It's quite easy to open the RC64 (and the RC24) remote. Just pry up the grey insert at the edges. There are two tabs on the backside of the insert that keep it in place. Once removed you'll find four Phillips screws. There are two more screws under the battery cover on the backside. The RC24 only has three screws on the top side.Tom in Bristol said:Subject functions on one of our 5 RC64 remotes has quit working. Has anyone opened up one of these to see if there are contacts that can be cleaned for a quick fix?