Question about Sharp R-1480 Microwave Oven
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On these models, the problem is usually a broken tab on the upper door switch mount.
This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.
Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.
There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. Other times, it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.
You can probably find exploded views and order parts by entering your model number here at the Sears parts site. The best place to order Sharp parts is Tritronics.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.
We're happy to help you and we'd appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
Posted on Jul 23, 2008
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