I have a Samsung TV model UA55JU6000 that I’m trying to control. The Source Name shows correctly, I can control the volume (and the mute) but I cannot switch it on or off. When trying to switch it off I get error “Could not send command to device on 192.168.8.107:55000”. I cannot telnet to this port as well. Is it possible my TV uses different port for this feature and is the volume controls using another port ?