I have had the above dyson for a few years and have had no problems until now. The hoover is only gliding on the carpet and there appears to be no suction. I have replaced the brush underneath but still nothing. Using the tools is ok .... plenty suction there. The brush does not appear to be turning whilst hoovering and after a period of time I can smell rubber. Does anyone know what could be wrong before I part with any dosh for a new one. Anyone's help would be appreciated. Thank you