Hope someone can point me in the right direction here.
As per this video, the brush is only firing in short bursts when the power on button is pushed, sometimes at the start and sometimes at the end (I.e. when it is being switched off).
I stripped down the brush head assuming it was blocked at first but that was a blind alley. I've tested the power supply at the connector and had 240v constant on the meter.
I've also tested the DC at the motor terminals and that was showing 300v but it was switching on and off in bursts as the power supply button was pushed. I have already bought a new PCB from Manchester vacs assuming the original ocb was faulty, but I've got the same fault on putting the new one in.
Any suggestions as to what the fault might be? It doesn't feel like it's the motor as the motor seems to be doing just what the inbound DC power is telling it to do, but I'm a long way from being technically insightful as this is the first vacuum I've ever done any disassembly of!! Any help gratefully accepted!!