My Hotpoint under-counter fridge began freezing everything inside it, including cucumbers apples etc. Not good. I realised the thermostat was at fault-it was 10 years old- so I sent for a replacement. It came within 3 days and took 20 minutes to install. My fridge is working as good as new. Doing it myself saved me well over £100 and was very easy. Full instructions can be found on YouTube. Anyone with an ounce of sense can do it and no special tools needed.