fault code for blaupunkt car radio?

my car is a rover 25 , the radio /cassette is lit but no sound there is a fault code (H1) which i do not understand can you help please peter.
peter jones, April 2008


done
If you already have the radio code , then would suggest that you disconnect the battery or fuse from the radio , then reconnect and re-enter the radio code.
Post here with result.

note: If you don`t have the radio code, post here with all the Serial Numbers found on the side of the radio

RegWorts, April 2008
link Click here to see other fixes for Blaupunkt.