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Terrestrial television, no picture, there is a sound decoder on the TV

rychu9191 37758 14
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 20405595
    rychu9191
    Level 5  
    I have a Samsung UE49K6370SS TV, everything was working 2 days ago. Currently, I have TVP1 TVP2 TVP3 available and the remaining channels have a black screen, only a loudspeaker in the middle and there is sound, no image. I scanned the channels again and still the same. I use the built-in decoder. On the second old TV with an external decoder, everything works and there is only one antenna for reception. Terrestrial television, no picture, there is a sound decoder on the TV
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  • #2 20405621
    kaz69
    Level 37  
    Try changing the country to Sweden.
  • #3 20405633
    internick
    Level 36  
    rychu9191 wrote:
    ...everything was working just 2 days ago...


    This is a 2016 TV with DVBT2 support but no H265 codec support:

    https://www.displayspecifications.com/en/model/0e0c780

    The switchover happened a long time ago, so these two days are probably a misunderstanding: https://emitel.pl/refarming/harmonogram-przelacen/

    And you receive MUX3, because it can broadcast in DVB-T until the end of this year: https://www.uke.gov.pl/akt/mux-3-bedzie-mogl-nadawac-w-standardzie-dvb-t-do- konca-2023-r-,419.html
  • #4 20405789
    TELMOR_PL
    Level 32  
    I agree with my colleague @internick
    Requirements for DVB-T2 receivers:
    DVB-T2 reception,
    HEVC compression support (H.265),
    1080p resolution, preferably 4K,
    E-AC-3 audio support,
    HBBTV support recommended.
  • #5 20405936
    rychu9191
    Level 5  
    So I have to buy a new decoder?
    And why do TVP1 TVP2 TVP3 work and the others not?
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  • #6 20405958
    TELMOR_PL
    Level 32  
    You don`t need much knowledge to guess... why this particular MUX-3 has such a privilege...
    In any case, it has time to switch to the DVB-T2 HEVEC system by the end of this year and will certainly do so at the end of December.
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  • #7 20405971
    LeDy
    Level 43  
    From what I found this
    Quote:
    DVB-T2 (HEVC), DVB-T (MPEG-4), DVB-S2, DVB-C, analog

    2016*
    Quote:
    K6370, K5672, K5572, KS98, KS95, KS90, KS80, KS75, KS70, KU66, KU65, KU65, KU64, KU61, KU60
    * Devices marked as compliant with the DVB-T2 Ready standard (previously used for older TV models). The devices receive content broadcast in the DVB-T2/HEVC standard.

    Here
    Quote:
    Tuner :D VB-T (MPEG-4), DVB-T2, DVB-S2, DVB-C, analog

    but without HEVC.
    MUX-8 still works in the old system.
  • #8 20405985
    internick
    Level 36  
    rychu9191 wrote:
    So I have to buy a new decoder?

    Maybe write when it actually stopped working.
    Tell us where you are from.
    And let me know what frequency you receive MUX8 on this TV.
    And also the rest of the MUXs on the external decoder.
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  • #9 20405995
    TELMOR_PL
    Level 32  
    @internick why do you need to know on what frequency the author of the topic receives MUX-8?
  • #10 20405996
    rychu9191
    Level 5  
    Yesterday it stopped working, the day before yesterday all channels were working. The town of Kleczanów in the Świętokrzyskie Voivodeship
    How to check these MUX?
  • #11 20406019
    LeDy
    Level 43  
    You are within range of two transmitters. Saint Krzyż and Machów-MUX-1, 2, and MUX-8.
  • #12 20406033
    rychu9191
    Level 5  
    So what`s wrong?
    The second TV has an external decoder and everything works there, but only on the Samsung one with a built-in decoder it does not work, and both TVs are connected to one antenna. There is no new TV software update.

    Added after 7 [minutes]:

    Everything works, I restored the TV to factory settings, scanned it again and everything works
  • #14 20800458
    interiorfinish22
    Level 1  
    Thank you for the tip on this website. I fought for a very long time to receive all the programs. I restored the factory settings, set the country to Czech Republic, and searched for programs again. Everything flies :) Thank you once again.
  • #15 20958126
    tomnowy123
    Level 1  
    >>20405621
    I had a similar problem, actually changing the country/region to Sweden helped, then I returned to the previous setting of Poland and the image came back. Thanks for your help 👍
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Topic summary

✨ The user experienced a loss of picture on their Samsung UE49K6370SS TV while retaining sound on certain channels. After troubleshooting, including rescanning channels and checking the built-in decoder, the issue persisted. Responses indicated that the TV lacks HEVC codec support, which is necessary for receiving certain channels due to the transition to DVB-T2 broadcasting. Suggestions included changing the country setting to Sweden or Czech Republic, which ultimately resolved the issue after restoring factory settings and rescanning channels. The user confirmed that the second TV with an external decoder continued to function correctly, highlighting the compatibility issues with the built-in decoder of the Samsung TV.
Generated by the language model.

