Hi there , i have a samsung tv , and had a black remote for ages but it packed in a few weeks ago , telewest sent me a silver remote , but the volume & mute don't work , they have sent me 3 other remotes to try , but now say it's just coz of the make of tv and will have to just use the samsung tv remote for volume !!! maybe sharp tv is the same ?? does ma heed in changing remotes just to put volume up 'n' doon , lol