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

I want to share an experience I had last week with one of my 2101s.  The green display did not illuminate when I powered up.  If I tapped the display it would either come on for a while then go off or it would flicker.

Anything to avoid shipping my 2101 back to DigiTech for repair.  I took off the top cover (we all know how to do that, don't we?) and detached the front panel from the main chassis.  No sign of any loose wires.

The display is mounted on a green circuit board (PCB).  Just to the left of the display (looking from the front) is a small white-colored pot (variable resistor).  It's located between the display and the hole for the power switch.  I assume this pot alters the display brightness or contrast.  I noted the original orientation of the pot and then used a small jeweller's flat-head screwdriver to spin it a few times back and forth.

After restoring the pot to its approximate original position, the display now works.  No flickering, no repair bill.

One final note.  You might be able to twiddle (a technical term for adjust) this pot with a small screwdriver without having to detach the front panel from the main chassis.

I hope this saves someone else from down time and some repair expense.

Hey M&M:

Your reply reminded me of the time, back in college, that I was asked to build a light show for a mobile disco.  I used an old washing machine timer to sequence the lights.  It worked like a charm.  Everyone looked forward to second rinse.




--- In gsp-2101@yahoogroups.com, M M <strategy400@...> wrote:

>
> 
> Awesome tip thanks. Kind of like having to 'twiddle' the volume knob to get both channels outputting properly.
>  
> I had to replace the dead LCD in my quadraverb and used a donor pot (aka variable resistor) from an old non functional CDROM drive (the volume pot for the headphone jack). Had to install the pot because the LCD (salvaged from a dead laser printer) had a problem with the backlight getting too bright/hot and making the LCD go black. So far its been working for a couple of years.
>  
> Perish the thought of one of my beloved 2101's dying one day. There really isn't much out there to replace it and having to relearn an interface, ick.
> 
> 
>  
>  "Never put off till tomorrow what you can ignore entirely."
> 
> 
> 
>  
> 
> 
> To: gsp-2101@yahoogroups.com
> From: me@...
> Date: Mon, 4 Apr 2011 02:49:57 +0000
> Subject: [gsp-2101] Display on the Blink
> 
> 
>   
> 
> 
> 
> I want to share an experience I had last week with one of my 2101s. The green display did not illuminate when I powered up. If I tapped the display it would either come on for a while then go off or it would flicker.
> 
> Anything to avoid shipping my 2101 back to DigiTech for repair. I took off the top cover (we all know how to do that, don't we?) and detached the front panel from the main chassis. No sign of any loose wires.
> 
> The display is mounted on a green circuit board (PCB). Just to the left of the display (looking from the front) is a small white-colored pot (variable resistor). It's located between the display and the hole for the power switch. I assume this pot alters the display brightness or contrast. I noted the original orientation of the pot and then used a small jeweller's flat-head screwdriver to spin it a few times back and forth.
> 
> After restoring the pot to its approximate original position, the display now works. No flickering, no repair bill.
> 
> One final note. You might be able to twiddle (a technical term for adjust) this pot with a small screwdriver without having to detach the front panel from the main chassis.
> 
> I hope this saves someone else from down time and some repair expense.
>

Thanks for the great tip! Haven't had that problem yet, but will remeber this if I do. Was it much work to detach the front panel from the main chassis? 

Also, anyone have any tips on fixing a non-responding switch on the Control One foot controller? I had some problems with the number two switch awhile back, so I took the foot controller apart and tried working some contact cleaner into the switch, which seemed to help for a couple of months, but now it's totally dead. Not the easiest switch to access either. Anyone have similar problems and find a solution?
Thanks, Derek



--- In gsp-2101@yahoogroups.com, "gdmpearson" <me@...> wrote:
>
> I want to share an experience I had last week with one of my 2101s.  The green display did not illuminate when I powered up.  If I tapped the display it would either come on for a while then go off or it would flicker...