The previous posts were so helpful! We have a 18 yr old Thermador SMW272 unit with the microwave, warmer and oven. The microwave lost power, and was told by the appliance repairman that it was not the fuse, but the control board, which is no longer available. Thermador does not make a new microwave that fits this unit. The microwave was 14"H, 23 7/8" W, 19 5/32D. It is also important to note that the feet that need to be attached to the lower support shelf are 20" apart. I found a new PANASONIC SN965S - $179. It is exactly all the same dimensions including the feet. I took out the old unit. I had to drill small holes in the plastic feet to attach the screws to the lower metal support shelf. I then moved the ventilation metal from the old Thermador to the Panasonic. I used strong tape and it worked great. It was easy to pull off the trim and put it back. It took me the research time and then about 2 hours to do the installation (I am slow and non-mechanical). It saved me having to replace the whole unit till later.

I'm looking for a thread exactly like this one except the object is a thermador oven being the broken appliance in the 1 piece set (electrical display pad at top, microwave below, warmer below that and oven at the bottom). Warmer and microwave still working.

20 year old microwave component of my Thermador SMW272 bit the dust... Thanks to this thread above I utilized a Panasonic NN-SN966S (easily swapping trim) and it fit perfectly. Thanks all, for your guidance and instruction.

Did you buy the trim? If so, how did you attach it

Just use existing trim (see above posts). The visible surround grate just pulls off and gets popped back in, and follow previous posts advice for microwave mounting ... you will further see how to swap ventilation channel when you pull the old microwave.

Thanks to this post and others, we bought an LG 2.0 cu.ft. to replace our 16-year old arcing Thermador microwave. However, after a few months of LG usage, we found the power outlet for microwave and one of microwave plug's three prongs both burnt. We replaced the LG microwave as it was under warranty and the new one works fine in any other outlet. An electrician found only 87V in Thermador power outlet (we are in Canada). He did not want to replace the outlet because he was scared about screwing something in the control panel. Any suggested remedy here? We have control panel on top, then microwave, then warming drawer, and then oven. The microwave power outlet is on the ceiling of microwave slot, seemingly connected to the control panel.

Any update on a fix for your problem?

Any fix for your problem? My outlet has no power.

I have a Thermador SEMW272BS/02 with a MBBS/01 microwave (made in 2004) that stopped working. Many of the microwaves mentioned here are no longer made, so I had to try the newer ones:

* Panasonic NN-SN966S - didn't work for me. Overall dimensions were almost the same (slightly taller), but the feet and some of the screws in the back were not well aligned with the holes in the trim kit

* LG LMC2075ST - almost a perfect match! Feet position is good and the screws in the back and sides are mostly well aligned. It took some work (cutting and drilling) to make the trim kit fit, mostly because of the back bulge size. I also enlarged the sizes of the holes in the bottom peice of the trim kit so that the microwave feet can just slide in. I did try drilling into the feet and secure them to the bottom trim peice, but gave up after a I realized there's nothing preventing the feet from turning with the screw when I try to drive it in. Instead I just added some HVAC tape to secure it. I figured it's fine because there are screws holding it in the back of the microwave.

After reading all the messages here, and seeing the slightly different feet positioning in the two models above, I suspect that there are two different trim kits. The trim kit showing in Sergio Cuquerella's images seems very different than mine. If I had to guess, his trim kit would fit the Panasonic.

One way to tell which microwave would work for you, I think, is to measure the distance between the centers of the front feet. Mine measured about 47.5 centemiters (18.7"), which matches the LG feet. The panasonic measured about 51cm (about 20").

Hope this helps! Thank you all for the inforamtion you shared.

I want to thank everyone that has posted anything on this thread! I read them all and they were very helpful! One thing in common is that Thermador is not a customer friendly business. They are really over priced and under serving!

