jenn air oven

Oven Repair (including Ranges and Cooktops)
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hello , my jenn air oven, model jjw8530aab is givin me troubles. three or four yrs ago the digital display went blank . the repair man told us it would cost mor e to fix than a new one. so we just use it as is. then last week we auto cleaned. after the two hour cleanin the door stays locked and the fan wont shut off. i turne the pow er of to it and back on. still the same. now touch buttons will work . repair man sais it would cost six hundred to twelve hundred to fix. yester day i pulled firmly and the door came open. but can not use oven . fan still runs and every thing else is dead . wha t can i do the fix this.