Page 1 of Tosh 510 welcome screen/menus

just got a tosh 510, linked it to a tosh tv via component inputs. Question is - when the 510 is switched on and the welcome screen is shown (no disc in at this point) it switches my tv to 4:3. It seems to do the same when I switch on the set up menus as well. I`ve got the dvd set to 16:9 - am I missing something or is it normal to flick to 4:3?