What may be done .............is check / replace brushes, check / convince you that the pump pressure is low and pump needs replacing / find a " dodgy " wire that needs replaced, etc.
Had you checked the brushes and found they needed replacing, you could have done so yourself and if the pump pressuse was low, it would be obvious to you.
The servicing / repairs on c/c machines is very simple.
If you clean your filters regularly, allow the motors to run for about 60 sec's when finished each job and treat it gently, all machines will last longer.