Had the same thing happen to me this afternoon, except mine is a D1.
I believe that your radio requires 2 power feeds, one aligned with the ignition and one that is a constant feed.
On my D1, the fuse that had blown was on the satellite fuse bank, fuse 6, which in my manual is trailer lights, a 20 amp fuse.
Hopefully someone with a D2 can confirm or otherwise for you.
Cheers,
Lee
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