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Post subject: Reissue Twin Reverb Footswitch noise
Posted: Sun May 22, 2011 11:25 am
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I have a reissue twin reverb I bought roughly in 98 / 99. It has worked flawlessly up until recently. It developed an audible click or slight pop when disengaging the vibrato with the footswitch. I ha another win reverb that was a 2006 with the same issue. I switched the footswitch out with a new one and with the same results. Does anyone know what might be causing this?


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Post subject: Re: Reissue Twin Reverb Footswitch noise
Posted: Mon May 23, 2011 12:05 pm
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According to the schematic, the twin is not equipped with a mute circuit. Then it could make a pop ! May be clean up the jack and check ground connection of the jack . 8)

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Post subject: Re: Reissue Twin Reverb Footswitch noise
Posted: Mon May 23, 2011 1:20 pm
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Tis-san wrote:
According to the schematic, the twin is not equipped with a mute circuit.


Nor did it ever require one.

I've played Twin Reverbs from every era, going back to 1966. Footswitch operation of the reverb and trem should be as quiet as a church mouse. Failing that, something is amiss within the amp or the switch.

Arjay

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Post subject: Re: Reissue Twin Reverb Footswitch noise
Posted: Mon May 23, 2011 1:53 pm
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Retroverbial wrote:
Nor did it ever require one.

I've played Twin Reverbs from every era, going back to 1966. Footswitch operation of the reverb and trem should be as quiet as a church mouse. Failing that, something is amiss within the amp or the switch.


It sounds consistant, what is your advice ?

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Post subject: Re: Reissue Twin Reverb Footswitch noise
Posted: Mon May 23, 2011 2:10 pm
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Possibly the trem roach itself or either of V5's cathode resistors. I'd also inspect for any cold solder joints, especially within the RC oscillator circuit.

Arjay

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Post subject: Re: Reissue Twin Reverb Footswitch noise
Posted: Wed May 25, 2011 9:01 pm
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Hi Arjay - Just to add - The noise happens only with the reverb "on" and engaging the vibrato via the footswitch. I just replaced the trem bug.


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