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Post subject: twin reverb reissue vibrato
Posted: Tue Jan 31, 2017 10:02 am
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Hi, i bought recently a blackface twin reverb reissue. The vibrato circuit ( a neon lamp and a LDR) have been replaced by an electronic circuit who wants a sofisticated power supply.
I'm searching the schematics of both.
Can anyone help me ?


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 3:04 am
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Wich reissue ?
Never heard about electronic circuit mod for the Fender original LDR.
Photo of this electronic circuit would greatly appreciated

65 Reissue here;
http://ampwares.com/amplifiers/fender-t ... 5-reissue/


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 3:15 am
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stratele52 wrote:
Never heard about electronic circuit mod for the Fender original LDR.
Photo of this electronic circuit would greatly appreciated


Perhaps you should pay more attention.

I first posted this pic showing the revised tremolo circuit for all blackface re-issues some five years ago......

Image

The digital trem module is located at the rear of the chassis while its dedicated power supply is adjacent to the power transformer. This is a Deluxe Reverb but the Twin Reverb and Super Reverb are similar.

To my knowledge, FMIC has not yet released the schematic for this modified trem layout.

Arjay

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"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKY


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 3:27 am
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Retroverbial wrote:


I first posted this pic showing the revised tremolo circuit for all blackface re-issues some five years ago......


Arjay


I remember very well, but I want to give some work to bobo280.
I should admit, your picture is not very good.


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 3:30 am
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Be careful with your library :lol:


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 6:44 am
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hi both,
it's exactly the circuit i'm searching the schematic.
you say that it exists since a lot af years and Fender have not yet diffused this ? Why ?
Is it "top secret" ? :mrgreen:


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 7:05 am
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bobo280 wrote:
hi both,
it's exactly the circuit i'm searching the schematic.
you say that it exists since a lot af years and Fender have not yet diffused this ? Why ?
Is it "top secret" ? :mrgreen:



For many amps Fender do not publish circuits. But most of them are new amps.
There are many Fender schematic here you can't find;
Have a look
http://bmamps.com/Tech_sch.html


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Post subject: Re: twin reverb reissue vibrato
Posted: Mon Feb 06, 2017 7:22 am
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It's not "my" pic -- I found it on Bing.

But it clearly shows the revised tremolo module and that spot on the PCB (now empty) where the original opto-isolator was once located.

Arjay

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"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKY


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