Finally, after four months of hounding them (they "forgot" to run the trunk line to my street), I finally had a 6200 installed yesterday and saw the first HD material in my Mt. Washington home. Pitiful. A few locals, HBO & SHO and that's it. No HDNet, INHD, Discovery, ESPN, etc. All of the HD channels break up with macro-pixelazation, both locals and satellite feeds. Pretty unwatchable.
After reading this thread, it seems that channel offerings vary widely by the serving head-end (Eagle Rock in this case) but, my goodness, this is terrible. I've got Dish and Comcast HD at a house in Denver that work just fine.
VOOM won't work here, haven't bothered to add DirectTV HD until the HD DVR is readily available, so it's Adelphia at the moment.
Signal strength looked good during the install. SD channels work fine, just the HD keeps breaking up. Firmware is 7.10.
Are others of you in the LA area having the same problem? Do any of their systems NOT have this problem? Is it the 6200? Who do I yell at next?