If the oven temperature has become difficult to control which is leading to either overheating and burnt food or lukewarm temperatures which are not hot enough to cook anything properly, this is likely to be an issue with the thermostat. While the thermostat is easy to replace in theory, there are surrounded parts which are easily broken if you don't know what you're doing so it's advisable to get a specialist to fix it for you or you could be in for a big bill. Call an appliance repair engineer and as long as you book through a reputable company, your oven should be fixed in less than thirty minutes and they should come at a specified time to suit you. Don't suffer without your oven, instead hardy on for com faults and their quick fixes but remember to always put safety first and if the repair is anything more than a simple replacement, it's janek calling in a professional who is qualified to amalie out broken oven repairs.

When the oven's light and fan come on but it doesn't heat up this is usually a sign that one or more of the elements is broken and you should not try to fix this yourself.