My Zanussi TCE 7124 W has started to constantly 'switch off' during drying - sometimes after only a few seconds. The green light often doesn't show at all and I just can't get it to start again, even after switching it off altogether. I'm guessing it's a sensor problem but is this something I can fix myself? If not, is it worth getting an engineer to fix it?

Kim in Norwich, February 2009