I need to reset my tv back to facory settings

Enter factory mode, and do a factory settings. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

connect it to a PC and try updating or restoring.

connect it to a pc and update or restore.

bit of a weird one did the seller explain why not to restore back to factory settings?
martyn

Need manual to find out how to get rid of the PIP and get the 40" main screen. What's in the PIP is in fact the regular 40" screen image. I am trying to restore the regular 40" back. I thought maybe the manual would be a big help. Thanks to any suggestions.

you might have to restore it to its facory settings

restore the factory default settings is to press in and hold the RESET button on the Wireless MAXg Router for between five and ten seconds.

You will lose all of your personal settings if you restore the factory default settings.

You might need to do this if you are unable to access the Web User Interface or have forgotten your password.

hope this helps

in the menu first check if focus is set to auto or manual, need to be auto, if it is then pop off the front cover and acess panel with TV on cafefully press small button on signal pcb front edge, this is service mode, press pip mode,then pip channel after intialize turn TV off then on, function should be restored.

Try resetting the settings. In the menu there should be a settings option. Reset them to default of facory settings. Here is a website that mayl help you with this.
Let me know if this works out for you.

http://www.retrevo.com/support/Sanyo-DS20930-TVs-manual/id/17567dj485/t/2/

Try pressing mute on remote, then press mute again while holding down menu on tv to enter service mode. HTH

The problem was solved by using the TWC cable remote control and selecting "TV" on the top and the press the big blue "Select" button. DO not forget to put the remote back into "CBL" mode. Apparently this is a hidden feature, which works even on TVs, which officially do not support PIP. I works only with the one tuner, video 2 and video 3 but not video 1.