My Roku TV just started to crack/ break up the audio in the Leveled or Night Volume Modes. I have the Volume Mode turned off now and the problem has gone away. I dont have a sound bar just using the TV speakers. This problem just started yesterday actually but I dont want it to get worse and am looking for a solution or fix.
Try unplugging it for a few minutes and plugging it back in. There's some issue that either messes up or completely disables audio in night/leveling mode. Someone on another post suggested this as a fix and it seemed to work for others.
I have the same problem with my ONN Roku TV. I bought it July 1 and it worked great for about a month (of course it took me awhile to discover the leveling volume control which I really liked. However it quit working after a few weeks and I didn't know what to do since Roku refused to return my calls. I kept playing with the volume control and after a couple weeks leveling started to work again. However a couple days ago I was watching on of my streaming channels and the sound started going bad again and before I knew it no sound. Roku please HELP US AND FIX THE PROBLEM!!!!!! Permanently!
same exact problem. started crackling yesterday and today no sound . only sound on normal. ridiculous