LED broken? First all on, now none


I have been using a ReSpeaker Mic Array v2.0 for some weeks now and all was fine.
Today it was shining all (circle) LEDs at me in white with full power. Reflashing the firmware did not change that. Trying to change the LEDs through the pixel-ring scripts always returns “Not support to change pattern”.
When trying the record/play functionality of the Mic, while attaching the headpones, it first switched to 2 LEDs and now NONE (except the red and green ones in the middle). Microphone and playback as a sound card work absolutely fine.
Are the LED broken? Anything else I can test? Any fix?