My Roku Ultra, model no. 4660X, was working great for a couple of years. However for the last two weeks the sound is broken up. Using the same source , the sound through my Amazon firestick 4K is normal and through my older Roku is normal. The problem is limited to the Roku Ultra and independent of the source (Amazon Prime, Netflix, etc.)
Re: sound goes out completely several times a day & night..
We lose the sound completely, and have to cycle the power off wait a few seconds and turn unit back on. The length of time this works varies from a few minutes to a couple of hours. We also have problems with the audio lagging behind what the actors are saying so we have to restart the show from the beginning. Maybe this is a streaming issue over a DSL connection? ROKU please fix this problem.