My DVD player does upconvert but I tried to use the 2600 upscaler by turning off the upscaler in the DVD player and it still showed greyed out in the GUI. My cable box is an HD DVR but I turned off 720p and 1081i leaving only 480i to see if I could upscale the 480i through the Yamaha. Still nothing I am going to continue playing with it tonight...It really is an outstanding receiver for the price but I want all the bells and whistles to work even if for now I don't have an immediate need the upscaling. I am also awaiting a response from Yamaha regarding my e-mail as to this issue. I'll let you all know what I find out. If anyone else has a suggestion on what I might be doing wrong please let me know. If it is defective I will be bummed as it will mean another hour spent reattaching everything to the replacement. Again though...to my untrained ears it blows my old 5790 which I thought was great...out of the water.