Question about PC Laptops

1 Answer

Compaq presario 900 lcd not working, shows faint image

The lcd is not working, and i can see the images on the screen faintly very faintly. the vga output to external screen works and i have a replacement LCD which also shows nothing but a faint image. what is the solution?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 306 Answers
Re: Compaq presario 900 lcd not working, shows faint...

Out put connection from the video card to the LCD monitor is loose or malfunctioning. check the connection that leaves the video card to the monitor, ensure its secure and clean, if still not working then its either the video card or the cable connecting to the LCD.

Posted on Dec 11, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Faint screen on laptop

Sounds like your LCD backlight is defective.
You will need to replace it

Jan 23, 2014 | PC Laptops

1 Answer

Laptop LCD screen has a faint image or is very dark and i checked Lcd,Invertor, video cable and its working properly . i don't know what to do pls help me.

Sounds like the backlight has gone. What is the make and model - you may be able to get parts or you may be looking for a salvage one.

Apr 10, 2012 | PC Laptops

1 Answer

Inspiron 6000 laptop - no pix on pc lcd but displays on a connected lcd just fine? unit seldom if ever closed.

Check first of all that the lid cut off switch is not sticking, temporarily disconnect this to be sure.
If you are getting an image on an external screen, the problem will most likely lie in two areas:


Take the laptop into a dark room and power it on. If you notice a faint image on the screen that is very dim, it is the fault of the screen backlight (replace the laptop screen)

If there is NO image even a faint one, it is the fault of the inverter (replace inverter).

To access both, you will need to remove the screen bezel, the battery and the switch cover panel. Getting the inverter off is a matter of unplugging it from the VGA cable and removing the pink and white HT wires to the screen ( NO power must be going through the laptop as you do this because the inverter converts the 19 volts DC into 1000 volts to power the screen.

Getting the screen off involves the above than unscrewing the cover retaining screws and the hinge supports and carefully undoing the vga ribbon cable

Jul 28, 2011 | Dell Inspiron 6000 Notebook

1 Answer

ACer Screen is pitch black, but system runs normally

Check if this will work on an external monitor, if it will, you can point the finger at the following:

  • Inverter failed: If you cannot see any image on the screen even a faint one, replace the inverter
  • Backlight gone: if you see a faint image on the screen, the screen needs replacing
  • Possible failure (unlikely) of the vga cable
If it will NOT work on an external monitor, the graphics chip on the motherboard has failed.

Jul 20, 2011 | Acer Aspire 55345410 Notebook

1 Answer

Compaq presario cq61 screen went dark but can still see window faintly through the dark sreen.

Look at the LCD screen very closely and check if you can see a faint image on the screen. It's possible that the LCD lid close switch stuck in the "closed" position and the back-light stays off even when you open the LCD screen or turn on the laptop. The switch turns off the back-light when you close the LCD display to save the laptop battery power.

If no luck, try to remove battery and drain the power, then replace battery and turn on.

If that didn't fix it then there are 3 things that could have gone wrong:

1. Video cable connection from inverter to LCD got loose. To check this, follow instructions from step 3 on how to open the LCD and check if cable is fitted properly.

2. The video inverter is faulty
The screen inverter failure is very similar to the back-light lamp failure. In both cases the screen gets very dark and the image on the screen becomes very faint, barely visible under a bright light. If it's still under warranty, take it for a replacement. You can replace this otherwise - you can find the inverter under the screen, follow the procedure described at point 3 to open up the screen.

3. The LCD monitor is faulty
If it works on an external monitor most likely the LCD is faulty and needs replacement. If it's still under warranty, take it for a replacement. If not, you can do it yourself, it's pretty easy. Remove the rubber covers on the side of the screen, unscrew the screws take the plastic cover off, disconnect the video inverter and put in the new LCD after you connect the video inverter to it.

Jan 06, 2011 | PC Laptops

1 Answer

LCD Screen is black

It could be either, if you can get another LCD screen (same make/model) you can swap to ckeck it out.
You could check the inverter by touching its output and if you get a bit of an electrical shock then you know the inverter is working or check it with a multimeter if you don't like electric shocks.

Dec 27, 2008 | HP Compaq Presario V2000 Notebook

1 Answer

Dead compaq laptop, no boot activity

Larnold..Sounding like you need to check the LCD Power Inverter Circuit board.. this is located inside the screen a long rectangular circuit board that sends power to the screen backlight & Display Panel.. Could also be a Bad Backlight.. Try Booting it.. Hold it up to a light and look closely at the screen.. If you see a faint image but no light, it is the Backlight, if Just Black No Activity then its most likely the Power Inverter, OR a Bad Video Card.. You can test the VIDEO by Connecting the laptop to a Computer Monitor or similar with the laptops VGA Serial port.. then Use your function Key and Switch to 2nd Display.....(one of your F keys.. ).. If it Shows up on another screen, Its a Display problem and not the video card... Hope This Helps alittle.. Cheers

Jun 02, 2008 | HP Compaq Presario V6000T Notebook

1 Answer

It's all black

If you power it on, take a flashlight and shine it on the lcd at and angle and look real close to see if you can see a faint image. If you can, then your backlight in the screen is not working.
Also, you can attatch an external monitor to it, while its off, then power it on and see if it lights the external monitor. Try that and let me know your results.
If you get a picture ok on the external, and you can see a faint image on the lcd using a flashlight, then it could be the backlight inverter board or the bulb itself inside the lcd went out.
If you don't get any picture at all, using an external monitor and can't see a faint image on the lcd using a flashlight, then I would say there's other problems with the laptop itself. Could be a mainboard problem, power issue, etc..

Oct 24, 2007 | Compaq Presario X1000 Notebook

2 Answers

My monitor isn't working

maybe the problem is connection cable between monitor n cpu, try to open n close your monitor. then try on again, if not u have to bring service center

Aug 14, 2007 | Compaq Presario R3000 Notebook

Not finding what you are looking for?
PC Laptops Logo

Related Topics:

339 people viewed this question

Ask a Question

Usually answered in minutes!

Top PC Laptops Experts


Level 3 Expert

18258 Answers


Level 3 Expert

5660 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Are you a PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides