Question about Sharp R-510HW Microwave Oven

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Sharp R 520

If the door switch is out of alignment how do you adjust it. If you partially push the opener it works, or push the door.

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Take the case off, loosen the screws, and slide the switch holder a bit.

Posted on Jul 28, 2008

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The microwave oven start button does not work. If


You probably have a bad door switch or door switch mount and should see these files:

http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt
http://www.microwavedisplay.com/doorsw.txt

If it's not the switch or mount, you may need to adjust the door alignment.

If you still need help, to allow us to help you effectively (at no charge), please post a NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, and requote your symptoms, as you posted previously.

Dec 06, 2009 | Sharp R-1870 Convection/Microwave Oven

1 Answer

My sharp r520lw microwave stopped working.before it stoped working completely it had a problem with the door switch.if i lifted on the door it would work again.now it doesn't work at all.it won't even let...


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 switchor mount trouble can be caused by slamming the door or by opening thedoor while it's cooking without hitting the Stop pad first.

There areplastic mounts inside the microwave which hold the door switches andonto 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'sa broken tab on the switch holder, allowing the switch to rotate justout of position. This tab can be hard to see, since it is under thebottom edge of the switch.

One test that sometimes helps is togently lift up (and/or push down) on the door or handle as you try tostart it. If it works or tries to work, then it's a door switch mount ordoor alignment issue.

If you or someone you know decide to lookinto it, we have critical information on safety, disassembly and doorswitches at our site, and our link is at our listing here on FixYa:.

You can usually 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 only need a switch, you can order one from us for $5 postpaid.

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 with free advice and we'd appreciate your thoughtful rating of our answer.

Sep 12, 2008 | Sharp Microwave Ovens

1 Answer

Sharps microwave


This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

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.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can probably find exploded views and order parts by entering your model number (R-520JKF) here at the Sears parts site.

The best place to order Sharp parts is Tritronics.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Aug 21, 2008 | Microwave Ovens

1 Answer

Do you test your commercial microwaves for leakage? What standards do you comply with as far as allowable leakage?


As per a similar manual:

1. Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

2. Safety interlock switches: Primary interlock relay and door sensing switch shall prevent microwave radiation emission in excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission in excess of 5 mW/cm2 at any point 5cm or more from
the external surface of the oven.

You need to be sure that if the meter comes with a styrofoam cone tip, that should be installed or it will give high readings.

Also, the meter should be calibrated periodically, typically annually.

If the meter gets dropped or bumped, that may throw it out of alignment.

The most common causes of excessive leakage are loose or misaligned door switch mounts or hinges and physical damage to the chassis of the oven.

The most common cause of the misalignment of door switch mounts is slamming the door.

I would be sure my meter is set up and calibrated, then I would be sure my door switch mounts are aligned & tightened properly.

From a similar manual:

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor. If the door sensing switch, secondary interlock switch and monitor switch do not operate properly due to a misadjustment, the following adjustment should be made.

4. Loosen the two (2) screws holding latch hook to the oven cavity front flange.

5. With door closed, adjust latch hook by moving it back and forth, and up and down. In and out play of the door allowed by the upper and lower position of the latch hook should be less than 0.5mm. The vertical position of the latch hook should be adjusted so that the door sensing switch and secondary interlock switch are activated with the door closed. The horizontal position of the latch hook should be adjusted so that the plunger of the monitor switch is pressed with the door closed.

6. Secure the screws with washers firmly.

7. Check the operation of all switches. If each switch has not activated with the door closed, loosen screw and adjust the latch hook position.

After adjustment, check the following.

1. In and out play of door remains less than 0.5mm when in the
latched position. First check upper position of latch hook, pushing and pulling upper portion of door toward the oven face. Then check lower portion of the latch hook, pushing and pulling lower portion of the door toward the oven face. Both results (play in the door) should be less than 0.5mm.

2. The door sensing switch and secondary interlock switch interrupt the circuit before the door can be opened.

3. Monitor switch contacts close when door is opened.

4. Re-install outer case and check for microwave leakage around
door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Please write back with more details if you need further help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Aug 12, 2008 | Sharp Microwave Ovens

1 Answer

Fan would go when door opened. Now will count down on timer, but not run.


This is usually caused by either a bad door switch, a loose door switch mount, or a misaligned door.

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.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

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.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Aug 06, 2008 | Sharp Microwave Ovens

1 Answer

I have sharp carousel R-520JK microwave, the clock and other functions work, but it does not microwave/heat...


This is usually caused by either a bad door switch, a loose door switch mount, or a misaligned door.

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.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can probably find exploded views by entering your model number here at the Sears parts site. The best place to order Sharp parts is Tritronics.

I'm confident this will be a FixYa! We're happy to help you and we'd appreciate your thoughtful rating of our answer.

Jul 27, 2008 | Sharp Microwave Ovens

1 Answer

Sharps microwave


The door switches go bad...little micro-switches. Check them for switching on and off. Some are closed when the door is open, some are open when the door is open. It could even be that the catch has moved out of adjustment. If that isn't the problem, you have to consider the brain board which is usually so expensive that the microwave is not worth fixing.

May 12, 2008 | Sharp R-510HW Microwave Oven

1 Answer

Timer starts but nothing works


This is usually caused by either a bad door switch or a loose door switch mount.

Even though a door switch clicks, it may still be bad inside.

This can be caused by slamming the door or by habitually opening the door while it's cooking without hitting the Stop pad first.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

For Sharps, you can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

For other brands, you can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.

Jan 17, 2008 | Sharp R-316FS Microwave Oven

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