Have model KDL-40V4100. Only have a small picture in upper left corner. Have tried using the remote to turn P&P off by clicking Options, scrolling down to P&P, selecting options and selecting Exit P&P. Does not fix the problem.
Saw in another post to hold down upper + button and click on power button to turn on and reset tv. Unfortunately this combo of keystrokes does not turn on my tv nor reset it to factory settings.
Resolved. TV pic is normally from cable box (HDMI). Tried using a different source - connected PC to TV and pic was fine. So then called cable company and they sent a reset signal to box and voila the pic was full size. I.E. in my case, it was the cable box signal not the P&P feature causing the issue.