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Cooler Master MK730 Keyboard Coil Whine

Travercraig
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I recently bought this keyboard from: https://www.scan.co.uk/, however after a few days I've noticed that there appears to be coil whine eminating from the top right of the keyboard.

 

Exactly the same as described here in this reddit post: https://www.reddit.com/r/MechanicalKeyboards/comments/5pwxz6/my_new_cooler_master_masterkeys_pro_s_has_coil/

 

I've tried using a different USB-C cable, trying diferent USB ports, disconnecting and reconnecting the keyboard, restarting the PC, disabling all LED's and even trying other computers. However none of this stops the coil whine.

 

Note that I have not installed any of the software I have purely used the built in on board memory profiles for lighting.

 

Does this sound normal, or should this not be happening on a keyboard? The only place I expect sopme coil whine is on power supplies and GPU's.

   
   
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I mean, coil could conceivably happen on a keyboard.. seeing how many coils are on the board:

https://i.imgur.com/xO5hxOa.jpg (That's a Masterkeys Pro S)

But I don't see it as normal on a keyboard and would RMA it indeed. (after testing it on another USB device, like another PC/laptop/even TV..)

 

My Masterkeys Pro S does not have any coil whine.

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards work: https://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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8 hours ago, noxdeouroboros said:

Not normal, RMA it. 

 

7 hours ago, minibois said:

I mean, coil could conceivably happen on a keyboard.. seeing how many coils are on the board:

https://i.imgur.com/xO5hxOa.jpg (That's a Masterkeys Pro S)

But I don't see it as normal on a keyboard and would RMA it indeed. (after testing it on another USB device, like another PC/laptop/even TV..)

 

My Masterkeys Pro S does not have any coil whine.

Okay sounds like I'll have to contact them. Thanks.

   
   
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7 hours ago, minibois said:

I mean, coil could conceivably happen on a keyboard.. seeing how many coils are on the board:

https://i.imgur.com/xO5hxOa.jpg (That's a Masterkeys Pro S)

But I don't see it as normal on a keyboard and would RMA it indeed. (after testing it on another USB device, like another PC/laptop/even TV..)

 

My Masterkeys Pro S does not have any coil whine.

Just to ask, even if you put you ears close to the top right of your Masterkeys Pro S can you still not hear any coil whine or high pitched electrical noise?

   
   
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19 minutes ago, GR412 said:

Just to ask, even if you put you ears close to the top right of your Masterkeys Pro S can you still not hear any coil whine or high pitched electrical noise?

If I do it with my left ear, I can hear a slight beeping noise when holding my ear to the bottom of the keyboard (near the USB jack/flip out feet), but I don't hear this with my right ear, so I am not even sure if it's my keyboard or ear producing that sound

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards work: https://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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5 hours ago, minibois said:

If I do it with my left ear, I can hear a slight beeping noise when holding my ear to the bottom of the keyboard (near the USB jack/flip out feet), but I don't hear this with my right ear, so I am not even sure if it's my keyboard or ear producing that sound

Okay thanks for checking, on mine you can hear the whine / buzz far away, but as you get closer to to the top right it gets louder.

   
   
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