Radio "dead" after replacing battery. I HAVE THE CODES! (But no way to enter them)

[gowestwarho]

I see a lot of info out there about how to find your lost radio codes and whatnot, but that is not my problem as I have my codes. The issue is that after 1)having a dead battery, 2)replacing said battery, and 3)having the car sit unused for a week while waiting on a replacement coolant tank part, I NOW HAVE A DEAD-SCREEN RADIO AND NO WAY TO ENTER THE CODE OR TURN ON THE RADIO.

I can see that other people may have experienced this phenomenon but I can't seem to find anyone with a published solution as everyone seems to digress into a discussion of where to find your radio codes, etc.

I assume that there is some sort of arcane Porsche security gremlin at work here, and that I need to follow some other sort of procedure in order to get my radio to accept the code and unlock itself. But without the radio showing any signs of life at all, how do I get into this?

Or is my radio now dead for no apparent reason?! (e.g., it was working just fine up until the dead battery and service work time-span).

I hate to invest in a replacement radio until I can ascertain what would make it suddenly die(?) Never in all my years of auto ownership have I seen a radio just "go silent". So what's up here?