Question about Whirlpool MH6150XMS Microwave Oven

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MH6150XMT Turntable and Magnetron do not engage

When I start my microwave the timer counts down, and the internal fan kicks on, but the turntable does not move and the magnetron does not engage. I would think it was a door switch but the fan engages. Is there something common to those two parts that the fan bypasses?

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Looking at the schematic from the mini-manual for this model, the problem should be the secondary (top) door interlock switch or its mount.

(Power-wise, the hood / cooling fan is further "upstream" from the turntable and high voltage section).

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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.

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 usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Jul 24, 2008

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