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.

    T400 Screen flicker

    Discussion in 'Lenovo' started by aamin, Jul 14, 2011.

  1. aamin

    aamin Notebook Enthusiast

    Reputations:
    5
    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    5
    My T400 screen is flickering every few seconds. (the display shakes horizontally). Also, decreasing the screen brightness makes it worse (i.e the shaking lasts longer). Appreciate any suggestions.
     
    aamin, Jul 14, 2011
    #1
  2. lead_org

    lead_org Purveyor of Truth

    Reputations:
    1,571
    Messages:
    8,107
    Likes Received:
    126
    Trophy Points:
    231
    happening on external LCD?

    also is your T400 a switchable graphics model?
     
    lead_org, Jul 14, 2011
    #2
  3. Bloker

    Bloker Newbie

    Reputations:
    0
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    5
    I have the exact same problem with my T400, decreasing brightness makes the problem worse (increase flickering).

    I have integrated graphics, all drivers and BIOS updated.

    appreciate any help! does the screen needs replacing??
     
    Bloker, Jul 24, 2011
    #3
  4. lead_org

    lead_org Purveyor of Truth

    Reputations:
    1,571
    Messages:
    8,107
    Likes Received:
    126
    Trophy Points:
    231
    does your T400 have CCFL or LED backlight.
     
    lead_org, Jul 25, 2011
    #4
  5. Bloker

    Bloker Newbie

    Reputations:
    0
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    5
    frankly i cant recall! how can i tell? the screen changes colors when viewed from different angles.

    it has 1280x800 maximum
     
    Bloker, Jul 25, 2011
    #5
  6. lead_org

    lead_org Purveyor of Truth

    Reputations:
    1,571
    Messages:
    8,107
    Likes Received:
    126
    Trophy Points:
    231
    lead_org, Jul 25, 2011
    #6
  7. aamin

    aamin Notebook Enthusiast

    Reputations:
    5
    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    5
    Just got back from abroad and now it is working fine for a week now (one day there was some flicker when on battery but was ok once I plugged in)

    My Display:
    42T0495 42T0496 14.1 INCH LCD DISPLAY FRU Yes

    Possible causes:
    1) While abroad I was using 240V and the problem was worse there. Improved the 2nd day after I got back?
    2) Due to shaking - took it with me on a african safari. Maybe a cable is loose?
     
    aamin, Jul 26, 2011
    #7
  8. strangesweet

    strangesweet Notebook Deity

    Reputations:
    44
    Messages:
    786
    Likes Received:
    0
    Trophy Points:
    30
    I sent my laptop to Lenovo due to flickering issue. They're replacing LCD and LCD cable. Costs $270 w/o warranty for X200. Fortunately, I have 3 year warranty so my laptop is covered.

    Will update once I receive the unit back.

    I have another HP laptop out of warranty that does this too (not being used). This seems to be okay at max brightness. But lowering brightness seems to make this laptop flicker.
     
    strangesweet, Jul 26, 2011
    #8