I have a Samsung Soundbar HW-K450/ZF, and it goes to mute by itself after 5 seconds playing.
I press unmute and after 5 second it goes back to mute again.
I have a LG TV connected via optical cable to Samsung Soundbar HW-K450/ZF (source D-IN).
I have the same issues after having none for a year with no change to the setup. I unplugged everything for an hour and rechecked all cabling. Also moved remote away in case there was interference. Please help!
Incidentally, what is the solution. I have HW-K950 with the same problem and my sound bar is essentially an expensive piece of metal sitting there as the volume goes down to 0 by itself within seconds. And yes, before you ask I have the latest firmware update 3117 which caused all this in the first place.
This is happening on our HW-k450 also. Still happens with batteries taken on, so it's not a problem with the remote control. And now the buttons on the side of the sound bar have stopped working also.
It also goes to mute on all inputs/sources
userRibWeFoPG1 are you running software version 1005.0 on your soundbar?
I am having the same issue with my HW-K450 soundbar. It began doing this on 6/17/2018...It goes to mute on all sources (USB, BT, D.IN, AUX, etc..). I have tried updating the firmware with no success. I removed the batteries from the remote and it did not work. The buttons on the side of the soundbar do not seem to work anymore. Please help.