My Leisure Bay Spa has recently started to go out on overtemp.If i shut off the power and let it cool off it runs fine for a while then goes out again.Also if i let it cool off by itself the pumps will restart.I need to know if i need to replace the temp sensors or the main circuit board.Also they no longer make leisure bay spas so i'll need to find after market parts.Any help would be apreciated.