This morning, a universal TV remote that is several years old stopped
working. I thought somone may have accidently removed the code, so I
reprogrammed it, and it seemed to accept certain codes for the TV, yet
not others. However, it still did not work. On the other hand, I
used a different universal remote, just to make sure the TV was still
fine, and it was. Does anyone know what would cause one of these
universal remotes to appear to accept the code, yet still not work?
Is it a common problem, or does it sometimes happen when the remote
gets old?

TIA.