We can put in the minutes and temp., then when we close the door the clock times down and the fan blows, but nothing cooks. Fridgidaire model cfmv156fmc. For a while if we put a piece of cardboard in by the door hinges, we could get the oven to work, but now even this won't help. Microwave is only 3 years old.

William Miller

• 9179 Answers
• Posted on Apr 21, 2008

SOURCE: inside the microwave the piece

Yes. This is the waveguide cover, and it needs to be there to protect the magnetron from damage.

The waveguide cover is usually about the size of a playing card and often held in place by a plastic rivet or held in a slotted opening.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

If your waveguide cover is burned or damaged, it will need to be replaced.

You can often find helpful exploded view diagrams and order parts by entering your full model number here or here.

Please write back with your brand and model number if you need further help.

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

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

SOURCE: microwave light and timer work, but no cooking

IF IT TURNS ON AND SOUNDS LIKE ITS COOKING IT IS PROBABLY THE HEART OF THE MICROWAVE THE RADIATION PART WENT OUT IT IS MORE RECOMENDABLE TO REPLACE THE WHOLE MOCROWAVE

William Miller

• 9179 Answers
• Posted on Dec 15, 2008

SOURCE: microwave does not heat-light, fan, clock work-

When you 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.

Door switch or mount trouble is usually 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 find helpful exploded view diagrams and order parts by entering your full model number here.

There should also 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.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

If you only need a switch, you can order a universal type here for $5 postpaid.

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

William Miller

• 9179 Answers
• Posted on Dec 25, 2008

SOURCE: Microwave Oven Does Not Start Cooking

This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

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

Door switch or mount trouble is usually 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 find helpful exploded view diagrams and order parts by entering your full model number here.

There should also 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.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

If yours is not shown at the parts site or manual site linked above, Please reply back with your brand and model number so we can help you.

If you only need a switch, you can order a universal type here 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 in about a week or so.

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

William Miller

• 9179 Answers
• Posted on Jan 18, 2009

SOURCE: Set up Oster Microwave

No, that is the "waveguide cover".

It provides very important protection for the magnetron.

And always keep it clean according to your manual's instructions.

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