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XD1034 4K white dots in 4K image

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Morten Lindegaard
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I have a 4K SONY TV and I can't get good 4K from a XD1034 to the tv.

I've downloaded the "4K Full Screen Presentation" 4K30p and 4K60p demoes (from https://www.brightsign.biz/support/demos/xd-demos) and both gives me small white dots especially in dark shadow- and some bright areas.

The only comparrison I have available is an AppleTV that sends fine to SONY @ 3840 pixles width (NO white dots anywhere). So it's not the TV or the cable, I assume.

The XD1034 is running firmware 7.x.x.x and should be good I hope.

Are there any obvious things I could try (that I haven't thought of yet)?

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    Brandon

    Do the dots appear in the same position all the time, or do the flicker around?  The latter is usually caused by signal loss.  How long is the HDMI cable?  If it's longer than 5 meters (16.5 feet), see if it happens with a shorter cable - you might need a signal booster, distribution amplifier, or transceiver to successfully drive the signal at length.

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    Friendly reminder, the community forum is intended for user-to-user discussion.  It is not regularly monitored. For troubleshooting problems and to ensure a timely answer from a BrightSign representative, please submit a support ticket

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    Morten Lindegaard

    Thank you Brandon

    My HDMI cable is 1 meter long. The flickering is not static - it moves around but somehow mostly in bright and dark areas.

    The cable has printed "High Speed HDMI with ethernet" but I am not 100% sure that it is HDMI 2.0 (but I strongly assume that it is). I'll try and find another cable and see if that helps.

    I am still puzzled about why appleTV looks right and XD1034 does not though (same tv, same cable)

  • 0
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    Brandon

    There's generally a minimum target, but signal drive level varies by device design.

    Shimmering white dots does sound like a signal issue.  It could also be caused by interference.  Try relocating the BrightSign player and HDMI cable run away from nearby electronics, especially power supplies/transformers to see if that changes things.

    If you have another BrightSign player it would be good to try swapping them to isolate whether it's a signal/cable issue or something specific to that player.

    _________________________________________________________________________
    Friendly reminder, the community forum is intended for user-to-user discussion.  It is not regularly monitored. For troubleshooting problems and to ensure a timely answer from a BrightSign representative, please submit a support ticket

  • 0
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    Morten Lindegaard

    Hello again

    I now have a new HDMI 2.0 cable (1 meter) and it makes a difference! The white dots are almost gone. But not completely gone though. And a thing I didn't mention before is random white lines flashing. Typically one at a time, full-left to right of the screen, very quickly. Not at the same time in the video. And not at the same height of the screen either.

    Just for the sake of speculation: I have tried two different Class-10 sd-cards (and I downloaded the demo twice).

    I only have XD1033's at hand for alternative playback. Should I expect they can perform at full 4K?

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    Brandon

    White lines can also be signal-related.

    XD1033 should be able to play the same content.

    Are you using a North America or Europe model TV?

    _________________________________________________________________________
    Friendly reminder, the community forum is intended for user-to-user discussion.  It is not regularly monitored. For troubleshooting problems and to ensure a timely answer from a BrightSign representative, please submit a support ticket

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    Morten Lindegaard

    EU TV :)

    Does it make a significant difference in 2022? (I would think the PAL/NTSC-days were over?)

  • 0
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    Brandon

    EU TV :)

    Does it make a significant difference in 2022? (I would think the PAL/NTSC-days were over?)

    I dream of that day, but it's definitely not today...  TVs still cling to their regional divisions.

    The demo presentations are published output so they're forced 30p or 60p.

    It would definitely be good to test some UHD/4K content in a presentation set to 25p or 50p output to confirm that the player hardware is working properly.  The artifacts you're seeing may be in part due to the higher pixel clock and conversion happening at the display.

    _________________________________________________________________________
    Friendly reminder, the community forum is intended for user-to-user discussion.  It is not regularly monitored. For troubleshooting problems and to ensure a timely answer from a BrightSign representative, please submit a support ticket

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