Eureka Trigger Switch or Control Logic Fault

Vacuum runs only in short bursts when the trigger is held; power cuts in and out rapidly.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Worn trigger microswitch, Loose trigger linkage, Faulty control PCB, Contaminated switch contacts

How to Fix / Troubleshooting

Safety first: Remove the battery before opening the handle or trigger area.

Steps to try:

  • Check trigger feel: If the trigger feels loose or does not click, the internal switch may be worn.
  • Clean around trigger: Use compressed air to blow out dust from around the trigger mechanism.
  • Open handle (advanced): Remove screws from the handle shell and carefully separate. Inspect the trigger switch and linkage for damage or misalignment.
  • Replace switch or handle assembly: If the microswitch is faulty, replace it or the entire handle/control assembly, depending on parts availability.
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Repair Difficulty

Hard 4/5

Required Part

Trigger Switch
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