RNS-D CD changer problems

[carrotchomper]

Folks,

I have what I think is the RNS-D Nav+ unit on my 1998 4.2Q, connected to a 6-CD changer in the boot. I was recently away for 3 weeks, when I got back the changer did not want to work- After powering up it came up "ERROR" on the display. However, it then started working again for a while, and has now ceased to work again!

Any ideas what this is? Removing and re-inserting the changer cartridge doesn't seem to work to any appreciable degree.

There is an intermittent water leak in the boot, nothing major but may cause it to be slightly damp in there- Could this be upsetting the changer?

Ta.

Sam