Every now and then my picture on my tv coming from my phillips tivo has a flickering color. It totally messes up the color for several minutes at a time. I am worried because right now it comes and then goes and then there is no problem, but this tivo is less than 6 months old. what happens in a year when the picture does this all the time?? Has anyone had this problem?? and if so, did you get it taken care of?