Hi there. I have a remote control (no pull) hampton bay ceiling fan. I originally hooked it up to a wall plug with a dimmer. Bad! It worked for a while until the little black box blew up! I then changed it to a wall plug without a dimmer and replaced the little box. Since then, the remote works fine with the light... on/off dimmer, but the fan speed has been stuck on high... no off/med or low. High speed all the time. What do I need to do?