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Model: SMH77178STD	Brand: Samsung	Age: 1 - 5 years
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fellicianot1		#1 Posted : Sunday, February 22, 2009 1:48:49 PM(UTC)
Rank: Member Groups: Registered Joined: 2/22/2009(UTC) Posts: 3		I Have A Microwave That Is Not Heating The Food It Turns On But It Dosen't Heat The Food


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ApplianceJunk		#2 Posted : Sunday, February 22, 2009 4:12:12 PM(UTC)
Rank: Advanced Member Groups: Senior Expert Joined: 7/24/2007(UTC) Posts: 2,277		Maybe a bad high voltage diode.


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richappy		#3 Posted : Monday, February 23, 2009 3:41:24 AM(UTC)
Rank: Advanced Member Groups: Senior Expert Joined: 9/10/2007(UTC) Posts: 9,586 Was thanked: 2 time(s) in 2 post(s)		If you hear a loud hum from the high voltage transformer, remove power, temporarily short the high voltage capacitor leads, and remove the wire from the magnetron that goes to the high voltage capacitor. If the hum now stops when you turn it on, you have a bad magnetron, if not, you have a shorted high voltage diode.


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