I am thinking of buying a Magnavox 52 in' approx. 10 years old tv. But I noticed when I went to look at it that there is a very slight red spot about the size of a softball or so in the middle of the screen. It is faint like it is really only noticeable when the back ground is light like white or something similiar. Does ANYone know whta could cause this & how much it would cost to fix? Thank you all for taking time to read this. GOD bless you all !