Microwave auto-starts when door is closed

check the door lever

They is one of the DOOR SWITCH need to replace

The timer control has the problem so it need to be replace. But be sure you do not program the microwave to auto run when the door is close some microwave have that feature.
Hope my advice help you.

Check and change door interlock switches or check for condensation problem on control panel, (internal).
Hope that helps.

you might need to replace the door switch

Hello,

Check the oven door if it locks up, the oven has an automatic feature that when it is not closed properly it won't initialize. Since it heats up intermittently I think the heating capabalities of the microwave is still good, and this problem might be just due to something that is preventing it to operate. which most likely the the locks of the door.

Take it immediately to a local Microwave repair shop...looks like one of the circuits may have gone...otherwise switch off from mains

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This is usually caused by either a bad door switch, a loose door switch mount (which are pretty simple problems to fix) or occasionally a problem on the control panel.

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

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:.

The best place to order Sharp parts is Tritronics. You can call them at 866-779-5835.

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.

Sounds like an intermittent door switch or a loose door switch mount. Very common.

At our site, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information.

See our listing here on FixYa: http://tinyurl.com/yzjozk