Sony VCR remote problem

I sent this question to Sony, who didn't want to help me. So, until I
purchase another (non sony) vcr, I have a problem

For about a year now (from time to time) the remote for the VCR stops
functioning. When this happensI try the controls on the VCR and
they all
work. I've removed the batteries from the remote then put them in,
still nothing.
I've put in new batteries. I've put the remote right up to the infrared
receiver
on the VCR, still nothing. After about 15 minutes it starts to work
again, but
slowly. Slowly as in I have to hold the buttons down longer, then after
10
minutes or so it works 100% again. This is very annoying and usually
happens
every other day. Any ideas?
VCR: SLV-795HF Remote: RMT-V202