While you wait for answers, we may have found some information which could help you.
Click here for Volume Sky Workgrundig lcd tv?
Codes for universal remote control URC22B?
How can I fix the picture on Grundig GU108047IV 47" LCD TV?
sticks on standby mode?
How can I improve the sensitivity of my tv remote control?
Grundig WF70-3020 TV?