Hi Stan,
I agree with
vitesse; repair what you've got if you can. Removing the motor end cap is not too difficult and
Arctic has a pictorial guide. You'll then see straight away if any of the brushes are worn to minimum. A set of four* is about £20, at least a tenth of the price of the other two options you've mentioned.
You could treat and paint the rusty casing; it won't affect the operation of the fan.
Quote:
Originally Posted by cbr1100xx
Any more checks I can do?
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If you have a multimeter you could check that the control box is doing its job if you like. That would confirm that it's the brushes and not a wiring or PCB fault.
Err, yes, you definitely need a new condenser!
Simon
*P.S. Buy these only directly from Engineering Carbon Products Ltd. Avoid cheaper alternatives from eBay which will last five minutes.