Annoying clicking sound through the Studio Display speakers

[RobertoDLV]

Hello everybody, unfortunately it's me and my Studio Display... again

Bought an apple refurbed Studio Display weeks ago.
I'm keeping on noticing that when I play any sound through the display, there is this tiny "click" coming from the left bottom corner of it, sometimes before and after the sound is played. It's not always the case, but its like 80% of the time it plays any sound and I'm beginning to be quite annoyed by it (I can trigger it with macOS system sounds, videos on internet... Music also works but the "click" disappear if the songs play back to back, as if it's been triggered whenever there is a new sound playing after total silence).

I just found two comments on another website describing the exact same issue (tiny clicking sound, bottom left corner).
Am I doomed and should it be already repaired, or is this a widespread issue no one is having a solution for (like the infamous buzzing sound coming from the back of the display?

Here's a video, you can hear a stystem sound (alert) and right after the little "click". You have to put the volume up. It's way more noticeable in real life. I always think water is dripping on my desk from my plants above when I hear it...

 

[RobertoDLV]

So just to let anyone interested know, I replaced it by a brand new Studio Display (not refurbed) and the problem is still there, on the lower right corner this time... Yet it's quieter and "maybe" less present but still annoying (and for such a price...). I bet it's another widespread issue with those displays but not everyone will notice it unlike the buzzing issue.

 

[xraydoc]

So just to let anyone interested know, I replaced it by a brand new Studio Display (not refurbed) and the problem is still there, on the lower right corner this time... Yet it's quieter and "maybe" less present but still annoying (and for such a price...). I bet it's another widespread issue with those displays but not everyone will notice it unlike the buzzing issue.

That's really weird. I've never noticed this out of mine, though I will admit that my room isn't completely silent (quiet air filter in the corner and other household noises), nor is my hearing all that great, so perhaps it's there and very very quiet. Mine are older, so I wonder if there's something different about one of the power ICs being used that causes a pop when the power to the audio system comes on and goes off.

 

[RobertoDLV]

That's really weird. I've never noticed this out of mine, though I will admit that my room isn't completely silent (quiet air filter in the corner and other household noises), nor is my hearing all that great, so perhaps it's there and very very quiet. Mine are older, so I wonder if there's something different about one of the power ICs being used that causes a pop when the power to the audio system comes on and goes off.

Thank you for your answer!
Yeah I also wonder if it mostly affects newer units... I also wonder if it can be related to the electrical network of everyone's home, like the buzzing issue...
I really don't know if I should take it back (as I still can) and buy ANOTHER brand new one. But I think there is high chances it will have the same issue... What an annoyance.