no sound from some IPTV channels

    I'm using LibreELEC 7.0.2 on a Intel NUC machine, and I'm using it together with PVR IPTV Simple Client.
    I have a problem with the sound, on some channels I get no sounds, but when I run Kodi on my MacBook pro I get sounds.

    So there is no problem with the sound from the stream.

    I wonder if anyone had this problem and can help me out or if anyone could guide me the best way to troubleshoot this problem.