sanyo digital tv modol num CE28DFN3-B ?

i got this tv about 3 yrs ago ,some times when i am looking though the channels the record will come on (as you can aparantly record straight off the telly ,i could never do this .)it says press the return button to cancel but that will not work ,i have to turn it off by the plug and back on ,and the reception is bad when it is raining ,it just freezes ,but but the sound is still there ,and i can not find how to record the digital programmes ,i can record bbc1,2,itv3,ch 4,ch5 with my vhs ,and there is a slot in the back to put some kind of card in ,don't know what for ,might be for better reception ,the book i have is not very good ,model num CE28DFN3-B ,thankyou ,moira.