Tech@echostar.com provided the answer --- My TV was over-riding the converter box and forcing the Closed Captioning messages to stay on. I unplugged myTV for several hours, and the Closed Captioning signal from my TV was turned OFF. Now, I can control the Closed Captioning messages using the remote control for my converter box.
The following is the answer I received from
Tech@echostar.com.....
Thank you for your email. We apologize for any inconvenience that this may have caused. To turn the closed captioning off, please press Menu, 3, 5, 1. From this screen you will be able to turn the captioning off by selecting Off and then pressing Select on Done. If you still get them with the captioning turned off, please make sure that
CC is not turned on through your TV’s menus as well.