Samsung NQ70M7770DS 7.0 Cu. Ft. Stainless Combination Electric Wall Oven

I purchased a Samsung model #NQ70M6650D combination microwave/convection oven in December 2019 from BestBuy. It was installed just before Christmas of that year. The price was slightly higher than what I wanted to spend, but I was impressed with the clean lines and all the optional ways of cooking. My family typically uses the oven maybe once a day and the microwave about three or four times per. After six months of daily use, I have formed a “less-than-enthusiastic” opinion of this product. Essentially, it should not have developed significant problems so soon out of the box.First, the convection system does not cook evenly throughout the interior. The oven has a significant hot spot towards the front right. Also, if you have multiple racks of food cooking on the convection setting, the top rack will actually burn well before the bottom rack comes anywhere close to finishing. I didn’t expect to see this since the oven is equipped with a total of two (2) convection fans instead of just one (1), as the competition provides. Apparently, Samsung’s fans aren’t moving any air. Although I’ve never seen temperature non-uniformity anywhere near this bad from Samsung’s competition, it’s not that big of a problem and can be easily compensated for. You just have to remember to move the food around inside the oven, switch racks occasionally, and add a few minutes cooking time.However, the most serious problem with this combo system is with the device that rotates the glass turntable inside of the microwave oven. This device ensures that whatever you’re cooking is evenly heated. If it fails, your food remains stationary on the turntable and part of it will be microwaved to a crisp while the rest could still be frozen. The device is identified as a “roller ring” in Samsung’s service manual. The roller ring is made out of brown molded plastic and has three small white rollers towards its outer diameter and a keyed hub in the center. The hub slides over an output shaft of an electric motor which provides the rotational movement. The problem is that the ring is made out of very low quality plastic and when it eventually cracks and breaks, everything stops rotating. I have attached three (3) photos. The larger two are of a failed roller ring assembly showing the overall size of the part. The third photo shows a close-up of a cracked hub. They always break the same way.Luckily, the roller ring can be easily installed and removed without tools. Unluckily, it appears to break every two (2) weeks. This is an average based on the four (4) rings that have broken in my oven since December. After the first one broke, I contacted Samsung’s Customer Service. They were very helpful and sent a replacement part free of charge. I liked that. What I didn’t like was that it lasted just two (2) weeks. I also purchased two (2) additional replacements from Samsung for $35 each (part #DE94-04028A. Save the number – you’ll need it). They each lasted no more than two (2) weeks. Each part’s hub cracked in the exact same way every time. Note that by this point, my family had refrained from putting anything heavier in the microwave than popcorn. So essentially, the microwave was useless to us. Brand new and useless! So if you purchase this oven, be warned that you will need to spend an additional $35 every two weeks to fix it.In an odd twist to this story, I still have a broken 20-year-old GE microwave in the garage. It was part of the old combo unit I had removed so the new Samsung could be installed. It originally came with a roller ring too. The GE ring is old, slightly discolored, in good working order, and almost identical. Believe it or not, the ancient GE ring actually fits beautifully in the Samsung oven and functions just fine. I’ve been using it since March (about 16 weeks now) and it performs flawlessly. It rotates and does not crack. So if you decide to buy the Samsung oven, I highly recommend you get your spare roller rings either from GE or a junkyard that has a lot of old GE equipment in it. Apparently twenty years ago they figured out how to mold a $35 piece of plastic that lasts longer than two weeks without cracking.Other than that, the Samsung’s steam bake feature is very nice and gets used. The convection feature in the microwave is also nice and gets used too. But all in all, the microwave is the weak link and it seems the corrective action would be so incredibly simple to implement. Just mold the roller ring out of a more durable plastic material like GE did. Done! Until then, Samsung has an inferior product with an avoidable nuisance problem that is going to upset absolutely everybody who uses it.If Samsung would like to respond to me (or send out a case of replacement roller rings), the serial number for my oven is #OB187WCM700269X. I can be contacted at the registration address.

I have had the 7770DS model for over 2 months. Does not have the microwave, but I have had no problems at all with this model. Flex duo is great when I need to cook multiple items at once. Keeps temperature seperate like pizza and a cassarole. The meals came out great. I had not used the Samsung service so I cannot comment on that issue. The Gormet control was pretty cool and having the wifi option when I am not close to the oven was great.

I intensely researched appliances and I wish I had taken the negative reviews for this unit more seriously.It looked great, but the microwave stopped working after only a month. After 6 weeks of the local Samsung service company trying to fix it (and 4 service calls) they gave up. Unfortunately Samsung could not replace the oven so they issued me a refund. I now need to find a similarly sized oven/micro to fit the cabinet cutout and I have been without a microwave for 6 weeks.Some more detail on what I experienced. As mentioned, the unit worked for a month and during that time the features were great. However the microwave sensors then appeared to fail and indicated that the door was open even when it was actually closed. This meant the microwave was not usable unless I pushed hard on the door while my meal heated up. I've had many less expensive microwaves that worked like champs for many years. A $3000+ appliance failing after a month is not what I expected.The Samsung service experience made this even worse. Wait time to call Samsung is often lengthy and their reps are often unable to help you directly. Many calls ended with, “another department will get back to you in 2-3 business days.” There is only one local Samsung appliance repair company in my area as well. All totaled, we’ve made 10+ calls to the local repair shop and Samsung and spent at least 2-3 hrs on the phone over the course of 6 weeks.You may not get a lemon like I did, but the poor service should make you think twice about ordering. If you search other reviews you’ll see similar mentions of poor customer service and repair issues with this unit. I cannot recommend this unit or any other Samsung appliance based on the service level I experienced.

Do not buy this. After 6 months the handle on the microwave broke off on one side. The repairman came and accused me of breaking it and refused to fix it.