Humming noise from power supply - anybody else? Can anybody confirm this?
379300
I have the same thing here. It's normal for most powered speakers with an external power brick to have some audible sound when the transformer cuts to standby.
558411
Whenever you get that dreaded hum, be sure to check your ground connections.Could be something as simple as trying out a new instrument cable.I've even had some brand new cables with an open ground.You may have to re-solder the ends.
976644
Yes it has been fixed at least in the one I bought. No whine or any noise for that matter, sometimes I wonder if the fan even works. This is truly the best power supply I have ever owned and it is extremely efficient. I noticed a 32Watt drop in power usage after in installing it. Migrated from a PC-Power & Cooling PS measured by Kill-A-Watt.
1000154
Probably a connection issue with one of the components hooked to the TV (mine happened to be a Sony DVD player...) removed that and the hum went away. Gave me an excuse to get a progressive scan DVD player... hooked it up and still no noise. It took me a bit to narrow it down, since I've got so many console systems. ;)
819556
Also, Jeff: Even after all the electrical questions are answered, this still makes a low level hum which might be annoying. Having tightened all the external screws on mine, the hum was far less but could still be heard during the silence between musical tracks or even with very quiet passages.
390126
Mine is whisper quite. My PC tower sits on my desk about a foot away from my head. I can hardly tell it is on. sounds as if yours might be defective or that something is rubbing or is vibrating.
558409
You're experiencing ground loop hum. Try using batteries only. If you still here loud hums, send it in for repair.
2148362
We had one with a loud humming noise and it turned-out it was not working properly so we returned it for a new one. They can have a low pitched hum but it should barely be noticeable. If you know how to check the voltage with a 12 Volt meter, you can check the delivery side of the transformer.....if it is not giving a consistent voltage of around 12, the transformer is bad.
830958
I have not had that problem. It sounds like a bad power switch or loose connection on the power supply. I would return it and get a replacement if you can. Mine has worked great for several hours of use so far.
1326998
Is the hum coming from the power adapter itself? If so, it might be getting ready to go bad. Replace before you have a fire. If the hum is from the speakers, re-post and I might have some suggestions for that as well.
522397
I hear no humming associated with this item. I have purchase two of them ( for home & Beach Condo) and have had no problems.
2118648
Could be cable / power point issue..the XLR cable will cut off the hum..( Balanced cable )..
456747
I've successfully plugged both into a power source without humming. However, I suspect it may vary from power source to power source, and maybe even from unit to unit. Your milage, it might vary.
569378
Yes, these units have a rather strong humming sound when the power is going to the lights. Mine is mounted outside and not near any open window, so it is no bother. If yours is making noise through the wall, you might want to put some soft foam between the unit and the wall to isolate the vibration.
766187
The reason you are hearing the hum is because your transformer plates are slightly loose. The metal plates in the core are laminated and can become separated, you may be able to reduce or eliminate the hum by painting a varnish or shelac onto the core and letting it "soak in". I would suggest several thin coats to do the job. The metal core itself can be loose and vibrate as a whole too so you may need to seal that up the plastic bobbin that the copper windings are wound on. Otherwise if all else fails this unit is quiet, at least the one I got is. You may also try insulating between the transformer and the joist if yours is mountable that way. Hope that helps.
2176543
Yes. Also this desktop has a problem of making a loud humming noise, check with other reviewers, this seems to be a common occurrence.
573950
no there's no buzzing. Have you tried installing the latest drivers from amd.comReally strange!!!