I have a Tecnick TKC 8526/2 Electric Double Oven which is 3 Years old. When using the grill it goes off after a couple of minutes of cooking, I then switch off and let it cool a while then switch on again. some times this will work and other times it won't, also the switch (knob) appears to get hot.
would this be a thermostat problem and can I repair it myself or does it have to go back to the supplier.

Regards ****

Ovens - Tecnik - TKC8522 Electric Double Oven