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View Full Version : Buzzing / Humming - poor power UK supply



Robert Boltman
2004-12-15, 04:23
Hi,

Just thought this might be of interest to anyone who bought a
Squeezebox in the UK. I ordered one from
"www.advancedmp3players.co.uk" and when it arrived the power supply
was pretty cheap and nasty. Sure enough when I connected it up to some
speakers there was a very loud hum, and as I had bought this for a
bedside alarm clock having a buzzing speaker two inches from my ear
all night was not an option!!

Anyway, I swapped the power supply (actually for an Iomega external
100Mb zip drive one!) and it sorted it completely.

Cheers
Rob

gareth hughes
2004-12-15, 05:30
Ah!

Since I got mine my home cinema has hummed badly. I haven't been able to get
the courage to start unplugging stuff but this would certainly be the most
likely culprit.

I'm not very good at this so do you think I could be cheeky and ask a big
favour:
Could you have a look at the Maplin site and see if you can recommend a
replacement supply? I wouldn't trust myself to get the right one.


cheers
Gareth Hughes


Quoting Robert Boltman <robert.boltman (AT) gmail (DOT) com>:

> Hi,
>
> Just thought this might be of interest to anyone who bought a
> Squeezebox in the UK. I ordered one from
> "www.advancedmp3players.co.uk" and when it arrived the power supply
> was pretty cheap and nasty. Sure enough when I connected it up to some
> speakers there was a very loud hum, and as I had bought this for a
> bedside alarm clock having a buzzing speaker two inches from my ear
> all night was not an option!!
>
> Anyway, I swapped the power supply (actually for an Iomega external
> 100Mb zip drive one!) and it sorted it completely.
>
> Cheers
> Rob
>

Robert Boltman
2004-12-15, 06:10
Unfortunately, I struggled to find a suitable replacement - what you
are looking for is a regulated (I think) 5V 1A AC/DC power adapter.
Many of the ones I found were switchable voltage but only had 4.5V.
You might be able to get away with one of these as long as the current
rating is high enough (ie 1A or 5W total power). I had a 4.5V, 800mA
one and it almost worked, but the Squeezebox crashed if you put it on
full brightness!

In the end I nicked an old adaptor from work (as described!).

Just looked on Maplin... nothing obvious I'm afraid. This *might* do
if it can supply 1A at 4.5V
(http://www.maplin.co.uk/Module.aspx?ModuleNo=13044&TabID=1&source=15&WorldID=&doy=15m12).
But it's not ideal...

Cheers
Rob


On Wed, 15 Dec 2004 12:30:20 +0000, gareth hughes <gvh (AT) dsl (DOT) pipex.com> wrote:
> Ah!
>
> Since I got mine my home cinema has hummed badly. I haven't been able to get
> the courage to start unplugging stuff but this would certainly be the most
> likely culprit.
>
> I'm not very good at this so do you think I could be cheeky and ask a big
> favour:
> Could you have a look at the Maplin site and see if you can recommend a
> replacement supply? I wouldn't trust myself to get the right one.
>
> cheers
> Gareth Hughes
>
>
> Quoting Robert Boltman <robert.boltman (AT) gmail (DOT) com>:
>
> > Hi,
> >
> > Just thought this might be of interest to anyone who bought a
> > Squeezebox in the UK. I ordered one from
> > "www.advancedmp3players.co.uk" and when it arrived the power supply
> > was pretty cheap and nasty. Sure enough when I connected it up to some
> > speakers there was a very loud hum, and as I had bought this for a
> > bedside alarm clock having a buzzing speaker two inches from my ear
> > all night was not an option!!
> >
> > Anyway, I swapped the power supply (actually for an Iomega external
> > 100Mb zip drive one!) and it sorted it completely.
> >
> > Cheers
> > Rob
> >

Manu
2004-12-16, 01:08
Splendid!

I had exactly the same problem, the humming and buzzing made me
(almost) crazy. I have been reading up on ground loops and mains
filters and the whole shebang.
But then I read your post yesterday, switched the power supply with my
old zip drive power supply, and the humming is gone!

If you ever make it to the other side of the sea, I owe you a couple of
nice Belgian beers!

--manu.

On 15 Dec 2004, at 12:23, Robert Boltman wrote:

> Hi,
>
> Just thought this might be of interest to anyone who bought a
> Squeezebox in the UK. I ordered one from
> "www.advancedmp3players.co.uk" and when it arrived the power supply
> was pretty cheap and nasty. Sure enough when I connected it up to some
> speakers there was a very loud hum, and as I had bought this for a
> bedside alarm clock having a buzzing speaker two inches from my ear
> all night was not an option!!
>
> Anyway, I swapped the power supply (actually for an Iomega external
> 100Mb zip drive one!) and it sorted it completely.
>
> Cheers
> Rob
>

dean
2004-12-20, 11:20
We've had a couple of faulty UK power supplies that exhibit this
problem.

Please contact support (AT) slimdevices (DOT) com or your reseller to arrange for
a replacement.

-dean

On Dec 16, 2004, at 12:08 AM, Manu wrote:

> Splendid!
>
> I had exactly the same problem, the humming and buzzing made me
> (almost) crazy. I have been reading up on ground loops and mains
> filters and the whole shebang.
> But then I read your post yesterday, switched the power supply with my
> old zip drive power supply, and the humming is gone!
>
> If you ever make it to the other side of the sea, I owe you a couple
> of nice Belgian beers!
>
> --manu.
>
> On 15 Dec 2004, at 12:23, Robert Boltman wrote:
>
>> Hi,
>>
>> Just thought this might be of interest to anyone who bought a
>> Squeezebox in the UK. I ordered one from
>> "www.advancedmp3players.co.uk" and when it arrived the power supply
>> was pretty cheap and nasty. Sure enough when I connected it up to some
>> speakers there was a very loud hum, and as I had bought this for a
>> bedside alarm clock having a buzzing speaker two inches from my ear
>> all night was not an option!!
>>
>> Anyway, I swapped the power supply (actually for an Iomega external
>> 100Mb zip drive one!) and it sorted it completely.
>>
>> Cheers
>> Rob
>>