Panasonic CF-20 Dark screen

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • HKS00
    New Member
    • Mar 2023
    • 4
    • USA

    #1

    Panasonic CF-20 Dark screen

    Hello all,

    Just curious if anyone has any experience with Panasonic CF-20 Tough books? I am running into an issue with a couple of my units that after they are left on the charger and "go to sleep" they would not respond to any inputs to wake them up. I am assuming that they are going into standby but even with the feature disabled the screen goes dark after a while. When this happens there is no way to wake the computer up. All the lights remain on and the unit is on but the screen remains off no matter what. The only way to fix it is by doing a hard restart and all the functions return to normal until the unit is left on the charger for a while again. Below is a video showing the issue. Thank you in advance!


    https://www.youtube.com/watch?v=pBk9MIE90O8
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: Panasonic CF-20 Dark screen

    LIDSW# checked?

    Comment

    • HKS00
      New Member
      • Mar 2023
      • 4
      • USA

      #3
      Re: Panasonic CF-20 Dark screen

      Originally posted by mcplslg123
      LIDSW# checked?
      Hello thank you for the response. I am sorry for my lack of understanding but I assume you are reffering to the lid Switch? and yes that has been ruled out.

      Comment

      Related Topics

      Collapse

      • Rozp
        70LE660U dark cloud or black screen with sound.
        by Rozp
        Hello Everyone,

        This is my first post so I will try to be as precise as possible without making this post too long winded. Unfortunately I don't have pictures of the original problem but I included images of the TV internals.

        I have a Sharp 70LE660U. The problem started a few months ago with the bottom row looking out of sync and was dark on the left side and then fading to transparent on the right side. Shortly after, a dark cloud appeared in the center of the screen. The dark cloud started small and shaded but the image was visible. It also affected the menu area....
        08-29-2023, 05:25 PM
      • Chrissygizmo
        Samsung UE55JU6800K half screen dark
        by Chrissygizmo
        Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
        I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
        02-10-2025, 12:33 AM
      • Ryan.man
        Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
        by Ryan.man
        Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

        My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

        This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
        02-04-2025, 12:23 PM
      • Chrissygizmo
        Panasonic TX-48CX350B backlights but white screen , blank screen
        by Chrissygizmo
        Hi all, I’ve got a problem I hope someone can help me fixi.
        I have a Panasonic TX-48CX350B tv , it powers up ok but the screen is blank, the backlights are working, there’s nothing else though, no picture or sound. I’m not sure what the fault is called whether it’s BLANK/ BLACK/ or WHITE SCREEN I’ve actually came across this before on a similar tv but just ended up scrapping it, I will upload pictures of the boards etc , if anyone could help me I would really appreciate it...
        01-11-2025, 03:18 PM
      • Alicat
        Panasonic Plasma TH-50PZ85U No screen No blinks on red power light
        by Alicat
        Hello,

        Stopped by this site trying to fix my parents Panasonic Plasma TV.

        Model number is TH-50PZ85U

        Power comes on and the red power light stays on solid.

        Did a few checks like hold the power button on for 60 seconds, hold the - Volume while holding the menu button, no luck, still@ blank grey screen as the screen lights up very vague.

        I also hear a few clicks.

        I also think my parents said there was a thunderstorm and the TV failed after that.

        Section 6 in the service manual talks about power and no screen,...
        10-30-2024, 10:09 AM
      • Loading...
      • No more items.
      Working...