Panasonic plasma

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  • kotel studios
    Samsung LC32HG70QQUXEN - vertical and horizontal stripes across the screen
    by kotel studios
    Hi,

    Just now my Samsung LC32HG70QQUXEN monitor gave up on me. On cold boots I get many vertical stripes going across the screen (see the attached picture). After it runs for 1-2 minutes those go away but there are horizontal stripes going across the whole screen no matter of the input and PCs I use. (couldn't take an picture of it since the image size goes to 20MB and the camera doesn't pick them up)

    In a video about a 27" monitor with an similar issue the guy removes one resistor and supposedly the entire monitor goes back to life? For sure this fix is only temporary....
    08-06-2025, 02:07 AM
  • halen
    Hisense H55U7B vertical stripes
    by halen
    Hi all,

    I have Hisense H55U7B TV with no picture, only big vertical stripes. I did several tests and I'm not sure, where is problem.

    1. Connected tcon to 12V, white, red, green, blue, black picture visible in cycle on full LCD without error
    2. Connected only left side of LCD to tcon, big stripes
    3. Connected only right side of tcon, visible normal picture on the right. Working as expected.

    Where could be problem?

    Tcon RSAG7.820.7932/ROH
    Main board RSAG7.820.8698/ROH

    Jan
    06-18-2025, 03:58 AM
  • jm1234
    Panasonic plasma TX-P42ST50 - 6 blinks
    by jm1234
    Hi,
    anyone able to provide the service manual for old plasma Panasonic TX-P42ST50E?
    It turns off almost immediately (0~5 seconds after pressing the on/off button) and starts flashing the red diode 6 times.
    I disconnected the left-hand side board (SC?, both the ribbon cable and the power cable to it) and also another ribbon going to bottom left board. Then the led signal is 8 flashes. According to service guide to another Panasonic plasma it would mean the left-hand side board is faulty. But I'm not sure it 100% applies to my model.
    I checked that board for any obvious faults...
    05-22-2024, 06:59 AM
  • stecos
    Panasonic Plasma main board repair (ST30 GT30 VT30 ST50 GT50 VT50),LED with 3 blincks
    by stecos
    Hi everyone!
    I happened several times, in the search for help from the web, to consult this very interesting forum.
    So I decided to sign up and I intend to participate actively by making available my knowledge and experience on the subject, I'm a new user but at the same time I'm old in the sense that I have 4 decades of experience in repairing and designing electronics but above all I'm a great passionate about the subject.

    Having said that I come to the gist of my post on the forum as the title suggests.
    For my passion for technology I'm now collecting several...
    11-28-2022, 11:39 AM
  • ahoonid
    MacBook A1990 vertical stripes on external screen
    by ahoonid
    Hey everyone,

    I bought a MacBook A1990 with no screen. I bought it knowing the motherboard was defective but wasn't sure what the problem was until I received it. It actually turns on but as you see from the attachment, it has vertical stripes, on an external screen!!

    The board is neat. Not opened before for sure. Just a little dust, nothing more.

    Recovery using wifi can be opened, as can also be seen in the photo but it doesn't go all the way through after connecting it to a wifi. It downloads the initial Recovery files but never completes the rest of the...
    06-20-2025, 08:54 AM
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