My picture does not fit my Philips flat screen HDTV screen, I have XFinity Comcast service and have been looking on their website for some help but i see nothing that pertains to my issue. The TV Channel Logo's are all cut off from the screen. I have tried to change the TV format and the screen position setup option from the xfinity remote and the regular TV remote, still nothing is fixed. Can someone help me out?

Make: Philips
Model: 32PFL3506/F7