Hi guys any help please my Diplomat ADP3310 is not heating up when using the oven, the grill is heating OK but not when switched to oven setting, I recently purchased a new element not 6 weeks ago and had it checked in work by an electrician who put a supply to it and it heated up, he also checked the resistance which was 27.6 ohms so think element is fine, the only other thing I can think of is the switch itself, if it is how can I test it before purchasing a new one.