My light goes off and on every 15 seconds constantly as soon as you start it. I thought that's just how it works until I read these comments. Now I think it's broken. I better go turn it off.

This is how it works. It stays on until it reaches the desired temp then turns on and off to maintain temperature - the light only has one setting, it doesn’t get hotter or cooler, so the only way it can regulate is by being on or off. It’s working fine.

HI Patricia

Any Kmart store should have them, though it is best to ring them first as they are not always in stock. The link below will give you all the stores details.
https://www.kmart.com.au/store-detail/Midland?utm_source=google&utm_medium=places&utm_content=midland&utm_campaign=googleplaces