Is there a known fault that switches my Vax V-060 off?

My Vax V-060 vaccuum cleaner switches itself off after about 5 minutes use. It will not switch back on again but if I leave it for some time it resets itself and will work again for another 5 minutes. Is there a known fault (possibly specific to this model) that causes this? Maybe some type of problem with the motor or something that detects the motor temperature. I have recently had to replace a snapped roller drive belt. Could this in any way be connected? How do I test/repair this fault.