Hi sorry that happened to you;-(
Ok, check this out,
If the unit still blows the main in the hose when you turn it on, then you will need to replace the motor or an electrical part but the engineer can check that out for you as specialized test equipment is needed to determine if its the motor or a shorted simple cheap art as it may very well be with this unit:-)
But if the unit will no longer blow the houses main breaker when powered up, and the motor isn't running the motor may need to be replaced. Fortunately the motor isn't very expensive:-)
I will stick with you on this and if you will rate my advice on this as good or better before you close the page, the system will allow me to schedule free follow ups with you so if you need me down the road it will be free for you!
Thank you and I hope I have been helpful?
Have a great day.