The only clue inside the 16-10-585 microwave was the FCCIC "Panasonic ACLAP 4M01" label. That led me to believe that Panasonic made the original box and that it is really just a countertop unit installed in a cabinet.

My original supplier said that we would have to buy the entire unit. He had tried to replace the microwaves but he just could not get one that would fit the rails and or the trim kit originally installed.

I tried my hardest to find the last unit listed, NN-SN966S, but could only get it on special order. So with a leap of faith I purchased for $279.98 a NN-SN96JS today at Home Depot. I asked for an open box one but they did not have one. If this did not work, they would take it back. Therefore, I was careful opening it and having removed my old one, after grinding down the rivets on the cabinet side, I laid them on their sides and matched the feet together. Wala! The foot print was identical and the dimensions of the box are all the same! Joy, joy, joy! I proceeded to tap the rubber feet and installed the tray. The vent sheet metal matched up perfectly. The screws in the back of the microwave have Torx screws needing a Torx screwdriver with a hole in the center. I got one out with my standard Torx driver, and had to use Vice Grips on the second one. I only replaced one and used a normal Phillips from the old unit. I used good old silver duct tape to secure the vent metal the rest of the way. The tray slid right in with some tight clearance on the left side. My wife plugged it in and I pushed it back with no problem.

I feel great about it!

We are still going to get a price on replacing the oven and change away from Thermador. Glad to help anyone if needed.

Dave F - Ohio

Well done . Love this forum. We replaced ours 7 years ago and now the replacement microwave isn’t working so we’re going to replace the door contacts and see how that goes. If that doesn’t work, we’ll have to replace the whole microwave like we did before.. thanks to the latest post, we’ll have a model to try!
Thank you everyone!
Wendy DC

So we figured out that it is much harder to fix a component in a microwave than the you tube “do it yourself” video leads one to believe. So we had to buy a new microwave… We’ve been down this road before so knew what to expect…as others have commented, there are different trim kits around your microwave depending on the Thermador model trio (microwave, warming drawer, oven) that you own … ours has the trim on the sides… so that requires the current model LG LMC2075ST as a replica to the original Thermador microwave (you can find it at Best Buy.) if your trim is top and bottom, apparently the Panasonic model Panasonic NN-SN966S mentioned in the earlier posts is the one that works for your configuration! (You can get it at Home Depot,)
We popped out the old microwave and took off the aluminum housing around it that we had customized to fit it, and reattached those to the new microwave., fit perfectly and took us less than an hour.
This site has saved us so much time, $ and energy.. Thank you ALL!!

Hello all fellow Thermador owners. I too am blessed with a Thermador SW272 with microwave. Initially, I opened the defective unit to discover a blown capacitor on the power module. After purchasing the replacement part on Alibaba, I tested the system to discover it would turn on and heat for only 3 seconds. I reset the demo mode to off to no avail. I'm thinking one of the door switches have failed resulting in the 3 second cook time. Well, enough time and money wasted, I'm headed to Home Depot to purchase the Panasonic NN-SN96JS. I sounds like an easy fix. After opening the Thermador unit, it appears to be all Panasonic parts. So, you think you're purchasing a higher quality Thermador to learn it's a Panasonic disguised as a Theremador. Good luck to all and thanks for the tips.

We also had the microwave break down in a Thermador SW272 combo unit that we piurchased 15 years ago. This is the second time that the Thermador microwave has required replacement, Several years ago we were fortunate that we were able to purchase a Thermador replacement from a major kitchen and bath company and easily replaced the old unit. This time the same company insisted that microwaves could not be replaced in these combo units and we would have to replace the entire combo unit. They said that the microwave was hard wired into the oven circuitry, which is total BS (even after I sent them a picture of the separate microwave outlet at the back of the cabinet). My high school senior grandson (who is an electronics wizard) verified this by safely disconnecting the 20A fuse on the microwave power recepticle and verifying that all functions on the warming drawer and oven were fully operational even with the microwave power outlet disconnected. Since we have a trim kit with top and bottom vents we purchased a Panasonic SN966S from Amazon ($259) and were easily able to install it using the existing mounting hardware, thus saving more than $10,000 from whatb the kitchen and bath company said that bwe had to do. This blog site was very helpful.

