Introduction

This will repair a non functioning shoulder switch by dismantling and cleaning.

    • Remove the base of the unit and switch activating button as detailed in many other guides.

  1. Remove the plastic cover over to reveal the pcb with the switch mounted on it.
    • Remove the plastic cover over to reveal the pcb with the switch mounted on it.

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  3. Remove the rubbery button from the switch with a small screwdriver by carefully prising it out. Using the screwdriver, prise open the steel cover on the switch. Invert the switch so that the small disc in the switch casing falls out through the gap. Remove the rubbery button from the switch with a small screwdriver by carefully prising it out. Using the screwdriver, prise open the steel cover on the switch. Invert the switch so that the small disc in the switch casing falls out through the gap.
    • Remove the rubbery button from the switch with a small screwdriver by carefully prising it out. Using the screwdriver, prise open the steel cover on the switch. Invert the switch so that the small disc in the switch casing falls out through the gap.

  4. Clean the contacts visible inside the casing by scraping gently with the screwdriver. Now clean the concave side of the dished disc with fine wet and dry paper. Replace the disc back into the casing. The concave side should face toward the contacts in the switch, and close the switch back up by gently squeezing with a pair of small pliers.
    • Clean the contacts visible inside the casing by scraping gently with the screwdriver. Now clean the concave side of the dished disc with fine wet and dry paper. Replace the disc back into the casing. The concave side should face toward the contacts in the switch, and close the switch back up by gently squeezing with a pair of small pliers.

Conclusion

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

Stefan Duda

Member since: 04/15/2011

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