How do I get full picture back?

Using your TV remote, press the "Menu" button and navigate to the "Setup" or "Settings" menu. Look for the "Reset" option and select it.

this could be your cable box or tv causing it. First try the tv. On the remote go into menu look for video settings. There though be a setting called aspect ratio. This should be set to 16:9. If that is set correct then try the same with the cable box remote.

do you have picture in picture on that tv, pip on the remote. if so try pushing that button

I had come home about a week ago and pushed the power button from my remote but my tv did not respond. So I just went to the front panel and pushed power but once the tv turned on, the volume was on full blast! I used the front panel volume decrease to get the volume down, but when I stopped pushing the button, the tv increased its volume to full blast again by itself! Naturally I just turned the tv off for a few moments. I tried the remote again, no response again, so I used the panel power button. The tv volume was still full blast when it turned on but after I decreased the volume it stayed this time. The picture is and has been perfectly fine and the tv was working fine. The next day the problem started all over and now once we turned it off from frustration of having to manually use the panel to change channels, it now will not turn on at all. I have changed batteries from my remote, reprogrammed my remote, pushed system reset several times, unplugged it for a while, bought a new surge charge, and even held the menu and device panel buttons for 10 sec and tried to turn the t.v. on again! What other options do I have or what may be the issue at hand and possible parts that may need to be replaced?? Thanks!!

Have the cable company correct your wiring

Can't changes tv picture screen sizes,when the tv is off.She is cleaning the tv,when it is off wright?Yes.Than the tv programming u are watching stay small screen size the whole entire times even different seen or in commercials?Tv even in difference tv channels,screen sizes are small too?Sometimes tv changes screen sizes by itself to fit the tv programming it is playing to fit it prgramming format it displaying.Still have all small screen sizes all the tv channels.Tv must be on and playing.U have the tv original remote wright?Yes.Try looking on ur tv remote control look for a buttons said like Aspect Ratio,Picture Sizes,ZOOM or VIEWMODE buttons,by pushing one of these buttons on the remote should able to changes tv picture screen sizes.

on the remote push the random button twice. the first on will be random on the disc selected. when yoiu push it twice it's full random

Press the repeat/random button until it shows "r1" will repeat the current track.
Press the repeat/random button until it shows "rA" will repeat the entire CD.
Press the repeat/random button until it shows "rd" will play all tracks in random order.

Press the repeat/random button until nothing shows will cancel repeat/random playback.

I just kept pressing all the buttons on the remote , one at a time until the picture came back on. I am not sure which button resovled it -- I think it was the osd button or the ps/is button  . Thank you

Look for a "PIP" (Picture In Picture) button on the remote or in the TV's menu. I suspect that it has been pushed but there is not a second source to view. That would explain the smaller version in the corner.