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Old 8th May 2013, 12:14 PM
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Brian.Samson Brian.Samson is offline
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Join Date: Jun 2009
Member of: Pontefract, Doncaster Airgun Range
Location: Doncaster
Posts: 2,335

I seem to remember that my first Mk3 made a bit of a sizzing sound, and I think it was down to me pratting about with the blue pot. I pratted about with it a bit more and it went away.

Take the gun out of the stock and look for a blue square thing on the circuit board towards the back - it's about 1cm x 1cm with a white plastic adjuster screw in the middle of it. If your mk3 has got this then I think it's a model B or early model C board - anyhoo.. turning that white adjuster screw will set the power and 'may' make the buzzing noise go away.

p.s. I'm no expert
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