Recently my remote has started acting funny. Sometimes when I push a button, I get no response from the Hopper. I look at the remote and all four top buttons (SAT, TV, DVD, and AUX) are blinking on and off in sequence. When this stops I try again, sometimes the remote works, but sometimes I have to try again two or three times to get the remote to start working again. Batteries are fine and I have unpaired and paired my remote. No change. Any ideas?