If it's ok when switched off at the cooker switch on the wall it will be the cooker that's the problem.
I would call an appliance engineer.
If you don't use the fan oven and switch the cooker off and on at the wall that will allow you to use it.
DS
I would call an appliance engineer.
If you don't use the fan oven and switch the cooker off and on at the wall that will allow you to use it.
DS