Took a Philips toothbrush back to Boots, their 1 year guarantee had expired but luckily (so I thought) there's a Philips 2 year guarantee .. but you try and find out what to do and how to use it on their support website - impossible - almost to the point of them being evasive.. I entered my product number what seemed 10,000 times - and went round in circles - they simply don't want you to return anything.