The problem with these machines is that the motor isn't really man enough for the job it's expected to do.
This results in excessive electrical noise (sparking) between brushes and commutator and this ruins the module.
What I'm saying in short is that your new module could go the same way as the old one. Even if it doesn't the armature is probably on it's way out.
Beko have superseded the WMA510 with the WMA5100 this model has an entirely different motor, now there's a surprise!!!
Bob
April 2010