Tumble Dryer Stopped Working In The Middle Of a Cycle?

Model: White Knight Sensor tumble dryer WK447

Problem: My dryer stopped working 20 minutes in to a cycle. So i left it to cool down. I tried it again. and nothing happened. So I turned the drum with my hands and the dryer started working again. But after 20 minutes in to the cycle it stopped.I have cleaned all the dust/fluff from vents and all inside the machine just in case it was over heating. Has in the past when the filter has blocked up it become overheated and the cut out button popped out. But this time the button has not popped out. Also within that 20 minute cycle before the dryer stops the clothes are warmish but not hot. Like they normally are.

Does this Problem sound like the capacitor?

Thanks

Sam
January 2009