@Mikeq got me there! My 14SG now displays the receiver voltage. I said it was something simple. lol
From the link menu select system. From the system screen select/highlight "link". Tx will tone for about 4 seconds in which you then simply turn on the receiver and Yay! It works! Receiver ID stored and voltage is now displayed on the monitor along with link strength.
Just wanted to pass along my thanks. Ran into this same issue, with the R7008SB receivers, on two of my receivers, and was stumped to figure out why. Following will be some pictures, I hope. This little trick fixed it on my T14SG Transmitter also. Some the the pictures are not real clear, but enough to get the point across.
Again, thanks, this had me stumped for quite-a-while.
R7008SB_showing_id_properly: (Note when can see ID, telemetry is working.)
R7008SB_telemetry_working_properly_cropped
Note: Can see Antenna with bars, and sensor readings.)
R7008SB_not_showing_id_properly_cropped: (No receiver ID# showing.)
R7008SB_telemetry_not_working_properly_Cropped: (Note: No bars off of antenna, and no telemetry data.)