Have I fried my Digi2 Pro?

I've been happily using a Digi2 Pro with a Pi 4B and Spotify Connect for a few weeks.  I decided to add a tri-colour status LED which I attached to GPIO17 (for power) and GPIOs 5, 6 and 13 for RGB.  The LED worked fine with a simple Python program but now my HifiBerry Digi2 Pro card doesn't work i.e. no music.  In-fact when using command aplay -l the card doesn't show as a device anymore.  Have I fried it somehow?  Are there any diagnostics I can do to see if it is broken or not?


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