Originally Posted by Carlo Car

Hello,
I am from Italy and apologies for my bad english.
I just purchased a massive Grindig Concert Boy (it is a 209 I guess).
It works, but I cannot tune it. The knob doesn't work, I opened tha back of my radio and I see there is a (cotton?) thread that ends with a small spring that is loose. And this thread is linked with the tuning knob.
There are 2 tuning knobs, and both don't work, one is for the general tuning, the second is for fine tuning.
There are 2 loose threads, one with the small spring that is connected to the main knob. the other thread is without spring.
Any help?
Thank you,
regards,
Carlo