Picture seems to have "Zoomed" in

TV is a couple of years old, no problems, picture quality is great, but somehow the picture has zoomed in a click or two. Channel # is cut off, Channel ID ( where it says CNN FOX etc. ) I only see the last part....say the X in FOX, or the N in CNN ?
I guess it's more annoying than anything, but I would like to have it repaired if possible.
The weird thing is nobody I have talked to has ever heard of this type malfunction.
What say You, Pros ..... is this a first, and is it repairable ?

Chuck