The rotating tray in the microwave ensures even heating and cooking. Due to the rotation of the microwave, all parts of the dish will be heated equally, this is especially important, for example, for uniform defrosting of food. Below we will consider in detail the reasons why the plate does not spin in the microwave and what to do in such cases.
Tray installed incorrectly
If the plate stops spinning in the microwave, the cause may be that the plate is too large or a piece of food is too large. They can come into contact with the side walls or the door of the stove, thereby preventing the platform from rotating. In some cases, due to rotation, the food or plate can move diagonally out of the center, as a result resting against the wall and preventing the tray from moving. In this case, it will be enough just to correct the dish being heated, cut a large piece into several parts, and replace the large container / plate with a smaller one.
The instructions for use always indicate the maximum weight of the dish that can be reheated. If the allowable weight is exceeded, the microwave oven can function normally, but the engine will operate at maximum power, which leads to its accelerated wear and rapid failure.
Another reason why the plate does not rotate is if it is not correctly installed on the sleeve. On the reverse side there are protrusions that fit into the sleeve. If there is no clutch, the engine can spin, but the torque will not be transferred to the plate, and it will remain stationary. It will be enough just to move the pallet a little in rotation or diagonally so that it “sits down” in its place.
To improve rotation, a plastic roller is installed under the plate, which ensures smooth movement. Sometimes the reason that the plate has stopped rotating is plastic wheels. They can get food debris or crumbs that jam the wheels, preventing them from spinning. Then it will be enough just to wash and clean the roller. Over time, plastic wheels wear out, so the roller can be replaced with a new one.
If the cymbal still does not turn, then there is a problem with the motor or no power.
In some models of microwave ovens (primarily the old model), a burnt out light bulb can cause the tray to stop rotating. It’s all about the design features, if the light bulb is connected in series to a common electrical circuit. As a result, its burnout leads to a circuit break, and electricity stops flowing to the engine. The problem is solved by replacing the lamp.
In most modern microwave ovens, electric lamps with an E‑14 base are installed, having a power of 20 watts. Replacing them is quite simple, the process itself is described in detail in the instruction manual.
All work on replacing parts, checking the serviceability of internal wiring and the engine must be carried out after de-energizing the microwave oven!
See also - Microwave works but does not heat food: what to do?
Poor contact is one of the most common causes of appliance failures. After removing the microwave casing, we carefully examine whether all the wires are connected. We pay special attention to the terminals of the electric motor. If they show signs of burning or corrosion, they must be disconnected, cleaned, reconnected and pressed well with pliers. Possibly due to poor contact, which caused resistance to rise, the engine could not run at full power.
If visually all the contacts are in order, then the possible cause of the failure is a malfunction in the control unit. Most often, in this case, some more functions may not work, and the oven itself is unstable. The main reason for the failure of the control unit is instability and voltage drops, which can be caused by fluctuations and current surges in the network. In addition, some elements may have failed due to water/moisture ingress if the microwave oven has been improperly serviced.
If after all the above operations the breakdown has not been eliminated, the malfunction is most likely related to the operation of the engine. If the microwave oven is still under warranty, then you should not repair it yourself, but should be taken to a service center. Broken seals will cause failure to repair the problem free of charge, as provided for by the service guarantee.
A motor failure is the most common reason why a plate in a microwave oven stops rotating. In this case, there may be several options:
- a gearbox is a set of gears that transmit torque from the engine directly to the plate. In older models, the gears were made of metal, so the likelihood of them breaking was minimal. In more modern models, metal was replaced with plastic, so the likelihood of gearbox failure has increased dramatically — the teeth (especially under heavy load) wear out and wear out.
- motor shaft — transmits the force from the gearbox to the rotating platform. Usually it is made of plastic, if the plate is loaded above the specified norm, then it can simply break.
- engine breakdowns — most often, they are caused by a short circuit in the motor winding due to the ingress of water or pieces of food. When the winding is closed, the motor starts to heat up very much, one of the main signs of burnt wiring is a sharp characteristic smell of burnt wiring. You can accurately determine the nature of the malfunction only using an ohmmeter. If the value of the measured resistance is very large or even goes to “infinity”, then this is clearly due to broken wiring.
Troubleshooting associated with a gearbox or motor is associated with the complete replacement of these elements. In principle, if you have basic knowledge in electronics, replacing them will not be a problem. New parts can be ordered online or in a store and then, using the tips on the video, you can install it yourself.
Otherwise, it is better to use the services of the after-sales service. At the same time, self-determination of the reason why the pallet stopped rotating will help to avoid deception by repairmen. In some services, they always “determine” the most expensive breakdown in terms of repair cost, although in reality the work can cost much less.