help range rover p38 dse elec problem need an auto spark

i have a 1995 p38 DSE and had same problem in the way that went out one morning and the central locking didnt work i can only use the key in the door as the fob never worked so today i replaced the door latch and still no central locking tho when unlocking the door the int light comes on and locking the light goes off but no central locking ? i do not have an EKA code tho i am to belive it could be a damp problem please help :crybaby2: :crybaby2: :crybaby2: :crybaby2: :crybaby2: :crybaby2: