How can I fix my Electrolux EKM11440KN?

Noticed the conventional oven light was on (husband may have knocked this on when using the grill). The display to the fan oven was dead as though no power going to it & could not turn off conventioanl oven, even when in off position. Fan oven will not work, display still dead, gas rings not igniting (atho will work when lit with match, ceramic rings are working.