everything was working fine with my 622 outputting to component and hdmi. but now am not getting any video or sound through the hdmi cable. i checked the cable as i used with my dvd player and it works fine, but can not get it to work from 622 to t.v. , checked for loose cables, etc. everything is o.k. , anyone else having this problem, could it be either a hardware or software problem with the 622?