February 13, 2026 — An incident involving a Sharp SMC1662DS microwave oven has been reported, where the appliance allegedly began operating automatically upon the door being opened, without any prior interaction with the control panel. This malfunction, described as occurring multiple times, raises concerns about potential safety hazards and the reliability of the appliance’s safety interlock system.
Product Details
Product: Sharp SMC1662DS
Incident Overview
The incident, reported on January 24, 2026, details a concerning malfunction of a five-year-old Sharp SMC1662DS microwave oven. According to the consumer, the microwave unexpectedly started when the door was opened to place an item inside. This occurred without any prior touching of the control pad surface. Upon activation, the microwave’s fan began blowing, and the turntable started rotating. The consumer immediately closed the door and was unsure if the magnetron (the component responsible for heating food) had powered up due to not wanting to confirm this potentially hazardous state. This exact sequence of events reportedly happened three times out of approximately 15 attempted uses. The consumer did not directly contact Sharp regarding this issue.
Safety Concerns
The unexpected activation of a microwave oven, even if only the fan and turntable, presents several immediate and potential long-term safety concerns:
- Immediate Dangers: The primary immediate concern is the startling effect of a large appliance suddenly activating. This could cause a user, particularly a child, to recoil, drop hot food or liquids, leading to burns or cuts. More critically, if the magnetron (the high-voltage component that generates microwaves) were to activate along with the fan and turntable, it would pose a severe risk of microwave radiation exposure and burns. While the consumer in this report did not verify magnetron activation, the possibility remains a serious concern for any consumer encountering a similar malfunction.
- Long-Term Risks: A faulty interlock switch or control system that allows for unexpected activation could deteriorate further, leading to more dangerous scenarios. There is a potential risk that the magnetron could eventually activate while the door is open, or the microwave could turn on when unattended, potentially causing overheating of its internal components or igniting flammable items left inside.
- Who Might Be Affected: This malfunction primarily affects the person operating the microwave. However, children, who may not understand the dangers, are particularly vulnerable if they attempt to use a malfunctioning unit or are simply near it when it unexpectedly activates.
- Property Damage Potential: If the microwave were to fully power on with nothing inside, or with inappropriate materials, and remain unattended, it could lead to internal arcing, fire, and extensive damage to the appliance itself, the surrounding kitchen area, and potentially the entire home.
What Consumers Should Do
If you own a Sharp SMC1662DS microwave or any microwave exhibiting similar behavior, it is crucial to take immediate action:
- Immediate Steps: Unplug the microwave oven from the power outlet immediately. Do not attempt to use the appliance again if it is exhibiting unexpected behavior.
- Check Your Product: Verify if your microwave is the Sharp SMC1662DS model by checking the label, usually found on the inside of the door, on the back, or side of the unit.
- Prevention Measures: If your microwave exhibits any signs of malfunction, such as unexpected activation, failure to start, or unusual noises/smells, discontinue use immediately. Do not attempt to repair it yourself, as this can be dangerous and void warranties.
- Reporting Procedures: Contact SHARP ELECTRONICS CORPORATION directly to report the issue and inquire about potential repairs or replacements. You can reach Sharp’s Customer Assistance Center at 1-800-BE-SHARP (1-800-237-4277). Additionally, report the incident to the U.S. Consumer Product Safety Commission (CPSC) at www.cpsc.gov. Your report helps identify trends and prevent future incidents.
Manufacturer’s Response
SHARP ELECTRONICS CORPORATION provided a response on February 4, 2026, stating that the microwave’s safety interlock circuit and software are designed to prevent cooking operations from beginning unless the door is first opened and then closed, time is entered on the control panel, and the START key is pressed. Sharp suggested that the reported condition would likely not present a safety hazard for the user, as there are both magnetron and cavity thermal fuses designed to disable the microwave should it overheat. They theorized that the issue is likely a misadjusted or sticking interlock switch. In such a case, only the cooling fan, oven light, and turntable would operate, not the high-voltage section powering the magnetron.
Sharp noted that the consumer did not contact them regarding the issue.
Sharp’s Customer Assistance Center representatives provide expert product support to their customers. Help is available from 8am – 6pm Central Time Monday through Friday and 9am – 2pm Central Time Saturday and Holidays by calling Sharp at 1-800-BE-SHARP (1-800-237-4277).
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process. Farzan Law is a California based Personal Injury law firm focusing on protecting the rights of those wrongfully injured.
Licensed to practice law ONLY in California.
Contact us today for a free consultation: 424-325-3112
Our legal team has successfully represented clients in product liability cases involving defective appliances, automotive defects, medical devices, and consumer products. We work on a contingency fee basis, which means you don’t pay unless we win your case.
Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.