Humm from alarm clock

Tesla

Tesla

Tesla

Soldato
Joined
19 Jan 2003
Posts
17,599
Location
Bristol, UK
Hi all,

My GF and I recently moved into our own place.

Since doing so her alarm clock has started making a humm noise. It's a cd/radio alarm clock so has a pair of speakers built in.

I am thinking ground loop? Would a ferrite core remove the humm? Is there anything else to check for?

Cheers.
 
I don't see that a ground loop could occur on an intergrated piece of equiptment like this? It happens if you have say an earthed amplifier connected to a (naturally earthed) desktop PC for music; but this unit only uses one outlet right?

A ferrite core supresses radio interference, so won't help here unfortunately.

Do you have any mains devices or AC power cables in close proximity to the unit that you didn't before? Did the unit get knocked or dropped so that the transformer inside may have came loose?
 
I seem to remember a thread recently where you had problems with your DECT phones interfering with your internet connection. Try, starting with the phones, unplugging electrical appliances to see if they are causing any kind of interference.
 
When i bought a new Alarm / radio clock a few years back i had a similar problem. The humm sound was very annoying in the middle of the night, had it replaced twice, still the same prob so got a different model. No humm :)
 
these type of appliances dont usually take in an earth anyway as the case is sealed plastic

I vote for the the case being misaligned during the move and humming, or wireles interference from networks, phones etc surrounding your new pad
 
You must log in or register to reply here.
Back
Top Bottom