corgireg

Member
Loss of sound from my Harmon Kardon speakers, it happened after I had disconnected the battery, any one got any ideas how to fix it
 
Reconnect the battery? 🤔🫣

Which RR is it? What year? Standard head unit? Does everything else work?
Battery was reconnected and that when I found I didnt have any sound, the Radio and cd seem to be working as I can change channels etc , my RR is a L322 2006 3ltre
 
Check the fuse to the amp. Not sure which one it is.
Try disconnecting the battery again and reconnect after a few minutes, follow the proper procedure.
 
Did you wait for the light to go out on the CD SatNav unit before disconnecting the battery?
 
Had this problem on mine, I disconnected both terminals from the battery, and touched the earth and positive cables together for about a minute I then left both cables disconnected from the battery for half an hour and then reconnected them to the battery,

A very experienced auto electrician told me to do it, he said that by touching the two leads together it discharges capacitors in the radio unit which resets and clears issues, he says there is a TSB regarding issues with for Ford Focus radio heads and the method I have explained is method to correct it.
it worked for me
 

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