Needing some help on this please. When you turn key on the truck codes 406 Cont Capacitor then when I run self test it shows results code 408 Drive FET and 410 Drive FET Left. I tore down the control panel and replaced the left Drive FET board. Put back together and having the same results. Need to get this unit fixed spending to much time trying to get it to run. The main contractor won't close tried making it work and blowed the 500 amp fuse by the contractor.