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.
Message
Re: Hum interference after recaping my Xpander
2012-12-09 by envia94
Yahoo Groups archive
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2012-12-09 by envia94