Not sure what to suggest at this point, other than measuring the DAC’s output on the 200 volt AC scale as was suggested (while no music is playing).
It would be nice if it were possible to also measure the output voltage(s) of the DAC’s external switching power supply, but that would seem to be impracticable due to the nature of the connector and the lack of definition as to how it is wired. I suppose it's possible that it has been intermittently misbehaving, and caused the failure of the internal supply.
Good luck. Regards,
-- Al
It would be nice if it were possible to also measure the output voltage(s) of the DAC’s external switching power supply, but that would seem to be impracticable due to the nature of the connector and the lack of definition as to how it is wired. I suppose it's possible that it has been intermittently misbehaving, and caused the failure of the internal supply.
Good luck. Regards,
-- Al