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If the high-low switch no longer works either the switch or PCB needs replacing.
If the motor powers up for a second when turns off and then dies it can also be a problem with the PCB.
The PCBs for Henrys can be expensive and hard to source but it can be easily bypassed. This will remove the high-low function but it will still work.
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Make sure it unplugged from the mains.
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Pull out the black clips on each side of the head.
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Remove the 4 outer Phillips screws
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Remove the cable reel from the top
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Remove the 3 inner Phillips screws
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Remove the plastic cover
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Pull the PCB out of its slot inside the housing
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Remove all of the wires from the PCB
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Pull out the red High-Low switch and remove all of the wires
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Remove the 2 wires from the on-off switch which connected to the rest of the vacuum cleaner.
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Connect the 2 white wires from the motor to the green on-off switch.
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Place the red high-low switch back in to its holder in the casing to fill the gap and prevent potential shocks.
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Optionally, an indicator LED can be purchased online to fill the gap.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