Great solution and very easy. I am glad to get some more life out of the SW272. Long term I still think it needs to be replaced since the oven is not working well. Has anyone found a combo unit that wil fit in the same space? It seems to be a non-standard size.

I had the same problem. My Thermador was from 2000 and lasted all these years. I took off the front assembly and replaced it with a Panasonic NN-SN96JS. All the screw holes lined up perfectly, there is absolutely no difference between the 23 year old Thermador and the 2023 Panasonic in terms of the case dimensions and screw alignments. It all fits perfectly. The only blemish is the 'Panasonic' logo on the front. :)

I had the same problem and the supplier said I was better off to buy a whole new unit. Instead I bought a Panasonic from Home Depot for $289 and had it installed in a couple of hours. I refuse to pay so much more for the Thermador label since the original unit was manufactured by Panasonic. New one has better temperature control and heats things quicker and more thoroughly. Thermador gets a lot of markup for their name.

Thank You to All that submitted information on Thermadore Triple Oven. I went to Home Depot today and purchased the Panasonic NN-SN96JS $ 279.00. I was able transfer some the necessary parts from Old Micro to New Micro relatively easy based on all the info on prior posts.

Took about an hour. Perfect fit and My Wife is very Happy too.

I have an old Thermador SEMW272 and having difficulty removing the failed MBSS/01 microwave. After removing trim & all visible screws it won’t slide out. The vertical sections on either side of the microwave (see photo) are connected at the top to other pieces that extend up behind the control unit above, with no direct access. I tried removing the control unit and found that it is connected at the top with screwed-on angle brackets rather than clips, so there is no access.

Any suggestions would be appreciated.

It will come out but requires some finesse. Angle it slightly, left side out more, and flex in the part on the left that causes the interference. When that edge clears it will slide out easily assuming the two bottom slide screws and the four corner clips have been removed.

Thank you for your reply, but unfortunately the SEMW272 is different than SMW272 and removing all the screws does not allow unit to slide out. It is locked solidly in place.

See the screen shot attached. The arrow shows the microwave chassis is connected to the chassis of the oven control directly above. The oven control is attached by “L” brackets that can’t be accessed from the front. I discussed this problem with an online tech and he indicated they had to remove the entire assembly for access. But, suggestions welcome!

When we changed out ours .. we had to take the entire unit out, meaning the microwave AND THE runners AND BRACKETS that it was attached to.. it’s like a sled and comes out as one big unit. (very heavy by the way) Then and only then were we able to detach the microwave and replace with the new one, make appropriate adjustments for the new microwave and slide the whole unit back in.. if that makes sense.

Thank you Wendy! Did you use a lift of some sort to pull & push, or just lots of struggling?

It is moderately heavy but an average guy can lift it out if someone else is there to unplug it. I just did one yesterday by myself so I could completely clean the microwave. I think you might just need to unstick the tray. Try placing a flat blade screwdriver at the lower right edge between the tray, that will slide out, and the chassis. Push and then twist the screwdriver slightly and that might get it to start moving.

