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.