Kenmore Microwave Oven

My Kenmore microwave oven has an unusual feature: It runs when the door is OPEN ! And it often does not run when the door is CLOSED.

Update: 28 April 2015
So far, I have made six contacts to Sears to resolve this. And still nobody at Sears can locate a Sears decision-maker who can say YES to satisfying a customer - by agreeing to repair or replace this at Sears' expense.
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