While you wait for answers, we may have found some information which could help you.
Success
Message
No power?
No volume?
Code not working?
My Sagemcom DTR 6400 has di3d?
How do I fix liquid damage?
Wont turn on and what the flip flop?
How to fix handset problems ( intercom ) and access control?
Broken aerial?
DAB to DAB+?
How can I mend my old fake airpods?
How can I get read of beeping sound from my radio in?
Charger for MP3 Classic Model: FIR - 410?