I believed that is known as blooming and if my memory is correct; I believed the CRT has had it.
My problem's with an older television, normally perfect picture, clear,superb colour,no problems but now the picture's gone all 'fuzzy', unclear & undefined - impossible to see faces and writing on the screen is undecipherable! There is no waviness, lines, interference or ghosting. I'm wondering if this is an aerial problem as it's on every channel. Anyone any ideas?