Question about KitchenAid KCMS135 Microwave Oven

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Door wont open! Help!

Hi, I have a built-in kitchaid kcms135 (stainless face) that is about 9 years old. I was heating my morning coffee then went to push the button to open the door and heard the sound you hate to hear when you have yet to have your first morning, clunk. Something inside had snapped off and you could hear it fall. Now my door is locked, the button is non-op, and my coffee is inside waiting for me....Not to mention my whole family will now starve because we can't cook anything except microwave food... :-) Is there anyway to take this baby apart since it's a built-in? And say I do slide it out of the cabinet....How do I get the blasted door off? Does anyone have a schematic and/or an idea of what parts I'll need? I'll happily buy them from you if I can avoid having the maytag man come visit our house! Thanks! Coffee-less in CA

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Re: Door wont open! Help!

The first step is to be sure it's unplugged from the wall outlet. I have critical safety & disassembly info at my site, but in a nutshell: - If it's an over the range design and has a grille across the top, that will have to be removed. It will have one or more screws and/or clips. Then you remove the now visible screw at the top of the control panel frame, then lift up and forward. Don't pull hard on the wires. If you disconnect them, mark them exactly, and look out for locking connectors - don't force them. You can then see the door "hooks" and get the door open. (If it's a counter-top design that's built in, it will need to come out the wall and have the outer cover removed). You can see my listing here for a link to my critical safety info and disassembly info: For exploded views and to order parts (the back pin of the handle button probably broke off) visit:

Posted on Jan 26, 2007

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The microwave was heating up some coffee I stopped it and opened the door and it went completely dead. Nothing at all works. Should i try and fix or do I need to buy another microwave?

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Have a 12 year old kitchenaid Superba stainless steel built in microwave. I suddenly stopped and "door' lights up on display. Door is shut hear clicking by left side may be a latch issue. How do you fix?

Hi - it is 12 yrs old so parts may not be available for it.

If its a door problem, then its really a door latch switch or switches that has failed. Time involved in removing case, then switches then checking them all then finding replacements at ?? cost is uneconomic.
Please consider getting a new machine - probably use less power, have more features and work a darn sight better than this old one.

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A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking TCOs or thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

The TCOs you need to be concerned usually with have all black or white wires only. Please reply with photos if you have questions.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

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

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.

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

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

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Sir, I have a 2 years old SANYO microwave with a stainless steel body. Some days ago it stops working. It is running well but does not heat up anything. I appreciate your comment and suggestion sent to my...

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, linked below.

You can contact Sanyo customer service and find an authorized servicer here:

Feel free to write back if you need more help.

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

William E. "Ed" Miller, AS-EET †
Microwave Oven Control Panel Repair Nationwide $39.95

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