It sounds as if your television is in Shop Mode.
To disable shop mode, you need to do one of the following:
1. Hold down the menu button on the television's bezel (not the remote) for about 10 seconds.
2. Push the volume button up on the front/side of the television, release it, and then push down and hold the menu button for 10 seconds.
This should take out you of Shop Mode and effective leave your setting as you prefer.
Keep me posted.
I have a problem with picture size settings. If I set the size at zoom or wide zoom it remains in this setting for about 20 minutes. The screen then goes blank for 2 seconds and then comes back in 16:9 size. I have checked the menu but to no avail. I also cannot setup the auto wide setting, remains a shaded blue colour in the menu. Finally, the tv used to play a tune when swithched on and off, it does not do this any more. Can you please help.
Thank you in advance - Raycas1