I have a refurbished HR21-200. It didn't take long before the problems started. Jumpy video, dvr turning itself on, audio drop-outs, and picture completely frozen. Last night was the worst - we were watching a recorded episode of Whale Wars and the picture froze and we couldn't get the DVR to do anything. Did a restart and it was working this morning. I'm not sure what # we're up to right no on restarts. We have to restart everytime the dvr develops jumpy video. Is there something we can have the dvr run so we can check for errors? I thought I saw something on the forum previously but did some searching and just couldn't find the post. Thanks, in advance, for your help!