Peugeot 207 Factory Radio RD4 Displaying SILENCE Message: CD and Radio Not Working

Hi hukooooo - after hours trawling online for a solution, I feel that this is more likely my last option! I just wanted to get a bit more information from you before undertaking the job.

My symptoms are as follows:
On screen is displayed 'silenced' with a picture of a speaker and a line through. No buttons work (including the stalk). The power button on the headunit (rd45) works. I am able to connect to Bluetooth and make calls.

Attempted:
Volume up (long hold) on stalk
Volume up and down (long hold)
Positive terminal off and left for 10 minutes

The resistor required you state is 3.3k - what is the code for this 0332?

Any other tips and points would be greatly appreciated! I may even make a video of the repair as it seems to be a fairly common fault and zero guidance!

Added after 1 [minutes]:

@hukooooo


Added after 1 [hours] 22 [minutes]:

@hukooooo which resistor do you think it is in the rd45?

>>20946606 .
Hello, have you been able to determine what resistor it is? Because I have the same problem.
.

A different type of radio is a separate topic.

Concerning RD45
.
I found something like this:
https://www.youtube.com/watch?v=srlEazo2zAc
https://www.youtube.com/watch?v=M1jqo3N6WpI

Now the question is which pin is responsible for this "mute" cable, pin 14 is missing.

Hello.
I have repaired such a fault.
You might find it useful:
https://youtu.be/oKDBhXvwj7s?si=nCDYPRhCb0UrojYo