I thought the RC64R might be different from an RC64 or RC65 in its ability to control the volume on my Olevia TV. I am told they are identical, except for the RF transmitter. I suspected as much. Anyhow, that mean, since other remotes do not work, my RC64R is probably defective but in a useful way and I need to try to repair it. There are only three flakey keys, pause, reverse skip and fast forward. I tried squirting some contact cleaner in there but that didn't work. I need to open the caae. If the contacts are exposed I can spray cleaner directly on them. If they are sealed, I may be able to exchange the pad from the RC65 that does not work. Yes, I know there are no "user serviceable parts" in there, but that never stopped me before. DTV certainly isn't going to service it, so it is up to the user (me) to do it.