frigidaire flat top oven 1999

We purchased a frigidare flat top stove in 1999, upon installation computer board started smoking and fried up, service man replaced with no explanation, this week while not in use, clock stopped working and oven no longer working, plus one of the stove outer top elements burned out within two months of purchase.

To get fixed, repair people want over $475, with only a 3 month guarantee, I will be throwing a basically new oven in the garbage, will never buy a Frigidaire again.