Repair of microwave ovens with their hands: the problem of microwave ovens

In case of breakage of the microwave oven there is a question, to repair a microwave oven with his own hands or buy a new product. In most cases, correct the problem is quite real. To do this, you need to familiarize yourself with the device microwave oven and the principles of its functioning. It is also worth considering the safety rules when working with these devices with their own hands.

Main parts of the furnace

Start repair better with reference to the inner furnace device. Its main functional parts:

• housing;
• the cooking chamber;
• magnetron;
• waveguide;
• Control block.

During disassembly of the furnace will be located in the center of the magnetron. This device is a generator of microwaves, the principle of operation is based on the interaction of the electron flux and the magnetic field. magnetron apparatus includes a cathode, a vacuum chamber and an anode in the form of a copper cylinder.

Burnout magnetron cap

One of the most common problems furnaces - a burn-out of the metal cap of the magnetron. You should first make sure that no violation of the vacuum inside the device. To do this, remove the cap and inspect the tube. If it is not damaged, continue to repair their own hands makes sense. Otherwise, you may need to complete replacement of the magnetron. Given that the cost of this element is comparable to the cost of a new furnace, you need to think about the advisability of purchase.

When the repair requires only replacing the cap, there are several options:

• damaged cap clean of sludge and rotated 180 °;
• purchase (or order in the absence of) appropriate for the particular furnace item in a store of spare parts;
• manufactured part with his own hands from the electrolytic capacitor.

Preferably replace damaged cap new element. However, if you can not buy it may be preferable and the last option. Here the most important thing - as closely as possible to comply with the dimensions.

Production of the cap with your hands

A suitable electrolyte is taken corresponding to the diameter. From this blank is cut to length, the hole drilled in it. To ensure maximum conductivity, in the manufacture of parts with his own hands is recommended to polish the cap, and then treated with a cloth soaked in solvent.

A magnetron in a microwave oven to be positioned against the waveguide. In the case of burnout of the cap element the device needs thorough cleaning from soot and other small particles. Because of its shape it can be difficult to cope with this task. Can help an ordinary vacuum cleaner that will remove all the inclusions with a waveguide port.

Upon completion of the cleaning element it is also necessary to process solvent. From painting the cleaned area with their hands should be careful. Not all kinds of paint are suitable for microwave oven parts. In most cases it is preferable not to carry out experiments and to give up painting.

Breakdown Cover - Causes

Next issue microwave oven - the breakdown of the mica cover. The reason for this may serve as:

• blank microwave switch;
• furnace operation when there is insufficient loading;
• heavily soiled pads.

If the microwave oven is idling, the radiated energy leads to overheating of the cover. In case of insufficient loading increases the voltage generated by the electromagnetic field, that gives rise to breakdowns on the gasket surface. The visible result of these processes becomes charred parts. The damage will increase with time, even if you later switch the microwave is made with a full load.

A third likely cause - greasy stains, spray and other contaminants on the surface of the cover. They absorb the released energy and overheat, which also leads to charring of components and the emergence of the problem.

Methods repair plate

If the damage has not had time to grow, it will be enough to dismantle the unit and clean the charred area. Typically, the plate is mounted on one side on the plastic screws or rivets, and on the other it is inserted in the corners are provided for the slits.

To remove the cover with their hands, enough to remove the fasteners and to put under her knife.

In the case where a deposit has been cleaned off and the through-holes is not affected, the lid can not be replaced. It is treated with solvents and, turning, started again. However, if the item is badly worn, dirty or beginning to be painted as a result of cleaning, repair requires its full replacement. At the same time the old cover must be carefully removed from the oven, so it becomes a template for the manufacture of new parts.

The plate was placed on the mica and align the angle and the two adjacent sides. Dorisovyvayut contour and then cut with a knife with a sharp blade. Scissors use is undesirable, they can deform the mica. Holes operate with a small screwdriver, and the edges of the workpiece treated with sandpaper.

Before you install the new component, must be cleaned of soot inside the furnace wall. It will also use the sandpaper. Do not worry about damaging the enamel. If there is no wall surface fouling sufficiently wiped with a damp cloth. When they are dry, you can insert a mica plate.

Safety measures during repairs

To repair a microwave oven is safe, it is necessary to take into account the following rules:

• can not be included with the appliance door open;
• forbidden to make holes in the furnace body;
• when reinstalling magnetron necessary to remove debris from the waveguide assembly;
• for the discharge chamber in the circuit of the magnetron power supply, use the segment of insulated wire.