I found some FAQ for the Panasonic plasma sets including the ST50,GT50,VT50 with Viera Connect from the support site.
Answered some of my key questions that weren't covered in the regular manuals, like some features in the web browser and how to do a full set reset to clear out all account information and settings, if you later want to sell or give way the TV, to restore it to a factory default condition.
How do I reset all factory defaults and settings to this TV?
To reset the TV to factory defaults:
1. Press [MENU].
2. Select "Setup".
3. Scroll down and select "Reset to defaults".
4. Enter your password (if created earlier) or create a temporary new password.
5. Select "Yes" to reset the TV.
All TV settings will be reverted to initial values and all customization settings will be cleared.
Note: You can repeat "First time setup" from the "Setup" menu. This will not affect any other TV settings (picture, sound, etc.).
How can I deregister my Hulu (or any Viera Connect) account from the TV?
Reset the televison by following the listed steps: 1) Hold the [Vol -] button on the TV itself. 2) While continuing to hold the [Vol -] button on the TV, hold the [Menu] button on the remote. Continue to hold the two buttons for about five seconds. The "Self Check" screen should appear on the TV. 3) Hold the [Power] button on the TV until the TV powers off. The reset is complete. Note: This procedure will also clear all other TV applications and settings.
How can I delete a favorite or bookmark from the VIERA Connect Web Browser application?
1) Open the VIERA Connect Web Browser. 2) Display the "Favorites" screen. 3) Highlight the favorite that you want to delete. 4) Press and hold the [OK] button on the TV's remote control. A pop-up menu is displayed. 5) Select the "Delete bookmark" option. 6) Press the [OK] button.
The top and/or bottom of the picture on the TV are cut off. How do I make the image fit the TV screen?
The picture format in the TV or connected device may be set to ZOOM. Change the TV's picture format by pressing the [FORMAT] button on the TV's remote control repeatedly to select a different picture format, such as FULL or JUST.