Posted December 29, 2023 at 20:05 GMT
Hello Luigi,
If this turntable has not been used for sometime it probably needs at the least be cleaned and lubricated. As you know these are not simple machines and depending on your skill level you may need someone to do someone familiar with servicing it. There is a service manual you can download from this site that can be of help for many tonearm and servo tracking adjustments after cleaning and lubricating. The keypad has copper contacts that may be oxidized and causing your stop key function. If you take the keypad out it can be cleaned by inserting a small strip of sandpaper between the contacts. Ideally the sensor arm should be removed and the tone arm linkage cleaned and lubricated.
If you have not had a capacitor replacement, that needs to be done as well, look up Beoparts on the web to see if they can help. There are electronic faults that unless you have experience with electronics will not be solved by cleaning, lubricating or adjustment.
I am not an electronics technician. These are great turntables but take it from someone who basically can solder and follow guidance from a lot more experienced people on this website, there are a lot of things to sort out before a simple answer can be given to your turntable issues. But maybe one of the more experienced people here will give you a more specific solution to your problems.
Good luck.
John