Hi William,
The forum is broken into categories, so I moved it to the one labeled Television. I was hoping one of the family would jump in a give you a hand. I don't have a Jensen, so I would not know anything about it.
I did a search, (search link on top blue bar of forum) which can often bring up a good thread from the past. Here are a couple of links to information on the subject.
//heartlandowners.org/showthread.php?t=7537&highlight=jensen+tv
//heartlandowners.org/showthread.php?t=7534&highlight=jensen+tv+channels
Check these out and if no help, contact ASA Customer Service at 877-845-8750 tomorrow.
Jim M