Anybody have any experience in the last few years with replacing a DVR with one from another person (ie, son)??? I remember you used to be able to add or replace with an eBay item or from an installer without too much hassle from Directv. I know that was when we "owned" the unit! Reason I'm asking, is my HR21 has lost the hdmi output, and needs to be replaced. Now my son has at least 4 HD DVR's that Directv has never sent boxes for returning, they seem to not care when he reminds them. A couple have been hanging around for at least 2 yrs. I thought I would try reasoning with them to be able to use one of his old units. They could save the shipping of one to me, the return of my old one, and I would even pay them their $19.95 or whatever for the "replacement"!!! How could they lose??? I know I'm going to hear that "it won't happen" from many, but I just thought I would bring it up in case someone has any tips to accomplish this!!!