Good luck... I just had a post on here earlier this week, and also on avsforum trying to find discretes for these. I installed six of these in a dentists office (he supplied them), and then found that I cannot do an ALL ON or ALL OFF from an RTI K2 because of the lack of discretes. I am so cheesed off at Toshiba! Why would they do this? Does it cost them any more to use the same codes that they use on other displays? Do they do it just to get under our skin?