[sdiy] Waldorf Striechfett right channel buzz

[Dave Garfield]

 Hi, all
Just purchased a Waldorf Striechfett from across the pond in London.  When it arrived and I plugged it in, I was greeted by a horrendous LOUD motorboat "PUTT! PUTT!" noise from the right channel.  The left channel works just fine, as do the other functions that I've tried.
Any idea what would cause this?  Seems like a short in the output somewhere.  Shall I wait to find out what the seller says about a warranty, should I contact Waldorf directly, or should I take a chance and open it up to see if there's anything obvious that I might fix?  
Thank you in advance.  I appreciate any light you could shed on this, as I'd love to have stereo strings as promised.
Dave Garfield - Colorado, USA
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