On my remote, the "light" button is pushed in at all times. I have to push harder to turn the light on/off. It finally stopped working. The controller will only turn the fan on/off. How can I purchase the remote control only... without having to purchase the remote AND receiver togther?

First you need to provide info on the Controller.
I have had luck with Ebay.

Brand and model of remote would help me get you an answer