Problem - Output power wire overheated burned off and destroyed relay
Repair - Completely dissemble JuiceBox. Wash with soap and water, try to get the smell out, Cut back wires, Crimp on new lugs, install new relay, connect wires, install pcb, reconnect, test OK

 NOTE:  The cause of this problem was loose power cable terminal screws. We see occasionally this in all makes of EV Chargers, We use special care in installing the power cables and tightening the screws,  

Problem J1772 Cable Defective
Repair Process
Open case with wide chisel and small sledge hammer (2lb),  Confirm EV Charger works (using EV Doctor Go NoGo Tester),  Found the  ‘Clip in Connector is damaged’.  Remove display & PCB, remove ‘Clip in Connector’.  
Solder in preowned J1772 cable.
NOTE putting the PCB back in is very tight because J1772 cable is in the way, Install nut last
Seal case with epoxy, Re test

Toyota Prius G9060-47190 Teardown 
Click Here Teardown Toyota Prius G9060-47190  and  ​Click Here for Additional Photos
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Teardown Mercedes EVCharger to Replace AC Plug and Temperature Sensor
Click Here Teardown Mercedes SCP1T3-DM01713A24  and  Click here for additional photos