L322 No sound on right hand speakers

I know this has been on many times, I Have a 54 plate RR TD6 Vogue with the DSP system i have just replaced this as old one had water damage and i lost the right hand speakers after putting the new unit in its still the same any ideas on what the issue could now be. Yes i have checked the balance and fade lol

Have you gone deaf in your right ear? Saint or Hippo will be on soon and they have had experience of the sound systems.