FAQ

TL;DR: If your Samsung UE49K6370SS plays audio but shows black video, 1 multiplex (MUX‑3) stayed DVB‑T while others moved to HEVC; “This is a 2016 TV with DVB‑T2 support but no H.265 codec support.” This FAQ helps Polish terrestrial TV viewers fix sound‑only issues and decide on decoders. [Elektroda, internick, post #20405633]

Why it matters: It guides you to a quick fix or the right DVB‑T2/HEVC decoder so you don’t waste time or money.

Quick Facts

Why do I have sound but no picture on terrestrial TV channels?

Polish DVB‑T2 uses HEVC video and E‑AC‑3 audio. Your TV decodes the audio but lacks HEVC video decoding. That produces a black screen with sound. The tuner still finds and plays channels. Add a DVB‑T2/HEVC set‑top box if the TV cannot be fixed by settings. [Elektroda, TELMOR_PL, post #20405789]

Do I need a new decoder for my Samsung UE49K6370SS?

Try a factory reset or a region switch first. If DVB‑T2 channels remain black, your unit lacks HEVC decoding. Then use an external DVB‑T2/HEVC decoder to restore video on refarmed multiplexes. Keep your current antenna and cabling. They are usually fine. [Elektroda, TELMOR_PL, post #20405789]

Why do TVP1, TVP2, and TVP3 still show video but other channels are black?

These are on MUX‑3, which was allowed to remain DVB‑T. Only one multiplex (MUX‑3) stayed DVB‑T through 2023. Other multiplexes refarmed to DVB‑T2/HEVC, which your TV may not decode. That’s why some channels work and others don’t. [Elektroda, internick, post #20405633]

How can I fix this quickly with a factory reset?

Follow this 3‑step fix:
  1. Run a factory reset from the TV’s Self Diagnosis or Reset menu.
  2. Select country/region and run an automatic channel scan.
  3. Verify all multiplexes and channels display video. This restored full reception for the original poster. [Elektroda, rychu9191, post #20406033]

Will switching the TV country to Sweden bring back the picture?

Yes, several users reported success. Change country/region to Sweden. Run a full channel scan. Then you can switch back to Poland and keep the image. This refresh toggles codec and broadcast settings on some Samsung K‑series sets. [Elektroda, tomnowy123, post #20958126]

Can changing the country to Czech Republic help?

Yes. One user solved video issues by restoring factory settings, setting country to Czech Republic, and rescanning. After the scan, all programs worked. This suggests region presets can influence HEVC handling on certain models. [Elektroda, interiorfinish22, post #20800458]

What does "DVB‑T2 Ready" on older Samsung models actually mean?

It was a legacy label. Some sets had DVB‑T2 tuners but lacked HEVC decoding. In that edge case, you get audio only on HEVC broadcasts. MUX‑8 can still work because it uses the older system. [Elektroda, LeDy, post #20405971]

How do I check which MUX I’m tuned to and the frequency?

Open the TV’s channel information or signal diagnostics to read the frequency. Compare those values with your external decoder’s MUX list. Share exact frequencies when asking for help. Helpers often request MUX‑8 and other MUX frequencies to verify reception. [Elektroda, internick, post #20405985]

I’m in Kleczanów (Świętokrzyskie). Which transmitters cover me?

You are within range of two sites: Święty Krzyż and Machów. Expect coverage for MUX‑1, MUX‑2, and MUX‑8 from those directions. Align your antenna accordingly if needed. [Elektroda, LeDy, post #20406019]

Do audio codecs matter here, or only video?

Both matter. Poland uses E‑AC‑3 for audio. Without it, you could see video but hear nothing. Your case shows the opposite: audio works but video doesn’t because HEVC is missing. Quote: “E‑AC‑3 audio support.” [Elektroda, TELMOR_PL, post #20405789]

Can I fix this without a firmware update?

Yes. Users restored video by changing country to Sweden, rescanning, then returning to Poland. No firmware update was needed. This refresh reinitializes broadcast tables and codec handling. Try it before buying hardware. [Elektroda, tomnowy123, post #20958126]

Why did it stop working "yesterday" if the refarming was earlier?

The refarming happened earlier. The impression of a recent change can be misleading. You likely watched MUX‑3, which stayed DVB‑T, and only later tried DVB‑T2/HEVC channels. Then the issue became apparent. [Elektroda, internick, post #20405633]

My second TV with an external decoder works fine. What does that indicate?

Your antenna and signal are okay. The external decoder supports DVB‑T2/HEVC, so it shows all channels. The Samsung’s internal decoder or configuration lacks HEVC, causing sound‑only on HEVC broadcasts. [Elektroda, internick, post #20405633]

What are the exact requirements to receive all Polish DVB‑T2 channels?

You need DVB‑T2 reception with HEVC (H.265) video and E‑AC‑3 audio. 1080p resolution is required, 4K is preferable. HBBTV support is recommended. Expert note: “Requirements for DVB‑T2 receivers: DVB‑T2 reception, HEVC compression support (H.265), … E‑AC‑3 audio support.” [Elektroda, TELMOR_PL, post #20405789]

Is MUX‑8 still in the old standard?

Yes. MUX‑8 still operates in the older DVB‑T system. Sets lacking HEVC can often view MUX‑8 channels, even when other multiplexes show black video. [Elektroda, LeDy, post #20405971]
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