Good day, it appears my 300-HC controller requires a power supply replacement according to the Control 4 technician I spoke with on the telephone. He advised if I could purchase a used one and swap out the power supply it would solve my problem and would avoid a Control 4 technician having to attend to program a new controller. My first question is has anyone in the forum tried this and question two is where would I find a used one in good working order. Most retailers want to sell you a new one. Any information would be helpful, thanks, Terry in Canada