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  1. #1
    Junior Member
    Join Date
    Oct 2012
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    13

    QLMS, EDO, SBT: Loses DAC

    I run QNAP LMS (QLogitech Media Server via QNAP club store), an SBT, EDO, and an iFI xDSD. This ran great for a long time. However now the SBT does not see the DAC. In addition I do not see the option under Output to select the iFi, only Analog & Digital or Digital only.

    Note that I rebooted and re-installed EDO and Kernel many times.


    I factory reset, reloaded EDO and no luck.
    I switched to a Topping NX4 and no luck (Note: I used to get the option under Outputs to select the Topping)
    I tried an iFi Nano DSD and after rebooting, re-downloading the Kernel, I see the option for the iFi driver...but it only plays for 5 seconds and cuts out. This happened twice.
    I switch to Analog out of the SBT, bypass the DAC, and no problem. Plays fine.

    Any thoughts on this?

    Thanks. chris
    Last edited by jcbenten; 2021-05-09 at 15:36. Reason: clarity

  2. #2
    Senior Member
    Join Date
    Jan 2011
    Location
    Staffordshire. UK
    Posts
    4,347
    Hi Chris

    As the connections used to work and now don't, you need to try a process of elimination

    Using the Nano, first make sure the battery is charged

    Then swap the usb connection lead

    Then try adding a passive usb hub between the SBT and the Nano

    If possible replace / change the power supply for the SBT

    Hope this helps,

    ronnie

  3. #3
    Junior Member
    Join Date
    Oct 2012
    Posts
    13
    Quote Originally Posted by Man in a van View Post
    Hi Chris

    As the connections used to work and now don't, you need to try a process of elimination

    Using the Nano, first make sure the battery is charged

    Then swap the usb connection lead

    Then try adding a passive usb hub between the SBT and the Nano

    If possible replace / change the power supply for the SBT

    Hope this helps,

    ronnie
    Thanks for the response:
    Nano is bus-powered but it was discharged when I added it to the mix. Same methodolgy for the xDSD which has a separate power and i did not get any connection. I will revisit.
    USB connection lead: I have separate leads for the iFis (iFi supplied blue) and I swapped them in my tries.
    PS: I might have something else that fits but not holding my breath. Everything is working...if i start playing a tune the SBT shows it is playing...just no sound

    ...which makes me think:
    It is possible the USB port on the SBT has gone bad but the location is good and static. It literally did not move for 12+ months until I started messing with it. I purchased the SBT within months of it being released which makes it...10 years or more?

  4. #4
    Senior Member
    Join Date
    Jan 2011
    Location
    Staffordshire. UK
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    4,347
    Everything is working...if i start playing a tune the SBT shows it is playing...just no sound
    have you check the Player volume settings ? Settings > Player > Audio > Volume output should be 100%


    purchased the SBT within months of it being released which makes it...10 years or more
    Could be the power supply starting to fail

    ronnie

  5. #5
    Junior Member
    Join Date
    Oct 2012
    Posts
    13
    Quote Originally Posted by Man in a van View Post
    have you check the Player volume settings ? Settings > Player > Audio > Volume output should be 100%




    Could be the power supply starting to fail

    ronnie
    Volume @100%. For the Nano, iFi digital connection option shows, I select, auto reboot, and it plays for 5-seconds. The Digital Output now only shows the Analog and Digital or Digital only options...the iFi disappeared. This is why I am thinking it is a software issue and not a HW problem...unless the USB port on the SBT is failing. I do not think this would be indicative of a PS problem.

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