My 36" TV model F36649 purchased in 11/2002 has started displaying the menu and guide any time it wants to. The sound comes and goes. The remote doesn't help. The buttons on front of TV work different options that what you select. For example, the chanel up button turns the tv on, the menu button will bring up the tv guide. I can't make the guide go away long enough to change the channel. If the guide does go away, when you touch any button, it comes back or the menu comes on and mutes the sound. It is very frustrating. Before taking to service center, does anybody know of a fix at home?