Microwave oven does not heat food - the list of possible causes

simplest fault

There are cases when the failure is not due to the breakdown of the "internal" microwave ovens, and for reasons such as:

• Low voltage network - smaller than 220 V. Even a small deviation (20 C) can affectof operation of the microwave oven, including the possibility of heating.As a result, a plate can be heated, and the food in the center will be cold.To resolve this issue it is recommended to install an uninterruptible power supply.
• network congestion occurs as a result of two or more high-power electrical appliances from one outlet.In this case, for each customer to bring a separate outlet.
• Broke down the door, or rather its latch.As a result of the incomplete closing weak microwave heats food.The solution - repair or complete replacement latches.
• opportunity to choose the wrong mode.For example, if you set the oven to defrost and then forget to switch back.Feature «defrost» will not be able to heat the food to a high temperature, causing you to think about how to repair and so the whole technique.

If none of these options have not approached, most likely reason is the failure of fuse, capacitor, magnetron or high voltage diode.Next we look at solutions to each problem.

Breakdowns more difficult

Thus, we consider how to identify the problem and, consequently, to repair a microwave oven with his own hands.

Before moving on to self-help, be sure to disconnect the microwave from the network and find the instructions in it.Instructions need to know where all the elements of the scheme, and that you will be checking.

Fuse

first step in removing the cover you need to check the fuses.If they are black or filament burns inside, so only need to replace a new fuse.Usually within two fuses installed.

Please note that when buying a new fuse is best to take out of the house with an old (which burned) to buy exactly the same kind of products.It is not recommended to use so-called "bugs" out of thin wire that can save the situation.In this case, the risk of fire is extremely high, besides the normal value of the fuse does not exceed 50 rubles!

Video guide to find possible causes of the fault:

install and did not help?Consider what else can be done if a microwave oven does not heat food.

capacitor

When you turn on appliances you hear buzzing or background noise inside, possibly broken capacitor.His performance is not difficult to check.This requires an ohmmeter, which is connected to the part itself.

If the needle deviates ohmmeter - capacitor in order - if not out of order, so the microwave and noise during operation.

should be noted that before the test (in fact as well as the replacement of) the condenser it is necessary to fully discharge!

If all of a sudden, when the technology you noticed that inside the chamber something cracking, and at the same time hear the stink of burning, be sure to see it broken in this case:

high voltage diode

Typically, high voltage diode testing is not carried out, citing the complexity of the work.Indeed, much easier to buy a new product, the main front of this to make sure that the problem is there.

Determine the diode fault is possible by means of a high-voltage capacitor (it should not be heated).Two obvious signs - the fuse to blow and hum of the microwave oven when you turn on (if the equipment is buzzing more than usual).

Magnetron

If you have checked all the circuit elements and revealed no problems, the most likely reason that the microwave oven does not heat, is a magnetron.Its purpose - to generate the high-frequency electric field which heats and products in the chamber.

characteristic sign indicating the failure of the magnetron is increased hum when using technology.If the microwave is buzzing, but not warm, you must visually inspect the item for the presence of soot and cracks.If no defects in appearance it does not, check with ohmmeter (body should not prozvanivatsya with feedthrough capacitor).Burnt magnetron must be replaced with a new one with exactly the same dimensions and technical features!

Causes of failure

So, we told you what to do if a microwave oven does not heat food.However, it is more important to answer the question: "Why microwave warming stopped?".The answer is quite simple - most likely, you have incorrectly operated equipment.

main reasons due to which the microwave oven does not heat food are:

• reheating food in a metal bowl (also items here include, for example, a spoon);
• inclusion of technology in idle mode (no food inside);
• wear parts over time;
• warming raw eggs and liquids in closed containers that explode when heated.

should also be noted that cheap Chinese equipment breaks down due to poor quality of assembly, so if you buy a cheap device is doubtful, remember that the "miser pays twice."Finally, we draw your attention to the fact that if the microwave oven on a guarantee, in any case, do not open the cover and do not exercise self-repair.It is better to immediately go to the service center, where the experienced staff will test and repair the unit by the company.

Advised to read:

• How to repair their own hands iron
• Why energy saving lamp blinks
• How to use a multimeter