Hi guys,
I am new to the world of thermomix's and so far loving it!  My thermomix is about 3 days old, and has from the start had a funny revving sound on speed 4.  It is like a whirr, whirr, and hubby says it sounds like it is revving too high and cutting out before kicking back in.  My consultant is looking into it when I see her on Thursday, but said she has something like this in another machine recently and it was fine.  My friends machine doesn't make this sound.  Any thoughts?  Speed 4 is pretty vital from what I gather, and I don't want my thermomix to seize in a few years... was hoping for a rather long term investment.