The battery went flat on my Mk II 2000 Punto Sporting last week.
I have had flat batteries before but this time the radio & CD changer won't work. I have checked the fuses and they are fine, so I guess it's the codes - which I have. But now I'm wondering how they are entered - as the radio does not even prompt me to enter them.

I suspect I have to go to the dealer but can someone please help me out?

if the units not prompting for a code then it wont need it, it sounds like somethings up with your radio?
does it display anything when you switch it on?

-=[uno 1.0ie RAAAWW!]=-
-=[trained fiat tech for what it's worth.]=-

Yes, there's nothing at all when I turn on the car or press buttons on the radio/CD player