Westinghouse LTV-27w7 7 in. LCD HDTV "hd audio render" Questions

...what might the solution be to fixing it. It comes and goes. It is present in all inputs. Also the HDMI audio cuts in and out what is causing this issue??? hdmi cutting in and out can be your signal ...

Humming noice I recently purchased a Sansui LCD TV - when sound goes through side speakers of TV (as opposed to surround sound) there is an audible humming noise which disappears if volume is set to 0