Own a used CalSpa have all new wiring etc. ...used it for 2 months....went out last week, turnedup heater and came back in half hour...temp. going up...went to check another half hour later and light was off and no display on control panel.....hot? maybe some thing needs to cool off and reset itself?....checked breaker, no trip.....???? took off cover under tub and started looking @ wires etc. saw a melted wire that went to heater relay...also heater relay was smoked....got new relay...installed...fixed burnt wire...turned on breaker ...no trip! cool!!....go outside NO POWER!....used tester..breaker has power...checked where wire goes into tub panel box...HOT....still no power..no signs of any other burnt parts..please help...dont know what else to test....newbie....