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Post subject: fender 410 hot rod deville sounds like a helicopter
Posted: Wed Jul 06, 2011 6:53 pm
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Fender 410 hot rod deville sounds like a helicopter... I heard it might be a preamp tube. Any ideas?


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Post subject: Re: fender 410 hot rod deville sounds like a helicopter
Posted: Wed Jul 06, 2011 8:11 pm
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Hi ronsundquist,

Try plugging your guitar directly into the "Power Amp In", and if the noise goes away it might be a preamp tube (V1 or V2). If the noise remains, it is more likely the pi tube (V3) or output tube(s), or even a filter cap. :idea:

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Post subject: Re: fender 410 hot rod deville sounds like a helicopter
Posted: Thu Jul 07, 2011 10:14 am
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shimmilou wrote:
Hi ronsundquist,

Try plugging your guitar directly into the "Power Amp In", and if the noise goes away it might be a preamp tube (V1 or V2). If the noise remains, it is more likely the pi tube (V3) or output tube(s), or even a filter cap. :idea:


+1 Good idea to check if the amp or preamp is the location of the root cause.

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