My burly husband and I pulled it out and had a strong work table handy to put it on so that we didn’t have to put it on the floor.. keep in mind that as you pull it out you also have to unplug it. Once you get it out .. you’ll see that the microwave feet sit in holes in the bottom runners..very easy to unscrew or just lift out.. and some pieces are attached to the microwave that are part of the housing and are easy to take off and reattach on new microwave.
We’ve had to replace 2 microwaves in this manner. In the case of the initial change out of the Thermador microwave, we had to modify the housing of the sled framework in the back somewhat to accommodate the new microwave.. sounds complicated but I promise, very simple.. some tin snips did the trick to open up the back area a bit. Then it sits in the original position that the old one did .. in our case, the feet of the new microwave lined up perfectly to the holes already in the runners so it dropped in. (most recent microwave had caps over the feet, we took them off and again, slipped right into the holes.) We then reattached the other housing items (double sided utility tape will help you reattach) and slid back in to the wall .. keeping in mind you’ll need a person to help you plug it in as you’re inserting it which can take a little contorting to do since you have to hold the microwave close enough to plug it in but keep from blocking access when lining up the runners.. Again, it sounds complicated but I promise, it isn’t. The second time we changed out the microwave was even faster since the housing had already been adapted to the newer models. Good luck .. it’s totally worth the effort!!

I had already removed all visible hardware around the microwave several days ago, including runners & brackets and it is still fixed rock solid. See picture below. Have I missed something? I even sawed off the four bolts holding the microwave's feet in place and still nothing moves. The chassis sides continue up into the oven control unit directly above, which is also not accessible and this seems to be at least part of the problem.

Thus, it seems there is no choice but to slide out the entire stack (control, microwave, warming oven & oven) and work from behind. I have a lift table, so maybe not as bad as it seems.

Well, I took out the entire assembly (oven control, microwave, warming oven and oven). This was a last resort (>300 lbs.). I managed to free-up the microwave by removing the sheet metal screws on both sides of the cabinet adjacent to the microwave. Several of these screws were interfering with the microwave, holding it solidly in place. After removing the microwave, I reinstalled the screws since several are necessary (See photo). I plan to hacksaw them off before installing the new microwave! The second photo is an example of a dented area on side of microwave, caused by one of these screws.

Oh Brian… it sounds like your microwave swap was a much more complicated process than what we experienced … I’m so sorry! Whoever initially installed yours did so with the idea that you were never going to take it out, that’s for sure.
It sounds like you were still on target to accomplish the desired result, however
so well done! You’re a rock star and have now potentially helped someone else with a similar issue! All the best to you!

Two items that might be helpful to those with same issues in future:

(1) Since the feet on the LG LMC2075ST Microwave match the locations of Thermador’s mounting holes, the holes were drilled out to ½ “diameter, allowing the LG to lock in place w/o screws, tape, etc. The feet insert only about 1/16th inch depth into each hole.

(2) With no help plugging-in the power cord while reinstalling the microwave, a 6’ extension was added (w/same amp rating). This allowed plugging-in the microwave while it was still sitting on the counter. The cord was temporarily taped & routed through the open center channel (see photo). After the microwave was reinstalled, the cord was pushed-in as far as possible behind the microwave and any extra length was pushed into the channel.

This model from Home depot was a perfect fi! Panasonic Model # NN-SN96JS. Looks good too! Thank you for your help!

Hi all, thank you so much for this thread. We recently got hit by a massive power surge during a storm that fried most of my appliances (refrigerator, cooktop, microwave, toaster oven, coffee pot, etc.). I have the Thermador MCES/01 microwave atop the MEDMC301JP oven. The repairman pulled out the microwave (when I wasn't there) and declared it unfixable. I'm following this thread with positive anticipation that I can go buy a Panasonic or LG and drop it in the slot. I have a few questions that hopefully this group can help clarify:

1) my MCES/01 plugs directly into the oven itself. Is it ok to plug the replacement directly into the Thermador oven outlet?

2) it sounds like from this thread, given I have the MCES, that I likely need to go the LG route. My trim kit has some on both the top/bottom as well as the sides (see photo).

3) There are a few additional sheet metal pieces that must have been installed on the MCES/01 but I can't figure out exactly where they go. There are 3 pieces that mount the trim kit, but then there are two more pieces that I can't figure out. Any suggestions welcome!

