Navigation unit stopped
 

Hi,

I was messing with wires for RTI screen (on the side of navigation disk reader) and it suddenly stopped working. Now I the whole radio unit, screen, parking sensors and don't know what else is dead.
Power still comes to the Navigation reader, so I guess the fuses are ok.
Is there a possibility that the unit is not dead?
I opened the unit (hoped that there is a fuse inside, although I don't think that the power was the problem) and everything looks ok but I don't know how to test it...
Help?

xc90, 2005, 120kw

Luckily it was still a fuse under steering wheel.
Sorry.