All of a sudden I cannot change channels​. I put in new batteries for remote. Worked perfectly all morning.

SECT will switch the remote if you can get there.

Once in a while i have to call my cable co to send what they call a bullet, from the company straight to my tv. How this was helpful.

Try pressing the "tv" button and the "cable" button and then try to use it. See if that works...

Reset your remote

You need to reset remote .