Volume with Supersonic TV
This did not work for me on a new Supersonic SC-1911. Tried a number of other TV mfg and so far no luck.
Forum Discussion
See this existing post re other TV brands to try for Supersonic: https://community.roku.com/t5/Remotes/Control-Supersonic-TV-power-and-volume/m-p/862237/highlight/true#M38906
