I have a Hunter fan with a remote that is a discontinued model. The light only stays on for awhile and then shuts off but the Fan works fine. The Hunter help line said that the receiver was probably bad but no replacement is available but could sell me a new fan at a steep discount. Why can't I buy a new remote unit at Home Depot or Lowe's and put it in the fan and remove the old receiver? Or am I assuming that this is too easy. I would like to keep the fan.