Put in a wireless home easy wall switch, with receiver in loft above, after 3 years, suddenly stopped working, replaced battery in wall switch, still didn't work, so put in new light switch and receiver, still can't get it to work, checked power going into receiver, and paired switch with receiver, nothing happening, connected a temporary flex from receiver to a bulb, still nothing, anyone any idea what could be wrong.

Youngbob, January 2015