DC40 Brush constantly on after yoke cable replacement

[SKvacston]

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Hello,

My first post and I would be very grateful if someone is able to advise as I am stuck. Initial fault:

1) DC40 had an intermittent brush motor whilst vacuuming. Disassembly showed that there was wear to the yoke cable. The white wire was split.

2) I replaced the entire yoke cable with that from a matching DC40 I have for parts.

3) I reassembled the vacuum. Powered on and the brush is now spinning. (Great I thought!)

4) However, now the brush does not turn off when in the upright position. Nor does it turn off if I press the grey button to activate/deactivate the brush.

5) I disassembled the vacuum again to make sure that all wires were connected correctly to the PCB where the yoke cable connected in case I accidentally disconnected a wire. These all look fine. I reassembled and the fault remains.[/li]

Does anyone have any suggestions on what the fault could be and how to resolve it? Prior to the yoke cable replacement, the brush would activate/deactivate normally with the button or in the upright position.

Best regards,
John
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[MVacs]

Behind the recliner swivel mechanism is a micro switch that turns the head on and off. That will be misaligned or the actuator left off or similar. The problem will be to do with that microswitch anyway.

[SKvacston]

Thanks for the reply and the tip. In the end it wasn't the micro switch, the fault was replicated when replaced. Instead, I replaced the printed circuit board it connects to and the fault was resolved. Thanks for the help though.