I just bought a 770 and love it, however, the remote mode lights (dvd, cd, md, cdr, tv, vcr, cable, and sat) on the remote control stay red and are lit constantly. The only time they aren't lit is when the unit is off, or I push a button and the light will turn off for a few seconds. Is this normal?? If it isn't, how can I fix it? Because there isn't anything on it in the manual, and I dont feel like changing the batteries every 2 days. Thanks.