Saba Freiburg Studio 12

Thanks so much Admin and CeesPA1DBA!
I'll try to check and clean the parts.
Thanks again and stay tuned.

p.s.: The service manual in my hands (what's on the net) does not explain how to open Freiburg Studio 12.
I would not want to break the glass, hence the question: by removing the 4 screws on the bottom that anchor the chassis to the cabinet, does the chassis come out with the glass?
Do you want to remove the volume knobs, the tuning knobs and the internal antennas knobs?
THANKS!

@Robertor,
Because your "Saba" can be remotely operated, the on / off switch becomes
mechanically operated by an electromagnet.
The noise you describe explains that the transformer "TR602 and S6" are in function.
This sound comes from the solenoid which is not capable of throwing the switch.
A little cleaning and oil could solve this.
Success!

HEllo Roberton. Welkom bij de buizenradioclub.

The ON\OFF control of this radio is done with a Bistabiel relay. One push ON and one push OFF. The most common problem are the contacts under de ON|OFF button ( S6) some times broken, some time dirty. To check the circuit connect the 2 wires on this contacts together and the radio wil switch ON and OFF.

Hello everyone!
My first post on this forum and I already ask for help.
I apologize for this.
I bought what was for me, neophyte, a reference, the Freiburg 12 Studio.
A couple of bulbs to replace and a couple of problems I will try to solve with your help.
Always reminding me that I'm a hobbyist and not a technician.
The problem I consider most important is: Ein / Aus (On / Off) does not work.
At the time I use the receiver by plugging in and disconnecting the plug.
When I pressed the button, I hear a sound / noise almost like an old doorbell: EEEEEEEEEEEENG (yes, annoying).
I notice the electrical diagram I noticed that the S6 button works in conjunction with a transformer (see photo).



What could be the damage?
Thank you in advance for suggestion / help.