Replaced heating element - still no heat! Zanussi TC484W tumble dryer?

Please help - my tumble dryer was spinning but not drying with heat & following advice, I replaced the heating element. The problem is still the same, it spins, but there is no heat. One website suggested replacing the thermostat....please can you tell me where to find it on my machine? I can't seem to find it at all & am ready to sling it out the door. Many thanks :)