Hi all - I have an HR21-200 (owned) that went into the reboot loop last week. I called DTV and they promptly sent me a replacement. They also indicated that the one I had was owned - so I did not have to return it, and could do whatever I wanted with it. I am fairly certain that the problem is a bad power supply. Does anyone have any suggestions on where one might be able to find just a power supply? I checked with weaknees (no luck) and on eBay (no luck). Thanks in advance for any suggestions or help!!