Just used electric cooker to cook a pizza and the cooker just lost all power. The lcd display works on the front but there is no power to the cooker element or the grill element. The fuse hasn't tripped in the fuse box. Any ideas ? Do you think I need to look for a new cooker. It is now 10 years old but in VGC. I will repeat......only the LCD works on the front. NOTHING ELSE....