clive100:
In my recent experiences with repair technicians (so called) They do not have a good success rate of correct diagnosis first or sometimes second time around.
It's more like lets take an educated guess & fingers crossed we are right. Especially when the customer is picking up the repair tab.
I'm glad to hear the OP is going to end up with a serviceable machine at no money cost (it sounds like they may have lost some hair over this though).
Faults are easy to diagnose when it is a hard or total failure - the technician relies on the evidence in front of him, which is reliable and tangible, and the machine works once the fault is fixed.
When it comes to a "working but not quite right" fault, the technician relies heavily on what the owner/operator can tell him, and on prior experience (prior experience in this case being that it is usually dirty and needs a good huck-out). This is where an old-timer will out-perform a young-buck.
You can bet that in a 2.5 year old machine, not many have had bearings failure (yet). If the tech has a similar call out in a month on the same model, he's going to be thinking - "I've seen this before and the bearings in this model are not what they could/should be". So the OP's lousy experience will help the next owner to get to a solution faster.



