Hello! The problem is either in the quality of the oil, or in the fact that something is pressing on the motor axis, forcing quickly to destroy the oil (misalignment of the assembly). Also, it would be nice to check the voltage (v) on the motor.

Hello

Thank you for your answer... I hope Vaseline is ok... that’s the only one that working good.

it used to work during 4 months perfectly so I think voltage is ok.

your hypothesis about oil and pressure seems good ;)

is vaseline oilthe good one ? Il will check about alignement using workshop manual...

have you ever heard about replacement of the bridges (i hope it’s the good word) in the motor... by something with modern materials ?

I would frankly not recommend vaseline for the engine. It's my personal opinion. I do not know the correct international names of the types of oils, but you can use a good  syntetic oil  from  engine the car.

I just once had a case with a cassette deck, when something in the motor was skewed, and no lubricant worked for a long time in such uneven conditions.

Hello

I finally found the solution and used Vaseline Oil (not vaseline): the motor is spinning really really good : regular and fast ... starting is fast (spining correct speed is fastly reached)

BUT !!!!

The motor is noisy !!! It doesn't not sound like a vibration but more like a let's call it a slow turbine ! When you press start you have this sound and when you listen your record at low volume you really ear it, this is frustrating !!!

Let's see if i can load a video

Posted on youtube : put speakers ON and loud 🙂

Changed the oil by sewing machine, but then was spinning correctly but verrryyy long to get correct speed... but less noise...

Then i tried oil from my... BMW (Motorcycle) 20W40: less fluid than vaseline oil but more than sewing machine and perfect resistance to heat and time...

Works really good and makes less noise...

Then i centered correclty centered the motor (was touching a little bit the case) : now it make really really low noise.

BEOGRAM IS NOW PERFECT !!!! SOOO HAPPY !!! 

Still working great... this oil is perfect. 😁

While this may work for a short while, you will eventually experience that the motor bearings will run dry again. They need to be infused with oil under vacuum and then you can enjoy a silent motor for hopefully another 30 years.

While this may work for a short while, you will eventually experience that the motor bearings will run dry again. They need to be infused with oil under vacuum and then you can enjoy a silent motor for hopefully another 30 years.