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LEDs on DAC+ ADC

Hi,

I have a new DAC+ ADC on a pi 4 in a white steel case.  When the pi boots a bright red led lights up on the DAC/ADC board.  Sound plays ok, and LED goes out after playback finishes.  LED lights whenever something is played.  If no sound is played after boot then LED stays on.

Is this expected behaviour and if so why?  Can I get the pi to boot without the LED lighting? Can I get a sound to play without the LED lighting? Why is it red - is it warning me that something is configured wrongly?

Regards

Eric

 

 

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