targus adapters are junk, if you can, get your money back.

Jun 28, 2008 | HP Pavilion dv1000 Notebook

1 Answer

Nx 9010


Simply plug the ac adapter into the wall, the laptop will charge the battery itself.

Keep in mind this... in general, a laptop runs at full speed when it is plugged into the wall. When most laptops are running on battery, things are running more at 50% capacity to save on power, this giving you more battery life. A dimmer lcd and slowing the processor down when not needed are common traits.

You can use the FN key (function key) and the corresponding dim control on the keyboard to adjust the brightnedd of the backlight. It should be marked on your keyboard in a different color, like blue or maybe green (not familiar with that models keyboard).

 

Oct 21, 2007 | HP Compaq Business Notebook NX9010

Not finding what you are looking for?
HP Pavilion dv4000 Notebook Logo

156 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18381 Answers

Tony

Level 3 Expert

2598 Answers

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

Answer questions

Manuals & User Guides

Loading...