Hi I have Frigidaire Model PLMVZ169GCA and my microwave all of the sudden stopped working. The turn table is not turning while the clock continues to count down. I don't hear the microwave make any noise. I was told the the turntable motor needs to be replaced (Part AP3770128). I ordered the part today but I need help in replacing this particular part. Is this difficult to replace on my own? Kindly someone help me replace this motor. I do not want to purchase a new microwave becuase this is only less than 2 years old.