Fix Fault Porsche

my cdr23 will not not light up to allow me to put a reset code in,fuse is good and I can extract a cd? this occurred after I pushed an improper code?Could I have entered a code that could shut the un ... more

The CD is stuck in the OEM audio/nav system on the dashboard. the unit will not power up and I can't get the cd out of the unit manually.

Stero in my boxster stopped working, so replaced it with a second hand stero from ebay, its now asking for a code wich i don't have, can this be fixed by myself or does it have to go back to porsche?

radio in full working order cd player was very tempermental single cd still worked when multi changer give up, now thats also given up