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Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

Index last updated: 2026-04-28 23:25 UTC

Message

Re: 2101: Schematics for GSP 2101

2001-12-04 by Dieter Waechter

Hi!

My website isn't online, yet.... a lot of work and litte time... sorry..
have patience...

About the valve- distortion... it's no problem for me to repair it... but
via email it's difficult to explain how to fix the problem... do you know
which hardware-version you've got?... you should first check the heating-
voltage (Vh = 12,6 V DC on pin 4 and 5 of the valves)  (or look at the
valves... does the heaters glow red???).... and than... the plate - voltage
(+B = approx. 350 V on C252).... and than...you said no output , if you
switch to ANY(!) valve distortion (clean, dist, sat. tube), right.... then
check the signal on pin 1 of U6 (this is the output of the OP which goes
directly to pin 2 of V1 ... it's the input signal to the valve-
section)..... tell me the results and we can go further.

D.

----- Original Message -----
From: "Chris Geske" <geskec@...>
To: "Dieter Waechter" <waechter.dieter@...>; "Reg" <reg@...>;
"GSPGroup1" <gsp-2101@yahoogroups.com>; "GSPGroup2b"
<2101@...-dod.com>; "GSPGroup3" <GSP2101@yahoogroups.com>
Sent: Monday, December 03, 2001 5:53 PM
Subject: RE: 2101: Schematics for GSP 2101


> Dieter:
>
> Couple questions for you:
>
> 1.)  Where is your website?
>
> 2.)  I have a 2101 that has no output when using a tube distortion.  I've
> switched the tubes with no resolve.  Any ideas.  The solid state
distortion
> works fine, but whenever I turn on the tubes, nothing at the output.
>
> Chris Geske
> LIMS Manager
> Northern Lake Service, Inc.
> email: lims@...
> phone: 715-478-2777
>

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