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

----- Original Message -----

From: Dieter Waechter

To: gsp-2101@yahoogroups.com

Sent: Wednesday, August 13, 2008 9:39 AM

Subject: Re: [gsp-2101] Control One Pedal problem

Hi!
a) replace the LED on the small PCB on the metal sheet monted on the pedal.
b) check the wires to the LED
c) check if it happens if you shake or drop the C1 (contact problem or
screws on pedal loose)
d) fasten the pedal screws
e) check the shutter box. Is it installed correctly?
f) measure the brightness-continuosity of the LED - difficult! you need to
install a second foto-transistor and close the case
g) check the foto-transistor (voltmeter)

Dieter

----- Original Message -----
From: woboguitarelectronics
To: gsp-2101@yahoogroups.com
Sent: Wednesday, August 13, 2008 9:17 AM
Subject: [gsp-2101] Control One Pedal problem

Hello,

I have posted this problem back on July 29th, but no one have
answered, so I thought no one get my message and decided to post it again.

I've got a following problem with my C1 controller.

When I use the footswitch for activating particular preset then the
unit "remembers" the state of the expression controller (instead of
the value stored in the preset parameters) and for e.g. the volume
increases to the full level while the presets are set to match the
level between the presets. I opened the controller and clean the dust,
I have done a complete reset of the GSP2101 and the problem persist.
It does not happen all the time and I think (but I'm not sure) that
not all of the presets reacts in this way. Lets say that when I change
continuously between two presets then half time the volume matches the
position of the footswitch instead of the written value. I also tried
to connect an external expression pedal and the problem still has been
present with a use of external pedal instead of the built-in one.

My unit is 3.00a/20 MHz, PPC installed. I have never experienced such
problem before. Some time ago the whole unit has crashed and the hard
reset was needed. The unit was then serviced and setup according to
the information from Dieter's page (test procedures).

Before I have had a controller that was worn a lot and I have recently
replaced it with the controller in as new condition. The controller
worked fine for 2 months and recently the problem appeared.

Could you please advice?

Cheers,
Filip