I have an HR20-100 and it's freezing every day or two. The other day the sound wouldn't work. I did a reset and the sound came back. I'm buying a 3D tv so it needs to be upgraded anyway. I'm not under any commitment and live near Washington dc. Will they replace the unit? Can I buy the new whole home 34? I have two other units, SWM and whole home DVR. Any advice?