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    LED vs Fluorescent backlight

    Discussion in 'Lenovo' started by professor2, May 1, 2009.

  1. professor2

    professor2 Newbie

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    How can I verify that I have an LED backlit screen on my T400?
     
    professor2, May 1, 2009
    #1
  2. Alvin.C

    Alvin.C Notebook Guru

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    Hello,

    What is the type and serial number of your T400, and what resolution size screen do you have - 1280x800 (WXGA) or 1440x900 (WXGA+)?

    You should be able to do a warrantly lookup and there, a parts lookup, to discover the main parts for your thinkpad.
     
    Alvin.C, May 1, 2009
    #2
  3. professor2

    professor2 Newbie

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    thanks Alvin, but still unsure. My type is 2764 CTO with S/N L3B8592. When I look at the warranty info, it just says Lenovo LCD screen, but is it LED backlit?? I looked up the part numbers given, and no more detail.

    My resolution is 1280 x something, and I did order the LED, but it just does not quite look right.

    Wayne
     
    professor2, May 1, 2009
    #3
  4. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    I heard that the back of led backlight screen gets hot after a while on, when florescent stay cooler.
     
    Tinderbox (UK), May 1, 2009
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  5. professor2

    professor2 Newbie

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    After a bit of searching on the web, I found the part number; it looks like the screen part number (42T0581) is actually a CCFL backlit and a very cheap screen (less than $100). This really p***es me off that they would try to slip this to me with the hope I might not notice.

    Wayne
     
    professor2, May 1, 2009
    #5
  6. StealthTH

    StealthTH Notebook Evangelist

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    If you ordered it with LED you should give support a call.
     
    StealthTH, May 1, 2009
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  7. grtvrm

    grtvrm Newbie

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    Edited later: OK after reading this again I found my LCD

    42T0691 42T0692 14.1 INCH LCD DISPLAY FRU NO


    Professor, how did you find the info. I looked in the regestry it says LGD0190 in monitor properties. I got it today and this supposedly LED LCD is not much better than my old n cheap Acer 5580 LCD. How can it be?

    I know there may be high pitch invertor noise if it's not a LED, do not want to dismantle it yet just to find out... Please advise, people
     
    grtvrm, May 2, 2009
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  8. tonynca

    tonynca Notebook Enthusiast

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    Who told you this? I think it is completely the opposite. I have a Samsung LCD HDTV and their LED TV and the LED TV is wayyyyyyy cooler.
     
    tonynca, May 3, 2009
    #8