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Mytek Brooklyn - Rattle Inside

Discussion in 'audio' started by jagdesign, Jun 30, 2021.

  1. jagdesign

    jagdesign pfm Member

    I’ve just taken delivery of a secondhand Mytek Brooklyn +

    All looks good from the outside, although I was a little surprised at how much play there is in the volume knob/encoder, is this normal?

    However, on turning the unit over, I can hear an odd rattle inside which sounds like it’s coming from the PSU area. I’ve taken the top off and can’t see anything moving, and it’s not the toslink flap or any of the other connectors as I first suspected. Video here
    https://drive.google.com/file/d/1t57vaB0EKyqm9DOoepak6d5sdY1i62b1/view?usp=drivesdk

    Any ideas or other owners out there able to confirm if this is normal or not?

    Thanks
     
  2. hifi-dog

    hifi-dog pfm Member

    I had an Avondale tpx that rattled.. it was the spare fuse in the holder
     
  3. RoA

    RoA pfm Member

    Didn't they let Darko assemble one ... ?
     
    unit and jamesd like this.
  4. jagdesign

    jagdesign pfm Member

    ha, I think that was a Brooklyn Bridge, but perhaps this is another reviewer ‘special’ build.

    It looked like there was a relay in the PSU section, although hard to see with the metal shield around it - are they prone to rattling?
     
    RoA likes this.
  5. Timcat

    Timcat pfm Member

    I have a Brooklyn in a second system. There is no significant play in the volume control and it does not rattle (I just picked it up and shook it!).
     
  6. guey

    guey pfm Member

    Is the volume knob attached to the spindle with a grub screw? Might be that just needs tightening.
    I had that happen with my Benchmark DAC.
     
  7. Chris

    Chris pfm Member

    Snake ?
     
  8. jagdesign

    jagdesign pfm Member

    Hmmm, that's interesting, thanks for checking. Here's a video of the play in the encoder - I've checked the grub screw for the knob, and it's tight, so seems to be play in the encoder shaft itself https://drive.google.com/file/d/13b-GMhGByei0dDwraTxdWed_LWF8vTkl/view?usp=sharing

    I've opened the unit up again, and I'm now fairly sure that the rattle is coming from the headphone socket area. If I listen up close, it almost sounds like a ball bearing moving around in there??
     
  9. wow&flutter

    wow&flutter pfm Member

    Try a headphone jack in it and see firstly if it locates smoothly and secondly if it stops the rattle!
     
  10. Timcat

    Timcat pfm Member

    My volume control/encoder rocks about a little but nothing like as much as yours. I wonder whether something has fallen out of the control and is rolling around inside the case. I don't know whether this would be possible as I have no idea of how the mechanics of the control work!
     
  11. jagdesign

    jagdesign pfm Member

    Tried plugging into both jacks at the same time, but the rattle persists.

    @Timcat based on you're unit having less 'knob play', I think something is probably wrong with this one, which is annoying :(
     
    wow&flutter likes this.
  12. Timcat

    Timcat pfm Member

    Maybe yours has had too much knob play (sorry, couldn't resist it!) in the past, or a blow to the knob (or that!). It might be worth removing the knob and seeing if there is any evidence of damage. If the control is working properly and there are no obvious signs of damage, it's probably OK. As for the rattle, I suspect a little more disassembly might be required to track this down. It could simply be a loose fixing or something that has fallen into the case and is rattling around the inside.
     
    jagdesign likes this.
  13. JTC

    JTC PFM Villager...

    FWIW I just checked my Brooklyn and there’s nothing like you describe - all feels taut as it ought :)
     
  14. jagdesign

    jagdesign pfm Member

    Very much appreciate the feedback guys - even if this one works fine (as the seller described) clearly something isn't right so it'll be going back, I think.
     
  15. radamel

    radamel Music Fiend

    Same here.
     
  16. jagdesign

    jagdesign pfm Member

    Ok, so now I'm really confused!

    After not receiving any response from Mytek's support ticket system I decided to email HEM direct, and received a reply early this morning, which unfortunately I've only just seen as it went to my junk folder :(

    According to HEM, both observations are normal!

    The rattle is ferrite rings inside the PSU which are free to move around, and the play in the encoder is totally normal?!

    I posted on a Mytek facebook group where other users also reported that they did not have the same issues with their units. So either this is right on the edge of tolerance/quality control and a bit unlucky, or.. I dunno?!

    Annoyingly, it's all boxed up and awaiting collection tomorrow morning! Would prefer to hang on to it if it's all fine!!
     
  17. sq225917

    sq225917 Bit of this, bit of that

    That's hardly a bag of spanners...
     
  18. sq225917

    sq225917 Bit of this, bit of that

    But secondhand, I'd send it back
     
  19. jagdesign

    jagdesign pfm Member

    Agreed - it’s quite a repeatable sound, hence my asking here. Just coupled with the wobbly knob, it’s a bit disappointing.
     

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