may be fuses, i beleive there is a main fuse in the fuse box for it, may run other things such as cigarette lighter as well so check the handbook and see if there are other things you can check operation of to identify main fuse
problem.
If not may be the fuse in the back of the unit itself. Most stereos have a small fuse located on the back of the headunit. Check this to see if it is blown too.
Failing that may well be that th headunit has packed up altogether, not a strong point in the Leons, or ibizas either, mine has just packed up. Whilst the unit is out just check the connections for a current too.
