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My laptop hp pavilion ze4900 has a red very narrow line going from the top of the screen to the bottom of the screen and it also has a 4 inch gray color going from top to bottom as well as the normal white color on both sides. What do I do?

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Call the vendor for warranty support.

Posted on Jul 17, 2008

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1) The Pavilion dv9000 you're referring to is one of the Pavilion dv9000 series. The specific model number is on the bottom of the laptop, in a white Service Tag. P/N is Product Number. HP's model numbering system.

Just posted for future edification should you have problems with another laptop. All Model Numbers will be on the bottom of the laptop, HP or no.

2) I would like to start with a link to the Service Manual, for your Pavilion dv9000 series laptop.

On this page scroll down to - HP Pavilion dv9000 Notebook PC - Maintenance and Service Guide, and left-click on it.
This is a PDF file.
May take up to 30 seconds before you see the first page. Additional time to fully fully download.
(Took 18 seconds to see the first page, and no additional download time, for me just now. Medium speed DSL)

Agree. Your diagnoses leads me to believe the Display Cable (Wire) has a break in it.
Switch Cover removed, (Plastic strip on top of the Keyboard, and below the LCD screen, I referred to before), the Display Cable is the cable (Wire) to the far Left. (Long connector) The cable next to it on the right, is the Microphone cable.
(Short connector)

(Next cable going to the right under is under the Keyboard, {But not connected to the Keyboard}, is the Camera cable. The long cable coming from under the Keyboard, and going off to the far right top corner, is the Wireless Antenna cable.

Also check the Backlight cable. This is the cable on the right side of the LCD screen, and goes to the Inverter mounted inside, at the bottom of the LCD Top Panel Cover. (The Lid, in otherwords) When you state your display does not come up, I assume you have checked the LCD screen with a flashlight, to see if the problem is just the Backlight Bulb is not working. An LCD screen does not provide enough light by itself. Needs that type of Florescent light bulb, (CCFL. Cold Cathode Florescent Lamp), to fully illuminate the LCD screen.

If the Backlight Bulb cable has a break in it, you won't be able to see the display.

Good news?

Not much I'm afraid, unless you're really good at soldering, or HP does indeed still sell that display cable, if it's bad. It's a multi-wire cable.

The Display cable also goes down through the laptop, and connects to the motherboard. You have to almost completely disassemble the laptop, to get to the display cable's connection on the motherboard.

Laptops are disassembled from the Top going Down. You do not just remove the Bottom Cover.

Things I would like to suggest.
FOLLOW Anti-Static Precautions, before you go any further into your laptop. (If you aren't following them already)

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out Short Circuit) the delicate hardware components, inside a computer.

Relieve your body of Static BEFORE going deeper into that laptop.

With a desktop computer you just unplug it from power, and Touch the metal frame of the open computer case. The frame is made of steel.

The metal used inside a laptop is non-Ferrous. No Iron. Makes it so that the metal is non-magnetic. Also will not work for relieving your body of Static.

You can touch a doorknob to relieve your body of Static. The door better be within a one-step distance from where you're working. The movement of your feet, the rustling of your clothes, are 2 things that create Static.

Better method is to buy, and wear an ESD wrist strap, and connect the alligator clip to the metal frame of an open desktop computer case, unplugged from power.
[Electro Static Discharge. They run about 6 bucks)

In the PDF Service Manual ('Guide'), in the Bookmarks on the left side, scroll down to the section heading, Removal and Replacement Procedures, and click on the + sign to the left.

Now click on - 5.24 System Board. (Or Page 191 for the PDF page number)

Takes you through completely disassembling your laptop.

Check the Display Cable with a cheap multimeter set to Ohms. You are performing a Continuity Check of that cable. Wiggle the cable when checking with the multimeter.

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I have a HP Pavilion laptop ze4900. Every time I move th screen, the display either goes off completely, or it goes vey dim and I cannot read anything from it. The only thing I can do to get a display

You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering 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 replacing the CCFL lamp

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.
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