Another huge thank you to EVERYONE who has contributed to this thread. So much info here for a very specific problem that we all share. I too have Theramador SEMW272BS/02 combo with a MBBS/01 microwave (made in 2004). The microwave went out about 3 months ago and I just wish that I had found this thread sooner! I ended up purchasing 3 separate microwaves trying to make them fit in the space and the to the trim/sheet metal spacers (luckily I was able to return all of them once I found this thread).

Big thanks to @Oren L your note about measuring the distance of the front feet was 100% accurate and I was able to get the LG LMC2075ST within the hour from the Best Buy near me. This was a total hallelujah moment (not only that I found this thread, but it was actually in stock). As others have mentioned, once you have the correct replacement, the trim fits just right (except for the back panel because of the back bulge) and the process is really quick and easy (about 1-2 hours).

For those of you who have searched through the bowels of the internet searching for this information... congrats, you have found the holy grail! You have probably been told by Thermador, home appliance dealers, and various repairmen, that what you're trying to do is impossible. This thread proves the power of the internet bringing us together to share information is so powerful. As others have said in the thread, this info will save you hundreds if not thousands of dollars and hours and hours of time (this isn't hyperbole if you've found this thread because you have the same problem).

If you gain valuable info here, please continue to pay it forward by posting your experience for the next person.

Has anyone replaced the Microwave from a Thermador SEMW302BP Triple Combo Pro Oven. It has wider side around the micro so I'm not sure if the replacement micros mentioned in the above threads will work. I bought my oven unit in 2006. see pic.

I also have a SEMW 302 needing microwave replacement.

I read through the comments above which were extremely helpful. As with the other models the thermador people told me i would need to replace the whole three tiered unit. Instead I pulled off the micro surround. The top corners just snap off(use a flat screwdriver to help pry it off) Mine had 3 screws at the bottom edge. You can only see them when you open up the warming drawer. Then my husband and I slid out the entire micro with all the metal venting attached There were a couple screws in the front to remove, the sled was a bit sticky so useing the flat screwdriver to loosen the sled and the whole thing came out. The micro was plugged in to the underside of the oven controls We removed the two upper corners that hold the micro frame to give us more room . we rotated the micro and the attached sled to reach in and unplug the micro. once we had the micro out we could dismantle the sled venting and attach it to the new micro..we bought the LG LMC2075ST for $207.00 at home depot. the feet fit perfectly in the bottom sled area i didn’t put back the upper venting portion so I hope thats ok,, anyway it fits beautifully. I’m so thankful I found these comments on Houzz

Janet, Just as I was giving up you gave me all the direction I need Thank you so much.

I went on line and saw the LG LMC2075ST is 13 9/16 high and our existing in our Thermador 302 is 12 1/4 high. You had no problem with the height?

Well my old micro is no longer with us. seems like it was about 13” h, not sure. I would measure the interior window of the trim kit and make sure it fits. the feet of the new LG micro fit inthe hole of the lower sled venting. we needed to enlarge the holes a bit so the feet would drop in the holes. we didnt use the existing bolts that are used to secure the old micro. i put some duct tape on the underside where the feet protrude. the micro seem secure plus you screw down the bottom sled in the front. I’m not sure if the overall height includes the feet. If so thefeet will take up some of the height because they are down in the holes of the bottom sled. Hope all this makes sense.

Here’s a pic with the new micro.

They were both the same height. I would like to let everyone with the Thermador series 302 combination unit know about your solution. THANK YOU!

SMW 272(no warming drawer), replaced microwave with LG LMC2075ST. The little plastic feet popped right off and the bolts from the old unit screwed right in, securing the unit to the sled. As others have stated, the vent duct had to be modified with tin snips because the bulge on the back of the new unit is different than the old one. I then secured the duct with foil tape.

Replaced the microwave in the Thermador stack SEMW272 with a Toshiba

WSI-EM23AST. It fit perfectly.

I found its manufactured by Panasonic so I just bought a Panasonic for under $300 and it fits the same. Thermador is so customer unfriendly.

