Looks like you've done everything I would recommend. This may sound like a stupid question, but are you sure that your remote is programmed for the right DVR? That's about the only other thing I could think of, other than seeing if it responds to the power button on the front of the unit.
If you've done all that, I'd definitely call D* and see what they can do. If you have the protection Plan or it's still under its original warranty, you should have no problem getting it replaced.
If you've done all that, I'd definitely call D* and see what they can do. If you have the protection Plan or it's still under its original warranty, you should have no problem getting it replaced.