Panasonic cf-19 touchscreen problem

Discussion in 'Panasonic' started by zahar1968, Nov 15, 2011.

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  1. toughasnails

    toughasnails Toughbook Moderator Moderator

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    On here it says 15 post and then you can PM but most of the time after they update the forum the following day they can PM...I was told this by one of the mods this summer
     
  2. zahar1968

    zahar1968 Notebook Enthusiast

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    Thank you!
    I bought a touch screen driver Sub Board DFUP1605ZA
    package has not arrived
    Hoping easily repaired
     
  3. zahar1968

    zahar1968 Notebook Enthusiast

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    Yes, she is, Lada Samara 21099 :D
    Already sold it
     
  4. RuggedSolutions

    RuggedSolutions Notebook Consultant

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    I highly doubt its the controller board. I've been repairing Toughbooks
    for more then 6 years and have yet to see a bad controller in a CF-19
    or CF-18 for that matter. It's always a driver, panel or cable issue.

    Did you reseat the flat-cable a few times in the controller to insure
    good contact? I have had a 19 that had a break in the cable running
    through the hinge into the laptop cause the Touch not to work. But that is
    also quit a rare occurrence.

    Please post an update of your findings when the board arrives and good luck.
     
  5. Alex

    Alex Super Moderator

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    The PM minimum is currently at 5 posts
     
  6. zahar1968

    zahar1968 Notebook Enthusiast

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    I tried to reinstall the cable, the contact is good.
    I removed the keyboard and checked (tester) cable running through the hinge. Cable fully functional.

    What is the resistance between the contacts of the touch panel ? As for my picture? My tester showed 340 ohms

    Best Regards
    Vyacheslav
     
  7. RuggedSolutions

    RuggedSolutions Notebook Consultant

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    Ok, I don't know what the resistance needs to be on the contacts. But if you
    reseated the flat-cable and checked continuity from the main-board to the controller then it's quit obvious your panel is dead.
     
  8. Alex

    Alex Super Moderator

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    Dead panels are common on the mk-1
    Thats why I asked the question earlier

    The late model cf-18's had this same problem btw

    A panel is what you need
     
  9. RuggedSolutions

    RuggedSolutions Notebook Consultant

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    I've had 19's with only 50 hours on them that had bad panels. I have yet to have a broken controller board. Like you say Alex the late 18's and early 19's have this problem, just like the 29's and I have done a few 30's also. I see a pattern here. The ribbon on the replacement panels I have have copper cable instead of the silver like stuff on the earlier ones.
     
  10. unclemack

    unclemack Notebook Evangelist

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    Hi, @ Zahar1968 - sorry I cannot remember the resistances of the 4 contacts - but you should have a similar reading from the other 2 contacts.
    My CF-29 had around 200 Ohms across 1 and 3, less (maybe 80 Ohms?) across 2 and 4.
    Or the other way around... sorry, I'm getting old & forgetful.
    Good luck with the repair!
     
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