Converting CCFL to LED (*yet another thread)

Discussion in 'Panasonic' started by interestingfellow, Mar 11, 2019.

  1. interestingfellow

    interestingfellow Notebook Deity

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    I'm sorry for all the posts.
    I only have my pohne to do research on right now, as my 30's backlight is no longer working.

    I want to convert the backlight to LED and can not find a solid answer in the other conversion threads if we found simple driver solution for the LED's.

    I am looking at these leds and trying to figure out with what to drive them.

    I see there is a logic inverter and pull up resistor required to get dimming working.

    Also, I"m in hotels for another 3 weeks, thought I have most of the necessary tools with me to do the work.
     
  2. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    There may be a slight issue that the driver board you linked works from 9-30v.
    CF 30's use 5v to drive the ccfl board.
    LED's work more on current than voltage so it may not matter that much. Experiment and see.

    6a.jpg
     
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  3. interestingfellow

    interestingfellow Notebook Deity

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    Thank you!

    Is there a soirce for a more appropriate driver board? The link i posted can be here is 2 days (huge sellingbpoint for me)

    Trying to do refined ssuper specofic searches on my phone yeilds sucky results
     
  4. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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  5. interestingfellow

    interestingfellow Notebook Deity

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    iMuchas gracias, me ayuda mucho!

    Is there not a 12v-30v rail somewhere in the lid that can be tapped? Or, in the main chassis? My only concern would be a ground loop/etc.
    I'm assuming that the people here smarter than I have already looked at this idea, but it seems foolish not to ask.
     
  6. User32

    User32 Notebook Evangelist

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    Why not get a 30 Mk3 barebone instead?
     
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  7. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    Not in the lid. 5v only as far as I know.

    I can send electrical cartoon to you when I get home.

    If I understand correctly, the 9-30v driver will run on 5v but you will lose a little brightness. I might be wrong as I am not an engineer.
     
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  8. ADOR

    ADOR Evil Mad Scientist

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    I was thinking that as well as I scrolled down. The Mk3 is already upgraded from the factory. Just swap your ram, drive and other accessories over. Then you can sell your other stripped unit to get some of your money back. (just keep stuff like the power and usb port covers)
     
  9. interestingfellow

    interestingfellow Notebook Deity

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    Wait... I have an MK3...cf30ktpax2m

    Is that already LED? i thought it was ccfl? I'm having a hard time using my phone to do all this.

    How much are MK3 barebones units amd from where? I can fix this for will under $50.
    If I were to spend any more than that I would start looking at a 31 or FZG1. Plus the frugal bass turd in me can't stand the thought of not fixing an almost perfectly fine TB

    Thank you,all, again!
     
  10. SHEEPMAN!

    SHEEPMAN! Freelance

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    Remember to pull battery. There is a live wire in the lid that will pop fuses.
    Forgot where I read that.
     
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