DIY Philips blender gearbox repair

In detail: do-it-yourself Philips blender gearbox repair from a real master for the site my.housecope.com.

Various food processors are used to prepare various first courses, as well as special foods for children. But due to frequent use, they break down quickly. Repair of the blender Brown (Braun), Turbo (Turbo), Philips (Philips), Bosch (Bosch MSM) and others is not difficult, all work is easily done by hand.

This device is very simple in structure. Basically, a blender consists of an electric motor, a nozzle and a bowl (only for a stationary one). Devices are of two types:

  1. Manual, submersible (Bimatek BL, Kenwood, Krups, Orion);
  2. Stationary (Moulinex, Panasonic, Gorenje, Zelmer).

The manual ones are a motor with a handle to which a nozzle is attached. The key difference between the hand blender and the stationary hand blender is how it works. Food is poured into the stationary bowl, which is crushed by the knives located at its bottom. The manual one is immersed in a container (most often in a special glass) and cuts food at any level.

Image - DIY Phillips blender gearbox repair

Photo - hand blender

The main types of equipment malfunctions:

  1. The device does not rotate. This is a knives speed switch problem;
  2. The household appliance does not grind or does not work well. With a mixer and blender, the power of work plays a very important role. If an insufficiently powerful or high-quality type is selected, then the work efficiency will be low;
  3. The device does not turn on. Perhaps there is something stuck inside the shredder or the engine burned out from very intense work. Also, in some cases, this is affected by a decrease in voltage in the electrical network;
  4. Modes do not switch. This is most likely a drive or control problem;
  5. The knife broke. Most common problem. These blender parts are sold in almost any brand store (Vitek, Redmond RHB, Scarlett - Scarlet, etc.), they cannot be repaired, so they are replaced.
Video (click to play).

Image - DIY Phillips blender gearbox repair

Photo - stationary blender

Video: how to fix a blender

Before you repair the device, you need to disassemble it. It should be noted right away that the disassembly of the Brown, Saturn, Bork and Vitek hand blender is impossible. Their construction is molded plastic. A plastic ring is soldered into the base, which cannot be removed. Therefore, there are only 2 options for solving the problem if the device is broken:

  1. Buy a new one immediately. Unfortunately, not every service center will provide warranty repairs for such blenders;
  2. Unsolder the panel. To connect the body, plastic soldering technology is used, therefore, disassembly can be carried out using high-temperature technologies. You need to carefully cut the case and insert several metal plates or needles into the cut. They need to be heated and the molten plastic removed. After repair, the plastic can be glued.

The body contains the working part of the blender - the motor, the spindle, the control unit (a circuit that helps to adjust the modes, etc.). After disassembly, you can replace the required part with a working one or clean the device contacts.

A little more complicated is the case with disassembling a stationary blender. It consists of a specially shaped bowl (often cylindrical or trapezoidal), a knife, an electric motor, a shaft and a spindle. When the device is connected to the network, the shaft with the spindle transmits the torque to the knife, which moves and cuts the food in the bowl. To prevent the ground food from falling out through the extended top, the bowl is closed with a lid.The rotation of the knife can be carried out for a certain number of times (some models of the company Moulinex, Polaris and Redmond have a built-in timer in the system) or until the contacts open.

Image - DIY Phillips blender gearbox repair

Photo - disassembly of the hospital

To disassemble such a blender at home, you will need a screwdriver or wrench, depending on the type of mounts. The housing cover is supported by screws or nuts, mainly with a left-hand thread. They are removed, the body is removed. Under it is the motor, shaft and spindle. The first step is to inspect the shaft; there should be no jags or obvious irregularities on it. Further, if necessary, you can change the knife:

  1. If the knife is dull, then it will not work to sharpen it - but you can buy it in the company store. Depending on the brand, it costs from 2 dollars to 10. To remove the old cutter, you need to unscrew it from the spindle;
  2. Sometimes the knife is mounted not on the thread, but on the nuts. Then they are unscrewed, and the blade itself is carefully removed from the socket;
  3. An oil seal is located at the junction of the knife and the drive - this is a seal that improves the adhesion of the parts and increases the torque. It must be replaced every six months (if the model is collapsible);
  4. In some blenders Tefal (Tefal), Bork, Scarlet SL-1548 and Cameron, the knife and container are solid, so if any part breaks, you will need to replace both parts.

If the knife is turning too slowly, the speed selector may not be working. The control board is responsible for its work. To inspect it, you need to disassemble the device according to the instructions above and test all the contacts. They should be closed. In this case, be sure to check the power and lock button.

