Question about Sharp 2.0 cu.ft. 1200 Watt Microwave - R-530EKT Black 13.375"H x 24"W x 19.125"D
FAN RUNS AND LIGHT STAY ON AS SOON AS IT IS SWITCHED ON AT THE MAINS. AND ONLY SWITCHING OFF AT THE MAINS STOPS IT. OPENING AND CLOSING OF DOOR DOES NOTHING..COOKING OF FOOD ISNT AFFECTED BY THIS.
One of the relays is stuck. Hit it firmly and see if the fan turns off
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
SOURCE: Over the range microwave
I have the R-1460 in the same series with the identical symptoms. After reading MicrowaveSvc's solution I started taking apart to view the door switches and found the upper door switch to be the problem, but not a switch failure a support failure. A small bottom plastic support post that holds the switch in place was broken (probably from repeated use/abuse) allowing the switch to move when the door hooks were engaged, thus not actuating the button switch. Since the problem was mechanical rather than an electrical bad switch, I made a small support arm for the switch from an old plastic mechanical pencil and glued it in place to hold the switch in its correct position. Problem solved, microwave works! Thanks to MicrowaveSvc's description of door switches.
Posted on May 26, 2007
We repair these control units for $39.95 nationwide. Usually a new one is not needed.
We have info on our service, plus critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk
Posted on Nov 22, 2007
We have the R1480-series service manual for this model and have uploaded it to our site here to help you.
You will need the free Adobe Reader to view or print it.
Double-check your wiring against the "pictorial diagram".
The switches will have a "C" (common) terminal, and a "NO" (normally open) terminal, and some will have a "NC" (normally closed) terminal.
As long as those connections are the same and the voltage and current (amps) ratings are the same or higher, any number of switches will work.
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. This tab can be hard to see, since it is under the bottom edge of the switch.
It's easier to secure the switches with hot glue than to replace the latch heads, by the way.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Aug 09, 2008
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If one of the door interlock switches
is not switching properly or there is a condensation problem on the
sensor control panel, either can cause the turntable/light/oven to
come on even though the "Start" button has not been
depressed due to the wiring of the switches or it can take the mains power fuse out and stay faulty.
Check for faulty door switches and/or contaminated actuators.
Alternatively, the magnetron, supply or HV diodes can fail and take the mains fuse out.
I hope that helps.
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