So glad I found this discussion! I successfully replaced the microwave on a SMW272 range / warming drawer / microwave combination purchased in 2000 or 2001.The $250 Panasonic NN-SN96JS from Home Depot (link below) is a perfect fit, except the feet do not hit the elevated rails, and the rails had to be slid back a bit to accommodate the depth. The microwave had already been replaced once before, so the vent, etc. had already been removed and I don’t know if the rails and trim kit were original. Pictures for reference.

Home Depot

Internet # 317341343

Model # NN-SN96JS

Store SKU # 1006543888

https://www.homedepot.com/p/Panasonic-2-2-cu-ft-Countertop-Microwave-in-Stainless-Steel-Built-in-with-Cyclonic-Wave-Inverter-Technology-and-Sensor-Cook-NN-SN96JS/317341343

So, @HU-896005219, how did you manage to fix the situation when the feet did not hit the elevated rails? Did you use different support for the feet instead of the rails? Do you happen to have a picture? We replaced our MBES/01 microwave with LG LMC2075ST (open box) item, it fit perfectly but the microwave conked out in exactly a month. After reading some reviews on LG LMC2075ST which is no longer being sold, we decided to switch to Panasonic brand. So we got a Panasonic NN-SD987SA and not only the feet are not sitting on the elevated portion of the bottom sheetmetal but the height is a bit off (the new microwave is taller than the original version and LG LMC2075ST) and the trim opening top below the microwave top preventing it to be opened after we put the trim in.

Others, any suggestions to make this work? We are thinking of taking the sheet metal nottom support off and instead use some 2x4 wood supports underneath to reduce the height of the microwave so that the door can be opened easily after we put the trim

Another SEMW272 (2004) Microwave became unsafe to operate with arcing. Even after replacing the Wave Guide Cover, which worked for about 2 weeks, the microwave started arcing again. Thanks to this post, I didn't purchase the MBCS ($899+shipping), which by looking at the measurements, would have fit in the opening from the old microwave perfectly fine.

Instead, I went out and purchased the Panasonic NN-SN96JS from Home Depot for $279 and came home to make it fit. I removed the trim and then the old microwave from the sliding stand and started figuring out how to make it work. The feet lined up on the edges of the slide, but the holes from old microwave feet did not line with the Panasonic. I had to mark off the feet from the Panasonic microwave and then using a step drill bit, to get to 5/8" so the feet would drop into the holes and hold the microwave in place. I also had to bend the front edge of the slide which used to go behind the door on the old microwave and had 2 screws which held it in place.

I then mounted the venting duct work from the old microwave using metal tape to hold it to the Panasonic Microwave. I did have to use some tin snips to adjust the duct work to match the Panasonic microwave. I was able to slide one side in, plug in the microwave into the old outlet and then slide it all the way in. Using the 3 screws for the previous trim kit, I installed the trim kit and screwed it in place and I was done.

Matthew Glotzbach - what did you end up doing to replace your MCES/01? I have the same issue, my microwave went out but my oven is working fine. I'm being told that I need to replace the entire unit (oven and microwave). Thanks!

I replaced it with the Panasonic NN-SN96JS from Home Depot. Link is below.

Home Depot - Panasonic NN-SN96JS

There was a little work to replace it. Removing the old one. Findind the best fit for the Panasonic MW to fit in there. The pic I have above is it already replaced.

Just wanted to thank the original poster. I just replaced my Thermador microwave with the Panasonic NN-SD987SATH ($229 at Best Buy). Replacement took less than an hour. Saved me thousands! Thank you!!!

Following up on Janet Call’s successful experience above:

I too had to replace the microwave in the SEMW302BP, but learned that LG has discontinued Janet’s replacement, the LMC2075ST. The newest version, the LG MSER2090, fit easily and perfectly. (On sale at Lowe’s for $209, regularly $259.)

Here's a photo with the new microwave installed.