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Hi Lance,
Any update on this?
This switch appears to be dead now. I noticed the led flash white a couple of times and now it’s not responsive.
I have 4 of these switches and 1 of them started this buzzing recently. Hoping Inovelli will address the issue with a fix or allow outside warranty coverage for what appears to be a faulty device.
The third switch of my original five of these purchased has just started doing the death buzz, do we know at least if this issue continues to happen on later runs of this product? or should I be switching to a different fan switch so that I’m not continually buying these after they go out?
The engineering team is still working towards a resolution on this. At this point I am not sure I can accurately answer this. I also sent you a PM.
I am also experiencing this same issue.
Just signed up to report that I have the same exact issue with 2 of my 5 fan switches.
All my 5 switches are from the first batch when they came out end of 2023. Curiously the two that make the noise are also the two that are used most heavily. One of them started making the noise about a year ago. The second one started the noise a couple of weeks ago.
All 5 are set to a intensity of “1” when the fans are off, meaning that the LEDs are always running at lowest possible level (I believe that’s the default in Home Assistant). I now reduced the off-intensity to 0 for the 2 that make the noise and that at least quiets them down when the fans are not running.
Same as @spectreotvt I’d like to know if the issue is found in later batches or if it’s safe to buy them.
I feel like the responses here have been weirdly patient considering the material reality of these failing in such a short time, so I want to inject some urgency here.
Until this is figured out, I’m telling people I know not to buy and those who already have to be aware of this situation and plan accordingly. I paid thousands of USD to outfit my home with the fan and smart dimmer models, but seeing a fan switch start to die in this way at almost exactly the 1-year mark has made me anxious about when the rest of these will start failing. I’m not post-scarcity AI rich, so I can’t be throwing that kind of money around for a yearly light and fan control subscription.
Also chiming in to say that I seem to be experiencing the same problem, though I would describe mine as a high frequency whine. It seems to happen independent of whether or not the LED bar is on, though the frequency did change once when I pushed the down paddle. I’ve had my switch for ~2 years.
One more update regarding my setup: on one of my 2 affected fan switches the noise is back EVEN when the LED bar completely off (off-intensity=0 in Home Assistant settings). It’s a quieter sound compared to when the led bar is on but it’s still there. @Lance_Inovelli is that expected, I thought the noise is connected with the LED on?
No there is no connection to just the LED bar, it is a capacitor that is in the AC to DC circuit that is vibrating. The engineers are looking in to what can be done of if there is a FW adjustment that may be able to eliminate this going forward but as for now if you would reach out to us through [email protected] we should be able to figure something out on this for you.
I have 12 fan switches and the one I use daily is now buzzing. Being in the bedroom, I need to address it.
I captured the fan switch noise with a spectrum analyzer app on my phone to get a better idea of what is happening.
The pronounced horizontal lines in the waterfall are the paddle clicks. The actual buzz is the activity mainly to the right of about 2.3 kHz. The buzz is not constant when pressing the paddle up and down repeatedly.
@Lance_Inovelli I’ve had many Jasco switches and outlets die in the past due to a 10uF cap in the ACDC circuit. I successfully repaired them all by replacing the electrolytic capacitor with a better quality one.
I think I’ve had mine for 2yrs or so, and I am guessing all of them will fail at some point (bad electrolytic caps are a super common issue) so I would love to be able to repair them myself…
FCC internal picture seems to show there only are a couple electrolytic caps:
Is it one of those on the left edge?
@Lance_Inovelli - Awesome, hopefully it is easy to get to the back of the PCB, and if so, it should be easy to repair.
@Lance_Inovelli I can confirm it was indeed that capacitor, an Aishi 16V 470µF, which I’m guessing is an ERR1CM471E14OT or similar. The top has cracked open and is bulging.
Given the tiny size, 6.3 × 16 mm with 2.5 mm lead spacing, and the circuit it is used in, I don’t want to replace it with anything inferior, low quality, or questionable. That includes ChengX, so I was a bit surprised to see one used on the HV side of the circuit.
The ChengX is the 3.3µF 400V capacitor right next to it, which I may as well replace with a higher-end brand once I manage to source the 470µF capacitor.
I just placed an order for a replacement VZM35-SN, and another VZW32-SN while I was at it… so addictive!! Hopefully they arrive quickly, as I only found the Aishi capacitors at LCSC, with delivery from Asia taking 1 to 2 weeks.
Edit: BTW, this was a 2309 production with the black back shell in case it matters.
UVR1C471MPD1TD is avail through digikey, just a quick search you may find others that are a direct replacement. It is not the easiest to remove.
@Lance_Inovelli The cap I removed has a diameter of 6.3mm and there doesn’t appear to be clearance to install one with a larger diameter (suggested cap is 8mm)… or is there?
Also, the Aishi cap is rated at 2000hrs @ 105C while the Nichicon is rated for 2000hrs @ 85C. While they will likely never reach either temperature, it’s my understanding that the 105C rated one will in general last longer (I would rather not have to do the replacement more than once as I have 12 of these). Lead spacing is also larger by 1mm but that may be workable.
The diameter of 6.3mm is what is narrowing down the choices dramatically 
What is the speed adjustment range and resolution? How much acoustic noise does the switch make at low speed through the AC fan motor? Is this LED acoustic noise issue addressed?
i am asking this because I am considering purchasing a few of these switches if the fan will stay quiet and the led bar can be disabled. i tried using the website chat window and couldn’t get any answer.