Does this 40W 5-port model squeal or make any other sort of sound, like some reviews suggested the older models did?
1839748
Yes - mine squeals (ordered October 2014), I'm pretty sure it's an inductor or similar on the inside. Only occurs when a device is plugged in (so when the DC/DC inside is actually under load).
1839749
Using item for about 1 month on a daily basis. No sounds of any kind noted.
1839750
I have never had a power strip squeak, whine or make any other sound. This is a power strip for USB devices. The one I received is working fine and is quiet as a mouse.
1839751
I've read other reviewers comments about exactly that, a high pitched whine like a camera flash charging up. All I can say is the one I got is perfectly silent. I keep it on my nightstand and have never heard anything.
967699
Mine makes the same sound. It doesn't seem to affect performance. Love this machine!
1896325
Its a high frequency PWM (15khz), so not audible in my setup. Im using it in a small motor so I cant hear any whine. Im not sure if this would be the case on a larger motor under stress.
2195675
I have the newest model just delivered today. Nowhere near as noisy as the units in the videos. However mine is sitting on a concrete floor and not on wood.
841366
We have had this unit for several months, (in our kitchen), and I have never heard the unit run. I've heard the question asked before, but we have not had any issues with noise or otherwise. Very happy with our purchase...
168975
Thanks, but I'm not talking about the clicker. The newest model (came out about 3-6 mths ago) has no sound at all with the clicker off. The older version does have a soft clicking sound even with the clicker off. Just trying to find out which one these are before buying. Thanks.
100120
No, thanks goodness, I've not experienced it having a buzzing sound. I know the annoying sound you are talking about because I getthat buzz from a different type fluorescent fixture in my laundry room.
1348572
We've used ours about the same and no unusual noise. Squealing sounds like a belt problem like a fan belt on a car.
1401261
I have not had that occur. I wish I could tell you more about what is causing that noise. It might have done so, but I had mine installed by a professional and I was not there for the testing. I have not had a power failure so it has not had to kick in either, so I haven't heard it in operation.
443173
I never hooked up sound, so I can't speak to that aspect of the device. I think that this is a very old model, it's probably been sitting in the warehouse for a long time. I returned this model immediately after receiving it. It wouldn't power up, when it finally did the screen was obviously damaged - googling suggested the damage was from being too hot. Sorry, that's all I've got. It would be helpful to know what source you have it hooked up to and how you've plugged it in.
850258
I don't recall having that sound.. I would trouble shoot the whole project.. Starting with speaker is in good shape the connections the wires then try the knobs and.check the wires from battery mine actually worked out good and.I purchased 5 Amps from 5 diffrent brands in the same price range and this one is not to shady. Just make sure your all good on ur end if problem continues I would say ask for replacement
356108
Not to my knowledge. Mine has never made a noise of any kind. You should contact the manufacturer or Amazon.
337842
No, never. We are very pleased with this transformer. It runs noise free. What I can tell you though is that the one we had before this one got fried, as someone hooked an appliance up to it that was exceeding the allowed maximum wattage. That one did make a loud humming noise before it blew. If you are certain that your wattage is a match, it might be defective. The only other thing I can think of is try setting it on the floor, that is where I keep mine. Somethimes transformers can make surfaces vibrate and cause a humming sound while running.
1404508
I haven't had a squeal. If the floor is uneven it will make a loud noise. I have mine in a large opened area so it doesn't do too much for odor. My second one is in a bedroom,smaller room so it works better.
63850
Yes, the power is not power full due to the fact that it uses for laptop and it doesn't have sub-woofer. If you want more or louder noise, you need to buy the system which has power sub-woofer. I have the same issue. Thanks
1655320
It does, kind of a squeel but it's quite, I don't even notice it anymore. If you have a fan in yourbathroom and turn it on you probably won't be able to hear the sound.
379640
Thanks everyone for your answer. It does seem to be one specific, and newer, model that makes the running water sound. We have noticed the noise most definitely attracts other birds besides our normal residents (maybe ones that would have kept flying by without noticing?) I'd strongly recommend the version that makes the running water noise, which, I've learned, is apparently the 6WW. We're only in need of another because some raccoons took exception to our ownership of the agitator arm (that spins the water) and stole it. :( Anyway... Thanks again, everyone.