Got an HR21 with a bad tuner. It's been acting up for a couple of months but I had a lot of content I did not want to loose. Called support today wanting to get a replacement unit, I have the protection plan. My issues is I keep getting searching for signal errors and the second tuner causes the unit to be inoperable with SWM errors so it is turned off. I explained to him I moved it to other locations where the receivers worked correctly but the problem persisted. He had me do the Info test, showed cabling issue. The support person insisted I needed a tech to come to my house to check the wiring. I know the problem is the box, all my other receivers work fine, even on that line. He said he could not do anything for me without a service call. At that point I told him I'm not sitting around waiting for a tech and hung up. in the past D has been great on getting me what I need quickly. Anytime a box failed I got a replacement when I needed it. I am not gong to take a day off work and sit waiting for someone to tell me what i know. So at the moment I'm stuck with a semi operable HR21. Perhaps the box should develop some other "error".