The machine after startup can hear the power relay suck up vocalist, panel light has been rapid flash, but less than two seconds after relay and immediately disconnect, preliminary judgment fault parts may be in P board or load short circuit. KWiservice manual download site
 KWiservice manual download site
Boot in various voltage measurement P board, Vsus voltage measurement on 60 v to 70 v voltage, protect the instant test the Vda voltage of 0 v, after power over the ground resistance measurement for 2 o, apparent short circuit, through inspection and found C7165 after short circuit to replace normal machine.KWiservice manual download site