Image - DIY Phillips blender gearbox repair

Photo - knives

It should be noted that the operation of the drive is impossible without a tight fit of the bowl to the junction. This safety technique protects you from accidental injury. If the board and the lock button are normal, then you need to test the contacts of the bowl - they may come off. Sometimes, when doing kitchen work, food residues get on the active parts of the device - look at them and, if necessary, wipe them with special substances for cleaning and degreasing.

Image - DIY Phillips blender gearbox repair

Photo - hand model construction

In the event of a gearbox malfunction, the blender most often simply does not turn on; such repairs are very difficult to carry out on your own. Instructions on how to replace the engine:

  1. It is necessary to disassemble the device according to the scheme described above. Be sure to read the manufacturer's recommendations and the technical specifications of the device. In non-separable models, such repair is not advisable due to its high cost;
  2. Check the power and lock button - there may be a problem with it. If a buzzing sound is heard when the blender is turned on, then you need to squeeze the contacts and test them with a multimeter. In some cases, they simply cannot close when turned on;
  3. Engines can be bought separately in special stores, but such spare parts are sold separately only for expensive models or for food processors (Kenwood HBM, Polaris PHB, Gastrorag, DEX DHB);
  4. The new engine is installed in place of the broken one, the system is assembled and tested.
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Often the reason for the non-working condition of the blender is a broken power cord. To check it, you need to disconnect the device from the network and ring the wire. The cable is soldered to the power head inside the case, you need to check its voltage with a multimeter when connected to the network - if there is a signal, then the cord is working. Otherwise, the cable is replaced. The same can be done with a fuse - it is tested and, if necessary, replaced with a new one.

The device of a hand (submersible) blender is no more complicated than some toy with a motor, with which every boy had fun in his childhood, and probably dismantled it. So difficulties with how to disassemble such a simple device as a blender, it would seem, should not arise, even if it is the popular Philips.

But the problem is that many "serious" manufacturers of home appliances do not want you to poke around in their creations on your own and try to fix something there. They deliberately try to make it difficult to access the internal parts of their products. And some even go so far as to make it indestructible - such devices cannot be disassembled without breaking something in the process.

In order to disassemble and diagnose almost any hand blender, we need a "standard gentleman's set" of the master:

  • Flat and Phillips screwdrivers.
  • Penknife or office knife.
  • Electrical tester.

Image - DIY Phillips blender gearbox repair

Consider disassembly using the example of a fairly common model of a hand blender Philips HR 1372, which is protected by the manufacturer from disassembly and repair at home (common causes of breakdown are described in the article: why the blender may not work). Philips hand blenders of this type can be disassembled from the side of the attachment attachment. In this part of the body are located two plastic latches, rigidly connected to the round "ears" of the removable part.

It is impossible to pry them off with your fingers, so we use two small screwdrivers and a penknife with a thin blade for this. Using one screwdriver, you need to lift the edge of the latch, and with the other, slightly move the "eyelet" towards the release. We will do the same on the other side, after which it will be possible to easily remove the front black plug from the attachment side of the nozzle.

Under it we will see another white plastic cap, which is no longer attached with latches, but with glue! To get it, we will have to use a penknife, or better a clerical knife with a very thin blade, which needs to cut off the glue, passing the blade along the edges of the plug adjacent to the body.

After removing this plug, we will see an electric motor with a spindle. But we will not be able to get it right away, since something else is holding it from behind. At the back of the Philips Hand Blender is a metal decorative cap that only holds onto double-sided tape. It can be easily pry off with a small screwdriver and removed. Under the cover we will see two custom screws at the power wires that hold the motor and prevent it from being pulled out from the other side.

These screws have unusual caps with two notches along the edges for a special wrench. Neither a regular nor a Phillips screwdriver fits them, but with some skill they can still be unscrewed with an ordinary screwdriver or scissors, if they are not very tightly twisted. Having unscrewed the rear screws, we can easily get the electric motor along with the control circuit from the body of our Philips hand blender and see what this design is.

Image - DIY Phillips blender gearbox repair

The insides of the blender are: electric motor and control circuit with buttons, which is fixed on a round plastic frame. In order to diagnose and repair them, you need to disconnect all wires and free the electrical circuit from the plastic frame. After that, using a tester, you can check the serviceability of the electric motor and the elements of the electrical control circuit.

Defective electrical elements on the diagram can almost always be replaced with similar in characteristics, and the circuit itself can be cleaned of contamination, which can also cause malfunction or interruptions in the operation of the hand blender.

If an electric motor burns out, it can only be sent to a landfill, since it is almost impossible to fix it at home. The electric motor can also be replaced, but only as a whole and for exactly the same size and electrical characteristics.

If, on the contrary, the motor is in good working order, and the control circuit could not be repaired, then it can be left for "spare parts" to be used elsewhere.