I have a small Panasonic TV, Cable&VHS Combo TV, model # PV-C-1323-K 69W,
and my remote suddenly stopped working.

I put in a set of fresh batteries, and that didn't work. I also tried leaving the batteries out of the remote overnight, and, that didn't work either.

Is it possible that I "locked" the remote by mistake? If so, how do I fix it so that my remote works again.

Thank you so much in advance for all your help.