DM800HD Web Interface image ok -TV no image

Discussion in 'DM800HD Hardware troubles and Repair support.' started by lorept, Nov 5, 2018.

  1. lorept

    lorept New Member

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    Hi. I have a very strange problem with my dm800 , i enter in my dm without anyproblem , i surf trough the menu and switch channels without any kind of problem but when i put on any channel i get audio , i see that is decoding the channel but no image ( i tried with DVI-HDMI and with scart ) but nothing.

    Funny is if i enter in the web interface i get the image with vlc
    Anybody can help with a solution?

    Thanks
     
  2. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Maybe a interruption, between the u20 center pin to the R181/197 or related to it.

    [​IMG]
     
  3. lorept

    lorept New Member

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    and i need to change something on the mainboard? thanks
     
  4. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Just as the picture shows about the u20 center pin, check the connection from the U20 center pin to the resistors, and check the resistors etc.
    So also check the voltages to/from it etc.
    In any case, when there is a issue in that sector then it gives a same problem as you describes.

    An other picture which shows the same about the u20, and more is this.

    [​IMG]
     
  5. lorept

    lorept New Member

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    thanks , i will see with somebody that can solve this , im not so advanced on electronics
     
  6. lorept

    lorept New Member

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    hi , i checked this mainboard with another tuner and i confirm the same issue , tuner ok and maybe how you said here its something faulty on the mainboard , i will try to solve the problem when i have a bit of time.

    thanks
     
  7. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Okay, good luck with it.