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Hum interference after recaping my Xpander

Hum interference after recaping my Xpander

2012-12-09 by Tobbe Bergman

Hi Xpander users

I noticed that my Xpander makes quite a loud humming noise just sitting close to it and when playing electric guitar right next to it makes the guitar signal really noisy.

I had it at my techie for almost a year but I cant remember it made such a loud hum sitting close to it or that it interfere with my guitar.

I have a lot of equipment but the Xpander makes the most noise and I can actually hear the humming across my room when there are no speakers on at all.

Apart from that it works great !

Could anyone confirm that this is normal or not ?


Thanks

Re: [xpantastic] Re: Hum interference after recaping my Xpander

2012-12-09 by WT

I gather that it is an acoustic hum.
This is the transformer vibrating.Try tightening the screws or possibly use some rubber gromets to isolate the transformer from the chassi.
WT
Show quoted textHide quoted text
----- Original Message -----
From: envia94
Sent: Sunday, December 09, 2012 2:39 PM
Subject: [xpantastic] Re: Hum interference after recaping my Xpander

Hi, this is not normal.

You quite likely need a hum eliminator:
http://www.amazon.co.uk/s?ie=UTF8&field-keywords=Ebtech&index=mi&search-type=ss

Cheers,
Tiitu.

Re: Hum interference after recaping my Xpander

2012-12-09 by envia94

Oh, sorry, did you say that your Xpander is humming even though you don't have any loadspeakers connected and all other gear then the Xpander off?!

I think it is then only the power unit that is able to hum like this and it would require to be replaced. (Can be a fire risk, if you don't.)

Have you tried to connect it in a provenly correctly grounded (three wires) wall plug? And, also, tried in the both orientations of the plug?

...

Re: [xpantastic] Re: Hum interference after recaping my Xpander

2012-12-09 by PeWe


Yep !
My Xpander\ufffds transformer also hums a bit and did since I buyed it new,- but it\ufffds not in the audio signal as also not a ground loop.

PeWe

Am 09.12.2012 14:42, schrieb WT:
Show quoted textHide quoted text
\ufffd

I gather that it is an acoustic hum.
\ufffd
This is the transformer vibrating.Try tightening the screws or possibly use some rubber gromets to isolate the transformer from the chassi.
\ufffd
WT
\ufffd

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