TV went into Demo mode on its own. Can not get the TV to stay out of Demo mode for more than a couple of minutes. Also can not find any info on this setting in any manual that came with the set. What is the proper procedure for shutting this off other than resetting the TV and resetting all the selections.

Press clock timer set.
Turn selector to set the hour.
Press enter. Minutes will flash.
Turn selector to set minutes.
Press enter.
Setting the clock will deactivate demo mode.

It is in demo mode. Go into the home menu and you should see a selection for FL DEMO. turn this off and you should be good to go

My TV had the same problem and I have managede to get rid of it. The solution is very simple. This displays mean that your TV is in the " Store Demo" mode and any changes you make will last only for 30 minutes and when the TV is turned off the settings will change back to the normal. Whether you TV is in the "Store Demo" mode can be confirmed by pressing the "Info" button on the remote and you will see that "store demo" appears on the screen. To change this mode to the "home mode" you will have to press the "Volume button" on the TV and when the volume sign appears on the screen then you will have to press the "Menu" button on the TV (not on the remote)and hold it down for about 7to 10 seconds. This changes your TV mode from "store demo" mode to the home mode. Confrim whether the store demo mode has been put off by pressing the "Info" button on the remote to see whether the store demo sign appears on the screen. The store demo is set by sales persons in the shops so that any demonstratation/changes that they make while showing to customers will be temporary as the settings revert back to the original.

Removing Your TV from Shop Mode or Store Demo Mode

First, confirm your TV is in Shop Mode or Store Demo Mode:

1. Press the INFO button on your remote control. A list of settings appears.
2. See if the Picture Mode setting is set to Shop Mode or Store Demo Mode.

There are three methods for removing your TV from Shop Mode or Store Demo Mode. If the first method does not work, try the second or third method.
Method 1

To remove your TV from Shop Mode or Store Demo Mode, follow these steps:

1. Press the Volume button on the side panel of your TV. If your TV does not have a side panel, press the Volume button on the front panel. The TV displays the volume bar.
2. Press the Menu button on the side panel of your TV for about seven seconds. Again, if your TV does not have a side panel, press the Menu button on the front panel. If Dynamic or Dynamic Mode is displayed on the screen, your TV has been removed from Shop Mode or Store Demo Mode.

Note: You may want to press the INFO button on your remote again to confirm you TV is no longer in Shop Mode or Store Demo Mode.

Method 2

1. Press the Volume button on your remote. The TV displays the volume bar.
2. Press the Menu button on the side panel of your TV for about seven seconds. Again, if your TV does not have a side panel, press the Menu button on the front panel. If Dynamic or Dynamic Mode is displayed on the screen, your TV has been removed from Shop Mode or Store Demo Mode.

Note: You may want to press the INFO button on your remote again to confirm you TV is no longer in Shop Mode or Store Demo Mode.

Method 3

1. Press and hold the Volume button on your TV. The TV displays the volume bar.
2. As you are holding the Volume button, press the Menu button on the side panel of your TV for about seven seconds. Again, if your TV does not have a side panel, press the Menu button on the front panel. If Dynamic or Dynamic Mode is displayed on the screen, your TV has been removed from Shop Mode or Store Demo Mode.

Note: You may want to press the INFO button on your remote again to confirm you TV is no longer in Shop Mode or Store Demo Mode.

Press Menu on tv remote, go to Settings and select Factory Reset and press enter button on remote, tv will reset to factory default settings and turn Off and On again itself, now select HOME mode instead of Shop mode to avoid demo mode and go by initial setup screen instructions.
Above are generic info about Sony bravia tv, let me know model number of your tv if you do not see factory reset option in settings menu.
Thanks.

My TV had the same problem and I have managede to get rid of it. The solution is very simple. This displays mean that your TV is in the " Store Demo" mode and any changes you make will last only for 30 minutes and when the TV is turned off the settings will change back to the normal. Whether you TV is in the "Store Demo" mode can be confirmed by pressing the "Info" button on the remote and you will see that "store demo" appears on the screen. To change this mode to the "home mode" you will have to press the "Volume button" on the TV and when the volume sign appears on the screen then you will have to press the "Menu" button on the TV (not on the remote)and hold it down for about 7to 10 seconds. This changes your TV mode from "store demo" mode to the home mode. Confrim whether the store demo mode has been put off by pressing the "Info" button on the remote to see whether the store demo sign appears on the screen. The store demo is set by sales persons in the shops so that any demonstratation/changes that they make while showing to customers will be temporary as the settings revert back to the original.

First reset it to factory default: While pressing [^] button on the remote, press [Power] button on the TV.
Second software update, Click on http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30. For further information, please add you commend.

if by configuration mode do you mean demo mode if so press the vol + and the vol - at the same time for a couple of seconds

sounds like you have it in demo mode. In the menu will have it labeled demo on or off

I have this same problem, just started 2 days ago. Changed batteries in remote and everything - driving me nuts- now i cannot change channel or adjust volume! I powered off TV, took batteries out of remote, turned back on and now still stuck. I think we bought junk!