Hi
@Disarmamant
I never thought to check the batteries.
I have never oiled the spindle bearing, I do not know how to do that.
Ask this question from a point of ignorance. The paper disc with the black marks on says 50hz on it, does it matter that the output of the PSU is 60Hz?
If I were you I'd change the battery in the strobe anyway after ten years.
Oiling the spindle bearing is quite easy, but you have to check the ball in the base of the spindle is put back correctly. You will need a few drops of ISO VG 32 slideway oil, and small blob of grease. Remove the drive belt and carefully lift the platter off the top of the spindle.
Then you can slowly lift up the spindle and remove it from the bronze bearing outer, this is the point where its easy to dislodge the ball from the base of the spindle. You might find the ball will fall out anyway and remain in the base of the bearing. If that happens then a small bit of grease on the end of a pencil will enable you to retrieve the ball from the base of the spindle.
Add a few drops oil into the base of the spindle and a smear of oil onto the spindle shaft. If the ball has dropped out of the base of the spindle then you can put a very small bit of grease in the hole at the bottom of the spindle and push the ball back in place, the grease should hold the ball in place whilst you replace the spindle back in the bronze bearing outer. As the fit between spindle and the bearing outer is very close you will find the spindle will resist dropping back down in the bearing due to the air pressure inside the bearing.
If your bearing has a 'well' machined in the bronze outer top face, like mine does, I'd add a few drops the slideway oil into the recess well while the bearing spindle is being refitted so it can lubricate the top of the bearing. You might find it takes a little while for the spindle to drop down fully in the bearing out as the air can only escape very slowly.
Don't be tempted to buy some 'super duper 'spindle bearing oil advertised on the internet. Jon Palmer told me to use only ISO VG 32 slideway oil for good reasons.
If you need some of the correct oil send me a PM with your address and I will put a small bottle of it in the post for you.
The PSU for the motor outputs at 60Hz to drive the motor at 300rpm. The strobe disk you have is to check the platter rotation at 33.33rpm using a 50Hz strobe, so no it does not matter that the PSU is 60Hz.