When I turn the sound up on my Humax remote it goes up to 20 but as soon as I let go of the button it goes down to zero! Humax told me to do a manual retune but that didn’t work, any ideas or have I bought a dud?
It would help to tell us which humax you have, is it new and what you’ve already done to try to resolve the problem. (e.g. New batteries in remote, changing remote code)