On February 5, 2017 at 13:39, PeterN said...
Don't. You'd need the TV to have & support a driver for whatever model of USB-RS-232, and also to NOT power down the USB ports when the TV is shut off.
+1
You're adding a humongous layer of complication to this. You may never get it working like that. The key is to verify your commands work and then to be able to get reliable control from your system.
