Signed up here just to post this: I just got a 7011 and am having similar problems. Most troubling is that the HDMI signal to my TV (an LG 75UH8500) drops out when upconverting analog video such as VHS and laserdisc. I have a LOT of old material on obsolete formats and analog upscaling is essential in any receiver I buy, unless someone can make the equivalent in a separate box. What happens is if playing a tape where there is a significant dropout, or sometimes on the laserdisc player if it is starting up a disc (which usually causes the picture to 'roll' for a split second) the receiver will stop outputting a signal and my TV will show its "No Signal" display. The only way to get the picture back when this happens is to switch the receiver to another input and then back again, and that's just not acceptable considering what this receiver costs. I was using a Pioneer before this and it NEVER had that problem- the worst that would happen is the picture would go black for a second and then return on its own.
Its other problem, which I already called Marantz about and they advised to exchange the receiver as "that shouldn't be happening", is my Lenovo laptop computer will not connect to the receiver's front input. It has the same effect on my TV as the analog glitch- it triggers the TV's "No Signal" display. Looking at the computer's screen it can't see that it's connected to anything, and the receiver won't even get any sound from the computer with the TV hooked to it or not. Another problem I found was my Toshiba HD-DVD player would ONLY work through the front input and none of the rears, but when I disabled Deep Color on the TV (which I can't really see any effect of) it then worked through those inputs. That did not solve the other problems however.
I'm about to pack up the receiver and send it back this morning for an exchange, but I just hope these problems aren't inherent in the model itself. I chose this one mainly because it's the only brand that still has a set of multi-channel analog inputs, which I also need for some older equipment. I would buy another Pioneer receiver but their new ones don't have those anymore.
Would appreciate any thoughts on this; from some of the other comments here it sounds like there's some compatibility problems between some equipment and TVs that Marantz needs to work out one way or another. I have an Oppo UDP-203 and have had NO problems with that, thankfully, but I need all my old stuff to work with it too. Does anyone else here use this receiver's analog upscaling?