Our 12 years old Indesit gas oven keeps going out probably around 4 times during a 45 min cooking period. It lights up fine and we've no problem with the hob. Aside from getting a new oven does anyone have any advice as to what it might be? The gas engineer (without visiting) said that the no longer make parts. Just thought I would post as a second opinion before looking for a new oven. Thanks.