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Electrical Buzzing noise coming from Studio Display
- Thread starter Indominus
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Interesting. In my experience the buzzing with the Caseta switches go away if you use the model of Caseta switches has a neutral wire.
I ended up replacing all the Caseta switches I had with the model Caseta switch that a neutral wire. So the buzzing caused by the Caseta switches is gone.
But my Studio Display still experiences buzzing noise and its caused by all the regular dimmer switches that are installed in my house. They are all Lutron Diva dimmer switches. If anyone of the switches is turned on, there is a very faint buzzing noise thats only audible if you put your ear next to the display. All except 1 which is in the kitchen. That kitchen dimmer when turned on creates a buzzing noise that is audible even from a few feet away from the display.
I've spoken to Lutron support (which is great by the way) and they didn't understand why the dimmers would be causing this issue. The person I spoke to suggested I try a power filter at the outlet where the display is plugged in to. And the filter he suggested was the APC C2. Which I did get and it did not solve the problem
I've tried a bunch of different things just to eliminate all possibilities. Different computers with the studio display, different thunderbolt cables, different power strips including an Isobar for its supposed increased filtering, and finally tried swapping out the dimmer with a newer one and haven't found any real solutions. My power goes from breaker -> outlets in room -> dimmer -> lights, so its a shared circuit. I have no easy way to separate them either. I use homeseer z-wave dimmers and went from their HS-WD200 to the new HS-WX300 and the issue is still there. Both use a white neutral wire although the newer 300 can work without it. I'm tempted to remove it and see what happens.
yeah, tried it in another room and it doesn't happen on a different circuit. Oddly enough I have the same dimmer type in our kitchen, totally separate circuit and breaker and when that one is around 40-70% the monitor buzzes as well. No other dimmer in the house makes it buzz except the one in the same room and the one in the kitchen. really strange.
I'm facing a similar issue. For some reason my kitchen dimmer which is only a completely difference breaker (but same phase on the electrical panel) when turned on causing the buzzing.
The noise from the kitchen dimmer propagates from the dimmer switch all the way back to the electrical panel in the basement and then all the way up to the 2nd floor to room with the Studio Display
interesting findings, might be due to the LED of the display and something with the dimmer switch. I noticed in a room we have LED lights installed and a dimmer switch if you lower the lights/dimmer you can hear a faint buzz from the lights similar to a fluorescent type bulb. having tried an ASD in this room. the dimmer I believe is also a Lutron.
Wow, this was a nice coincidence that I came across while thinking about calling in my electrician to check the AC switch/circuits since it’s been happening to me as well. The buzz comes when the AC switch is turned on and the AC unit starts to become more active. As soon as I turn off the AC’s switch, the buzz immediately stops. I had a feeling the problem was specific to ASD since I’ve never noticed this issue happening with my other monitors/devices. I’m still calling in the electrician to see if there’s something that can be improved to resolve this issue but this is disappointing from Apple.
Just had to try this again. Even with everything else turned off, there’s a very minute buzz coming from it but it’s not noticeable to me unless I stick my ear behind the ASD. Even with A/C on, it’s rather quiet but if I set the AC to H’Cool which pulls a lot of power, then the buzz gets a lot more noticeable. Even w/o H’Cool, I guess whenever the AC draws more power = more noticeable buzz.
Will try some of the suggestions in this thread but wondering if there’s a way to fix this in my specific case while Apple is still figuring things out.
Will try some of the suggestions in this thread but wondering if there’s a way to fix this in my specific case while Apple is still figuring things out.
Tried connecting to my APC UPS to see if that resolves the problem when AC was on but zilch. I also noticed that while on UPS battery, I hear the same noticeable buzz.
I'm inclined to contact Apple tomorrow and see what's up but wondering in case if that takes time to come to a conclusion, whether there'll be any damage that could happen using the monitor this way. I wonder if anyone here who contacted got an answer about that.
I'm inclined to contact Apple tomorrow and see what's up but wondering in case if that takes time to come to a conclusion, whether there'll be any damage that could happen using the monitor this way. I wonder if anyone here who contacted got an answer about that.
Lots of electronic devices have whine and it usually doesn’t damage them. Much more likely that your sanity will be damaged first. 😅
Reached out to Apple via chat and described the issue. They don't have any confirmation of this being a known issue when I asked about it but have scheduled a call for tomorrow. Will see if anything fruitful comes out of it. In my case, it's a lot more annoying to get good support since I'm in India and I have to drive for tens of kms to get to an authorized service partner. Would rather do all that after I knew there's a possible fix.
In case anyone here managed to get theirs replaced/internals fixed and it works fine afterwards, would love to know about that.
In case anyone here managed to get theirs replaced/internals fixed and it works fine afterwards, would love to know about that.
I honestly don't think there's going to be a fix without a revision to the power supply. Must be sensitive to something... grounding, maybe? Weird that it's happening internationally, though, and not just in one region. Here's to hoping there's a revision to the power supply. Fortunately I'm not having any such issues. I guess I better not move until I'm ready to replace my Studio Displays.
Yeah, I hope to do any kinda replacement dance once I'm positive there's a proper fix. I'm not a big fan of the servicing situation here and the trips are not going to be pleasant.
Called Apple support. I mentioned everything I've tried and the person asked me to try "SMC reset" 🤔 for the Studio Display which was unplugging it, waiting 15 sec, plugging it back in, wait 5 sec, turn it on. Which didn't do squat as expected. Once again, they weren't ACK others facing this issue and I pointed to all the links that cover this. He said will check with the engineers and get back and understand what needs to be done. Attached a video of the issue.
Apple level 1 support is the last to know about anything.
Sigh. But I appreciate the people who took the calls for being patient and understanding. And not making me do too many unnecessary things after I described in detail everything I tried. Hoping to get an update by the end of the week on what next.
Apple service folks came and checked the monitor and observed the issues. Didn't have any remedy so will have to take these into the service centre later. Sigh. The headache will now be if they aren't able to reproduce the issue at their site even though I mostly think they can.
Been with Apple two weeks for now I guess and they’re saying they can’t reproduce the issue. 😔 They’re in talks with the Apple tech team but yet to conclude on this. Very frustrating. I hope they eventually escalate and do something about it rather than just saying the equivalent of “Works on my computer” for this scenario.
Really appreciate you keep updating! I'm in the same boat just with a Mac Studio making noises like that. 99.99% PSU related I think, for mine they also couldn't reproduce the issue.
No problemo, I am curious to see the verdict myself but I'm also quite frustrated that it's taking long. I've heard about that Mac Studio issue too, big bummer. So, what's the next course of action in your case? Replacement?
I'm starting to think it is result of the display itself power supply or bad setup of your DIY mini-slip in your picture that uses a 220 circuit and some cheap patch panel switches have been known to cause noice in circuits! To bad even experienced local electricians are still using these defective parts!
I agree - I have two mini split units in my house and only one of them causes the electrical interference/buzzing noise. The second mini-split is fine.
Maybe chaise the circuit mack to patch panel and see if it matches the other mini split! That might be a cause!
For me at least it's the only thing that has changed in the setup. It's clear that the Mac Studio/Studio display is the one with poor power supply, and can be easily electrically interfered. In another thread a few said a replacement Mac Studio solved the buzzing noise problem. One PSU manufacturer just used cheap filtering/poorly shielded capaicators in my opinion. They should fix that instead of me "fixing" the house. I did try to chaise the circuit with no success.