The picture on my TV flickers on and off when I
You cannot run HDMI from any source thru the Yamaha to the TV. The V661 is 1st generation HDMI headache. Version 1.1 which basically is useless. Don't blame Yamaha, it's not their fault, it's HDMI. All manufacturer's receivers prior to 09' series use either 1.1, 1.2, or 1.2a. and they all have issues. So, here's the skinny, run your audio to your receiver via optical or digital coaxial. Then run video directly to the TV via HDMI if you wish. The problem arises when you have more sources than inputs on your TV. Depending on the size of your TV can make a big difference in how you wire it. If your TV is 50" or smaller, just use component, the human eye cannot differentiate between 720p and 1080p and that's a fact. second fact, most TV shows are broadcast in a native resolution of 720p, the only real 1080p programming is on HDNET, Discovery,National Geographic and The NFL.
What I mean by that is the camera used to take the actual picture is a 1080p camera. Major money! so, that being said, if your tv is larger than 50", and it's 1080p not 1080i yes, you can see a difference. If you post a comment and list all your product, I can give you the best possible way to put it all together. I feel your pain and aggrivation! I am a Yamaha, Marantz, Proceed, and Adcom Dealer. I get it from all sides! If there's anyway I can make it easier for you, I will. Hope this helps