I live in a climate with moderate humidity. This often wrecks havoc with the remote controls for the tv, ceiling fans, etc.
Specifically, condensated water forms a barrier between the rubber button and the electrical contact.
(FWIW, a remote on the fritz can be brought back to functionality if the back cover us inscrewed, the layers separated, wiped clean and dried, and reassembled.)
Can a perfect fix be found if an application of dielectric grease is put on the electrical connections?