The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Black Screen

    Discussion in 'Toshiba' started by Hakvin, Jan 23, 2012.

  1. Hakvin

    Hakvin Newbie

    Reputations:
    0
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    5
    I know this is a common problem, and I have read solutions and watched many youtube clips on how to fix it. But nothing have worked for me.

    When pressing the power button, everything seems to start up. The screen flickers and even works for about half a second, then, blackness. Its not completely dead, I can see very fainted when holding the screen close to a lamp. When plugging in an external monitor, it works.

    I have tried:

    Removing battery and start up with just the AC
    Removing both battery and AC-power and waiting many hours
    Switching slots for my two memory sticks
    another wall-socket
    Checking the lid close-switch if its dirty etc (this could prevent the computer from waking up from sleep-mode)

    Any other suggestions would be much appreciated.
    /John
     
    Hakvin, Jan 23, 2012
    #1
  2. 1994F7PT

    1994F7PT Notebook Evangelist

    Reputations:
    247
    Messages:
    354
    Likes Received:
    0
    Trophy Points:
    30
    what laptop is it? has it got a discreet graphics card? i would guess as the external display does the same that the graphics card is fubar
     
    1994F7PT, Jan 23, 2012
    #2
  3. Hakvin

    Hakvin Newbie

    Reputations:
    0
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    5
    its a Toshiba Sattelite. Not sure which modell, but its from 2007-2008.
    Yes its a discrete graphics card. Radeon HD 2400
     
    Hakvin, Jan 23, 2012
    #3
  4. alexUW

    alexUW Notebook Virtuoso

    Reputations:
    1,524
    Messages:
    2,666
    Likes Received:
    2
    Trophy Points:
    56
    Sounds like the backlighting is shot [inverter]. Try hooking your laptop to an external monitor to verify the screen/inverter is bad; if external monitor also has display problems then could be GPU.
    Is it similar to this video ?: IBM ThinkPad T43 - Backlight problem - YouTube

    You may find the replacement part here from NationalParts, an authorized Toshiba distributor. If it is just the inverter, then only the inverter should need to be replaced, the LCD screen should be ok.
    Epson, HP, Toshiba, Konica Minolta, Canon Parts & Accessories - National Parts Depot


    Good luck and keep us posted with any results.
     
    alexUW, Jan 23, 2012
    #4
  5. 1994F7PT

    1994F7PT Notebook Evangelist

    Reputations:
    247
    Messages:
    354
    Likes Received:
    0
    Trophy Points:
    30
    alex, he's tried external monitor, 3rd one down in the list of stuff tried, hence its probably and issue with the Radeon
     
    1994F7PT, Jan 24, 2012
    #5
  6. Hakvin

    Hakvin Newbie

    Reputations:
    0
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    5
    Tried an external monitor again and it worked! (Wierd)
    Sorry about that.

    Alex, yes its very similar to that video. So what I need to do now is to replace the inverter?

    Thank you all for answering
     
    Hakvin, Jan 24, 2012
    #6
  7. alexUW

    alexUW Notebook Virtuoso

    Reputations:
    1,524
    Messages:
    2,666
    Likes Received:
    2
    Trophy Points:
    56
    Opps, I missed that you tried the external monitor, but it looks like it worked the second time? [try again to verify].
    If an external does work, then it's most likely the inverter. If external does not work, then it's the GPU like 1994F7PT mentioned.
     
    alexUW, Jan 24, 2012
    #7
  8. Hakvin

    Hakvin Newbie

    Reputations:
    0
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    5
    External monitor works. :) Now official.
    Thanks
     
    Hakvin, Jan 24, 2012
    #8
  9. 1994F7PT

    1994F7PT Notebook Evangelist

    Reputations:
    247
    Messages:
    354
    Likes Received:
    0
    Trophy Points:
    30
    thats good news!

    in that case back to alex's diagnosis! :)
     
    1994F7PT, Jan 26, 2012
    #9