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Laptop screen gone bad. ideas?

Discussion in 'Hardware' started by gosh1976, Apr 1, 2011.

  1. gosh1976

    gosh1976 Kilobyte Poster

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    I've been trying to get a compaq presario 2100 laptop to work. The LCD screen was very dim so I changed it out with a different used one - still the same result so I tried another one - still the same. Now when I first turn on the laptop the compaq splash screen comes up and you can see it just fine for a second then it dims. The fn2 key to brighten does nothing. Plugged into a monitor the video is fine on the monitor.

    Any ideas on this?

    I posted this elsewhere but I figured the more eyes that see it the better!
     
    Last edited: Apr 2, 2011
    Certifications: A+, Net+, MCDST, CCENT, MCTS: Win 7 Configuring, CCNA
  2. alexdc12

    alexdc12 Kilobyte Poster

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    the inverter is gone by the sounds of it
     
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  3. alexdc12

    alexdc12 Kilobyte Poster

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  4. gosh1976

    gosh1976 Kilobyte Poster

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    Forgot to mention that I took it apart at the hinges and replaced the entire casing and everything. Isn't the inverter usually behind the screen bezel?
     
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  5. alexdc12

    alexdc12 Kilobyte Poster

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    Yea thats it, when that goes that is what normally happens, the screen dims.
    Did the replacement screen work on the old laptop properly??
     
    Certifications: GNVQ Advanced IT, CompTIA A+, CompTIA N+, 70-680
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  6. alexdc12

    alexdc12 Kilobyte Poster

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    just lookin on google could also be the ccfl tube

    chances of them being gone in all the screens is to much of a coincidence tho
    :blink
     
    Certifications: GNVQ Advanced IT, CompTIA A+, CompTIA N+, 70-680
    WIP: 70-685, ITIL v3 Foundation
  7. gosh1976

    gosh1976 Kilobyte Poster

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    it did when it was put in the storage room who knows how long ago! Surely I don't have 3 bad screens or inverters.
     
    Certifications: A+, Net+, MCDST, CCENT, MCTS: Win 7 Configuring, CCNA
  8. alexdc12

    alexdc12 Kilobyte Poster

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  9. gosh1976

    gosh1976 Kilobyte Poster

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  10. alexdc12

    alexdc12 Kilobyte Poster

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    other pages are saying f10 and f11 aswell
    some say check for loose connections to the tube
     
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    WIP: 70-685, ITIL v3 Foundation
  11. alexdc12

    alexdc12 Kilobyte Poster

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    another user put
    Below the upper right hand corner hinge, there the is a slot.
    Stick a straight paperclip into it and poke it around to move the stuck part. Worked for me. I thought the screen was dead for a month!
     
    Certifications: GNVQ Advanced IT, CompTIA A+, CompTIA N+, 70-680
    WIP: 70-685, ITIL v3 Foundation
  12. gosh1976

    gosh1976 Kilobyte Poster

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    On the screen I have on there now if I wiggle it back and forth I can get it to light up. I don't really see that it's moving the wires that much but I guess I need to take the bezel off and see if something is loose.
     
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  13. alexdc12

    alexdc12 Kilobyte Poster

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    thats it then its loose wires, maybe the person who took all them screens off dislodged the wires all the time!
     
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  14. soundian

    soundian Gigabyte Poster

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    Do you see the POST screen on the external display?

    EDIT: Sorry, stupid question. I'm sure you've tried toggling between display options. Weird one though, all the data points to the hardware being OK (POST screen shows) and software as the issue (it goes dim at the point where it hands over to Windows).
     
    Last edited: Apr 2, 2011
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  15. gosh1976

    gosh1976 Kilobyte Poster

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    It didn't always go dim at the same time (once I changed screens again) - some times it was dim from the beginning/ sometimes it would get almost to the desktop and the external display looked fine so I had ruled out a software issue. Turns out it was a loose wire and it's working fine now. Thanks for the help guys
     
    Certifications: A+, Net+, MCDST, CCENT, MCTS: Win 7 Configuring, CCNA
  16. alexdc12

    alexdc12 Kilobyte Poster

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    glad to help :D
     
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  17. soundian

    soundian Gigabyte Poster

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    Ah. Makes sense if it doesn't go at the same point all the time.
     
    Certifications: A+, N+,MCDST,MCTS(680), MCP(270, 271, 272), ITILv3F, CCENT
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