Both our ViP612s are running 6.02 and seem generally happy. However a new bug has emerged. We power up a TV, see the screensaver, push the select button, and every so often the sound returns but not the picture. We can change channels; probably everything on the remote works, in fact, except without picture it's hard to verify. But if you key in another channel, you get the sound from that channel; the tuner has tuned to that channel. Just no picture. Only sound. You could say the TV is now a radio. Only way to get out of this is rebooting the DVR. Of course losing our current recordings and imposing a several minute wait; not acceptable. Dish tech support (while generally excellent) has nothing here. Not a known problem, no known fix in the works, no workaround for the customer short of rebooting. Has anyone else seen this? Any workaround?