Might have been better in a separate thread but the only way forward is to check all the components and visually inspect the wiring etc. For this you will need a meggar or multimeter and the ability to use it correctly, with the mains plug removed of course.
In the end i called a local repair shop, and he sent a man round to look at it and he said the protector needed replacing. He charged £35 for five minutes work and he was reluctant to let me see what needed replacing. . Is it about the right price for this type of repair?
Somehow I get the feeling I’ve paid over the top for this!