CF-28 Backlit Keyboard Does not Light Up

Discussion in 'Panasonic' started by SiliconTi, Jan 24, 2010.

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  1. SiliconTi

    SiliconTi Notebook Consultant

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    Hay All,

    I have just added an emissive chicklet keyboard to my CF-28, but it does not light up. I do have the inverter (aka Texas) board installed, and the photo sensor installed. Cables are installed correctly. Can anyone tell me what the voltage I should be reading from the red/white cable that connects under the keyboard from the inverter? I am getting 5v DC, but do not think this is correct.

    I have tried in a darkened room.

    Ideas?
     
  2. Springfield

    Springfield Notebook Deity

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    There are actually 2 different inverter boards. The more common one puts out a high voltage for the green emissive keyboards. That board has a large black coil on the back side (side with the 3 connectors), and 4 square white capacitors about 3/16" each on the front side (facing up as you install the board from the bottom of the computer).

    The other version of the board is made for the later model white emissive keyboards also used in CF-29. It has the same Texas shape but does not have the large black coil on the back and does not have 4 square capacitors on the front. It puts out 3~5 volts DC onto the red & white wires.

    Which version of the "Texas" board do you have?
     
  3. Toughbook

    Toughbook Drop and Give Me 20!

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    I told you Ken was the one to talk to!

    Silicone... If you have no inverter installed.... Where are you measuring voltage? If you have no inverter kit/setup like what Ken is selling in the BST side... You cannot use the emissive keyboard on the CF-28.
     
  4. SiliconTi

    SiliconTi Notebook Consultant

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    I do have an inverter installed. I'll have to see which one it is in the AM.
     
  5. Toughbook

    Toughbook Drop and Give Me 20!

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    Ahhhh.... Bach....

    (M.A.S.H. lovers will get that one!)
     
  6. mnementh

    mnementh Crusty Ol' TinkerDwagon

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    That's highly significant...

    mnem
    Suddenly feeling VERY old.
     
  7. Toughbook

    Toughbook Drop and Give Me 20!

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    I might have known you'd be the one!

    Now... For the Flintstones... When Fred as running for office or replacing someone's boss or something... He is given several things to say.


    The three phrase thing I need clarity on is (I think) when he is out he is told to spout three phrases... I think these are they but don't know and I always have a running debate with my sister....

    "Whose baby is that?"
    "What's your angle?"
    "I'll buy that!"



    Sorry for being of topic... But you know.. If it's MASH or the Flintstones.....

    <There's a place I know where the hipsters go called Bedrock! Twitch... Twitch>
     
  8. mnementh

    mnementh Crusty Ol' TinkerDwagon

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    I got nuthin.

    Never saw the show (except by accident); we didn't get ABC where I lived when I was old enough to see it in reruns.

    mnem
    "They were musicians."
     
  9. capt.dogfish

    capt.dogfish The Curmudgeon

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    You're really going to confuse a lot of people with that statement! In my high school years we only got ABC, WMTW from Portland, Maine. Their transmitter was on top of Mt. Washington so the signal made it into eastern Vermont.
    CAP
     
  10. SiliconTi

    SiliconTi Notebook Consultant

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    This is the version I have - so ToughBook, am I trying to use the wrong keyboard for this board? Do you have the white type keyboard?

    Springfield, do you have a Texas board for the blue keyboard? Will you exchange?

    Trying to get this going with the least expense - I've already got a couple hundred $$ in this machine more than it is worth.
     
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