I purchased a new SONY KDL55HX820 TV about a month ago and have yet to find discrete Power On and Power Off codes for it. Other discrete codes work just fine. I have tried the discrete codes from the 2010 model Sony monitors but they don't seem to work. Any suggestions? For me this will be a deal breaker for this TV as I need to have these codes to use with a control system. Any help would be greatly appreciated.

All the best,

Robert