"philo" wrote in message
...

Open the machine, and have a good listen inside.
You might be able to localise the noise.





May sound funny but it works...
just use a small rubber hose

one end in your ear...the other to "sniff" out the source

(I used that method for balancing those dual-SU carburetors way back in
the
olden days )

I use it for 48 years in the motor trade.
Also used the screwdriver handle in the ear, for knocks
and ticks.

We had lotsa tricks in those days.
Oh for the good old days. g.