Rank: Member
Groups: Registered
Joined: 1/5/2008(UTC) Posts: 2
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My microwave looks, smells, and sounds normal but it wont heat. If i set the power to 50% i hear it hum and turn off but no heat. I checked the resistance of the capacitor and magnetron which were within spec. The diode however appears to open in both directions. It does not appear damaged in any way. Would a bad diode cause these symptoms thanks
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Rank: Member
Groups: Registered
Joined: 1/2/2009(UTC) Posts: 20
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Replace the Magnetron! I just did this morning (same unit exactly as yours with identical symptoms!) And you must test the diode with a 6-12V battery to get the correct results....forget about using an ohm meter to test it. If the diode is good, replace the magnetron.
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