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KATANA DAC not detected


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Hi -- the US distributor sent me to this forum: 

 

I got a new KATANA delivered yesterday, and it does not work:  the Status LED on the MCU board is blinking very fast, and that never stops, indicating that the KATANA DAC is not

detected (according to the manual). I have configured the sound card to be the KATANA, but the command `aplay -l` does not show any sound card being recognized, and also there is no KATANA directory in `/proc/asound`.
 
The three boards came pre-assembled in a box, and I tried a number of powering solutions: 2 power supply with and without Isolator, one power supply, and was very careful to make sure the jumpers were set correctly. 
 
After power up the status LED blinks a few time slowly, then starts to blink very rapidly. 
 
Is the unit broken or is there something I can do to get it to work?
 
Thanks for any help and support -- LATB
 
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