On September 17, 2010 at 06:51, Oz AVI said...
The same as previous Samsungs using RS232, in standby, the circuitry is turned off.
I installed two Samsungs early this year and the RS232 port was on for both of them when the TV was in standby.
Kind of pointless though since Samsungs RS232 ack responses amount to OK or FAILED making the communication effectively no better then infrared.