I have a Philips 32pw6006/05 TV. The picture is always top quality, but sometimes the sound just goes off with no warning. It sometimes comes back after a few minutes and sometimes doesn't...If I change the volume setting, higher or lower the sound comes back almost immediatley. This can happen once a week, or ten times during the same programme. When I'm watching a dvd it never happens. I've had a tv repair man out twice who 'fixed it' however its still happening...! Please help before it drives me crazy!