Phillips Magnavox 55' projection horizontal lines
My Phillips magnavox 55" projection TV has been developing thin grey lines that move at different frequencies only on the white areas of the picture. They used to go away after I would turn the power off for 5-15sec but they seem to show up more frequently and don't go away after the shutdown. They used to only show up after I would change the analog channels. Any Ideas of whats going on?