Is it possible to turn off the light, at least, of the loudspeaker, while the radio is listened to?
I have kept on looking for solutions to my problem, and I have found the solution: My Cosmopolit 7, the firmware's version had v.1.00 and there is a bringing up to date to v.1.17 in Grundig's WEB.
I installed the version 1,17 in me radio and the menu has a new option of BRILLIANCE, with 4 intensities, in her 1, the screen becomes dark almost totally and totally the loudspeaker.
I publish the solution in case some other user be in the same situation.
No, It's impossible to switch off the light when the radio is on. You can try to put it in a place where the light won't disturb your wife or cover it with something.
I have not explained to myself well. I treat what you become of listening to the radio, in the evening, without having the blue light of the radio lit, since you do not let my wife sleep.
Forgive for my bad English
Switch it off and switch it back on after a while. If the light is still on, it means something is wrong with the battery.