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Digitech JamMan Stereo Potentiometer Replacement

What you need

  1. Digitech JamMan Stereo Potentiometer Replacement, Assess the damage: step 1, image 1 of 1
    • Each knob in the unit controls a potentiometer inside. The picture shows the loop level knob cracked.

    • Besides the unit is the new potentiometer and knob that will replace the broken ones.

  2. Digitech JamMan Stereo Potentiometer Replacement, Remove the knobs: step 2, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Remove the knobs: step 2, image 2 of 2
    • To separate the top and bottom parts of the enclosure, all the knobs need to come off.

    • The knobs are held by pressure; pull to remove them, or use a small screwdriver as a lever.

  3. Digitech JamMan Stereo Potentiometer Replacement, Unscrew the bottom part of the enclosure: step 3, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Unscrew the bottom part of the enclosure: step 3, image 2 of 2
    • Remove the four screws at the corners.

    • Remove the screw at the center of the bottom plate.

  4. Digitech JamMan Stereo Potentiometer Replacement, Separate the top and bottom parts of the enclosure: step 4, image 1 of 1
    • To separate the enclosure parts, use a small screw driver as a lever.

  5. Digitech JamMan Stereo Potentiometer Replacement, Unscrew the board with the potentiometers from the enclosure: step 5, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Unscrew the board with the potentiometers from the enclosure: step 5, image 2 of 2
    • Slide the top part of the enclosure enough to access the five screws that you'll need to remove.

  6. Digitech JamMan Stereo Potentiometer Replacement, Disconnect the cable: step 6, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Disconnect the cable: step 6, image 2 of 2
    • This is a delicate cable that can be broken if not handled carefully.

    • First, pull slightly the black plastic part of the connector. It only slides a little bit, enough to let the cable loose.

    • Pull the cable from the connector. The black plastic is not part of the cable, it stays on the board.

  7. Digitech JamMan Stereo Potentiometer Replacement, Prepare for desoldering: step 7, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Prepare for desoldering: step 7, image 2 of 2
    • Time to desolder. A soldering clamp is always a handy tool for the job.

    • Pay attention when flipping the board, make sure you know the potentiometer you want to work on. Double check, and triple before desoldering!

  8. Digitech JamMan Stereo Potentiometer Replacement, Desolder the potentiometer: step 8, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Desolder the potentiometer: step 8, image 2 of 2
    • The parts to desolder are very small, I find it easier to cut a small piece of desoldering wick and handle it with pliers.

    • Apply a bit of flux to the wick to help it absorbe the solder from the joints.

  9. Digitech JamMan Stereo Potentiometer Replacement, Check the damaged part: step 9, image 1 of 2 Digitech JamMan Stereo Potentiometer Replacement, Check the damaged part: step 9, image 2 of 2
    • After i removed the pot, I cracked it open it to see how was it actually damaged.

    • As mentioned in the intro, it was a heavy object that fell on top of the knob that caused this.

    • Before reassembling, check with a multimeter that all connections are good and that there are no shorts between the pins of the new part.

Conclusion

To reassemble your device, follow these instructions in reverse order.

4 other people completed this guide.

palako

Member since: 02/01/15

829 Reputation

6 Guides authored

3 Comments

please can you clarify I only need to undo 5 screws on the bottom to separate the bottom from the top

john brown - Reply

You need to take the knobs from the front and then yes, just the five screws.

palako -

Where did you find the parts?

dmartens - Reply

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