Things That Are Normal With Your Microwave Oven - GE Profile Spacemaker JVM1490 Owner's Manual

Before you call for service...
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Things That Are Normal With Your Microwave Oven

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Steam or vapor escaping from around
the door.
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Light reflection around door or outer case.
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Dimming oven light and change in
the blower sound at power levels other
than high.
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Dull thumping sound while oven is
operating.
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TV/radio interference might be noticed
while using the microwave. Similar to
the interference caused by other small
appliances, it does not indicate a
problem with the microwave. Plug the
microwave into a different electrical
circuit, move the radio or TV as far away
from the microwave as possible, or check
the position and signal of the TV/radio
antenna.