Question about HP Pavilion dv1000 Notebook

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HP pavilion 1000 screen is black. I can not make out anything on the screen as the ccfl bulb is not lighting, I have changed the bulb, and tried two new inverters and nothing its really annoying me now any help would be much appreciated.

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  • y2kfarrell Mar 06, 2009

    If i till the screen to the light i can seen whats on it. And if i hook it to an external monitor and Fn key plus F4 i can see it fine on the external screen.
    At the other end of the inverter i should be able to get a reading when my multimeter is set to 1000kv and the ccfl bulb connected but i get nothing. I tested the cable from the mother board to the inverter for continuity and it is fine. Have tried 2 new inverters but no look so i am really confused to what it might be????


  • y2kfarrell Mar 06, 2009

    Dont know how to check the dimming circuit im sorry to say!
    Noticed that Fn keys all seem to work apart from F7 and F8 which controll the brightness.
    dimming potentiometer built into the screen dont think so?. where would it be?? dont see one unless there is one on the motherboard that can be manually adjusted. The problem seem to be from the motherboard to the inverter i.e no power.
    But i dont think it is a bad mother board or i wouldnt have anything being displayed on the screen


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If you are not getting anything on the display, it might be the display itself. Try to hook the computer up to an external monitor. If you get a display on the monitor (be sure to push the Fn key and the appropriate F key to switch displays), then it's your LCD screen. If there is nothing on the external display, your video card is bad. The video on this screen might be integrated into the motherboard.

Posted on Mar 06, 2009

  • Art Ellison
    Art Ellison Mar 06, 2009

    Obviously power is not getting to the bulb--or--have you checked the dimming circuit? The LCD is working or you would not be able to see anything. Your video card is OK. But you can dim or brighten the screen--is there a dimming potentiometer built into the screen?

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If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

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alejandro,

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.
Very similar to the Fluorescent lamps, (Bulbs), used in homes and businesses, but on a MUCH smaller scale.

HP Pavilion dv6000z series Notebook PC, is a general series designation. The EXACT model number is on the bottom of the laptop in a white Service Tag.

The HP Pavilion dv6000z series of Notebook PC's used either an LED or CCFL type of Backlighting.
Depends on which model it is.

http://www.screentekinc.com/backlight-ccfl-led-explained.shtml

As stated in the above information a Backlight is mounted in the back, or on the side of the LCD screen.
The LCD screen is composed of layers. These layers are held together by a metal frame which emulates a picture frame. If the Backlight is a side unit it will be held in place next to the layers, and inside the metal frame.

[Which means the LCD screen's metal frame, (LCD Panel Frame), needs to be opened on one side.
This will leave the layers which compose the LCD screen loose. The layers MUST be held in the proper placing when changing out the Backlight. Not an easy job to accomplish]

An Inverter is used to change the power coming from the laptop, to be used by the LCD screen, and Backlight.
90 percent of the time the problem is the Inverter.

The Inverter for the Pavilion dv6000z series of Notebook PC's is located inside the Display Assembly.

The Display Assembly is the
1) Display Enclosure Cover, (Plastic top of laptop),
2) LCD screen,
3) LCD Panel Frame, (Metal frame around LCD screen),
4) Display Bezel, (Thin plastic frame which surrounds the LCD screen in the front)
5) Camera Module
6) Inverter
7) Display Enclosure Cover Hinges (2)
8) Display Enclosure Cover Hinge Covers (2)
9) Wireless Antenna Transceivers and Antenna Cables
10) Microphone receivers and cables
11) Various mounting screws

[The Top Cover for a Pavilion dv6000z series Notebook PC is essentially the Palm Rest. The cover under the Keyboard]

With the Display Bezel removed the Inverter is located at the bottom.
(Display Assembly removed from laptop first)

HP Support > Pavilion dv6000z Notebook PC series> Manuals>Service Manual>

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&lang=en&product=3224052&

One example of an Inverter for an HP Pavilion dv6000z series Notebook PC,

http://www.amazon.com/DV6000-DV9000-V6000-INVERTER-AS0231721C1/dp/B00480MXUS

Please post additional questions in a Comment.
Regards,
joecoolvette

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1 Answer

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Where is the lcd bulb on a HP dv 1000 located?


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For info. and parts and DIY details check out this link :-
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Apr 02, 2009 | HP Pavilion dv1000 Notebook

1 Answer

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On my toshiba M105 the problem is the Tab welds at the top of the lcd itself. 1/3 of the screen is not usable but an external screen is perfect.

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