Microwave Sanyo Model EM-S5597V. Changed setup by itself. Tiny red "S1" appeared ,then after few seconds changed itself into "S2". No change manually possible because "keyboard" was disabled. How to change setting. ? After disconnection, this setting stays on screen and "Keyboard" remains diabled. Waiting for answer with kind regards Olgierd My e-mail address is : obkuncewicz @ optusnet.com.au