any ideas,
need to fix a rattle on the drivers door
and check a speaker connection on the rear passenger.
i get sound from the speaker but also a cycling hiss that is only present once the radio has been switched on.
hiss remains if the radio is switched off and is not present if the radio remains off once the engine is running.
nice one land Rover

Have you checked the amps/radio unit for water damage? 

Powerful uks youtube has a video or two on it detailing this kind of job.

http://www.youtube.com/watch?v=r1mKfWhRSxE



I had a similar experience before my Nav died from water ingress  2010 Disco XS TDV6, 2009 Freelander 2 GS

Previous Landrover products -1990 110 TDI CSW, 2003 TD6 Vogue - RRC TD Vogue, RRC v8 Fleetline, Disco ES V8 LPG, 101 Ambulance "Morph", 1964 SIIa Auto Powered by Jag 4.2 Lump - "Percy".