Just installed a Sharp Aquos LC46D92U for customer...interfaced to: RP6,T3,CM232 RM433. Previous customer display, Sharp Aquos LC37GD6U was connected to the RTI control system above via RS232 and all commands worked perfectly and reliably. Discreet Power On command via RS232 on the upgraded LC46D92U does not work, and the Discreet Power On command is conspicuously missing from Sharp documentation for this latest 1080p unit. All other RS232 commands (power off, inputs, volume up/down etc) are working OK.

Does anyone have any ideas as to what may have happened to the power on discreet command?

Thanks for any advice anyone can offer.

BTW RS 232 code for power on that has worked flawlessly on prior models is: POWR1 \r

JS