Problem with resolutions in HDMI-PC mode

  • 2017. year UHD Ambilight TV third time went to service for repair

    and i had to connect Dell 2007WFPb with native resolution 1680x1050

    in few resolutions picture is microscopic rectangle on the top left corner

    1366x768 - NOK

    1024x768 - OK

    800x600 - NOK

    640x480 - OK


    screenshot (all) in web-if gives full size picture