Thank you for your advice. I used it and every thing is fine.
An other question: I found 2 Beomaster in very good esthetic condition. The electric feeding is not working, there is black juice coming out of one of their coil, (electric wind). I guess there is a way to feed the proper voltage to the circuits even with non BeO modern components? Problem with those coils seems Beomaster usual defekt.
I also found a Beogram 1800, look like new. Open it and found every components like new, no smell, no burn mark, found 110 volt on cable feeding the engine with setting on 220.
If you have advices, they would be very welcome.
My technical english is poor. Sorry.