Cd will not spin - Sony MHC-5900 hifi

When inserting a cd the player will either not spin at all, or start
spining and stop after 2 seconds. Needless to say he does not
recognize the cd then.

The problem happened in the middle of playing a song. It then
slowed down (music became gibrish) and then stopped spinning.

Enejct and insert of the tray works fine, apart for the spining of
CD. Resetting the system (it's a 4 components-connected hi-fi,
at that time was quite expensive) does not help.

I have opened the cd housing and couldn't find any dirt. Not on
the lens nor anywhere in the mechanism. Reading some
advices here I have used door-lock oil spray on the white
gears connecting to the 2 motors and on the 2 motors themselves,
however not sure I oiled the right points. As far as I can see
under the tray there are 2 round motors. Probably one is
for spinning the cd other for the tray or the lens location, not
sure.

What surprised me was to find on the small rail (left) of the lens mechanism a white drop of what looked like a cosmetic
cream. I thought I have dropped it by chance, but it doesn't
make sense. Anyhow it was one place on the rtay quite a large
drop of white cream you would not expect inside electronics.
Maybe it has something to do with it.