My new/reconditioned 512 (508 replacement) which I installed Tuesday starts recording 2-3 minutes late if it is turned off, like at night, before the recording starts. If the receiver is on, the recording starts on time. . I called DISH and their only suggestion was to set it to start 3 minutes early and end a couple of minutes late to play it safe. The problem with that, of course, is it causes an overlap if you record 2 programs back to back, and, thus, is not acceptable as you lose out on one program. No other suggestion other than the normal unplug the receiver and turn it back on which did not work. They sent me two receivers by mistake within two days of each other and both had the same problem. I sent the second one back as it was also very loud. A software problem? Do they still update the 512s? Thanks for any suggestions.