FIOS just installed a few days ago. Local channels appear full screen, but most don't, such as ESPN. Even with 16:9 ratio turned OFF, the top and bottom 2 inches of the tv screen are blacked out. This makes the picture quite small. This didn't happen with Comcast cable, from whom I switched. The installer couldn't figure it out - he said it was probably the tv. That seems unlikely to me.
Any ideas on how to remedy this?