[Kenwood] TS-850AT Tuner Noise

[Scott Remington]

Hi All,

After many months I've cleaned up the bench my 850 is on.  I fired it up
with a dummy load connected and tried to autotune into the dummy load.
Almost immediately a VERY LOUD screeching was heard coming from the rig.
It's definitely coming from the tuner when things are moving inside.  Does
anybody have any suggestions/precautions before I jump in there with my
screwdriver and oil can?

Thanks!
-Scott  KC7MRV