Henry Voltage Drop / Loose Electrical Connection

Display or indicator lights flicker when motor starts, but machine continues to run

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Possible Causes

Loose plug in socket, Worn power switch contacts, Loose neutral or live connection on PCB, Undersized extension lead

How to Fix / Troubleshooting

Safety: Unplug before checking any internal connections.

  • Check external connections:
    • Ensure the plug is fully inserted into a good-quality wall socket.
    • Avoid thin or very long extension leads.
  • Inspect power switch and terminals:
    • Check that spade connectors on the on/off switch are tight.
  • Check PCB terminals:
    • Look for loose screws or plugs on the control PCB.
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Repair Difficulty

Easy 2/5

Required Part

On/Off Rocker Switch
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