I have a ECP 4500. When i call up the internal grid pattern , the grid moves...it looks like its breathing. The grid used to be rock solid on the screen............now it slowly breathes and moves around so slightly. Is this a warning sign of bigger trouble to come? What exactally is wearing out? Id like to get it fixed up before it gets worse. When viewing TV or DVD the trouble seems to dissapear, so its not a big issue, i just dont want it to evolve and leave me without my big screen........thats a terrible thought.