I have a standard type 27" Sony TV, about nine years old. The sound quality
has been poor for about a year now. Some channels especially sound kind of
muffled, and the volume varies up and down by itself. Seems very strange!
Someone told me that there is a component in the TV that can go wrong and it
governs the sound signal somehow. Is that the case?
Can anyone confirm that for me, before I take it in to the shop and maybe get
a song and dance? I would like to have an idea if it is fixable before I
leave it in the hands of a repair shop.