You can reset your TV Server or HD Encoder appliance database to its factory state using the console menu.
Access the server's console interface and choose option 5 from the menu, Maintenance
Now choose option 3 from the Maintenance menu, Backup/Restore
Choose option 2 from the Backup/Restore menu, Restore Database
Select either Factory Settings or dist file (the wording is platform dependent) and press Enter on the keyboard.