DIY gyroscooter wheel repair

In detail: do-it-yourself gyroscooter wheel repair from a real master for the site my.housecope.com.

Video (click to play).

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Video gyro scooter we repair, displacement of the wheel axle, how to repair it yourself, hover scooter with wheels rubs the channel Shilov Dima

It is possible to avoid breakdowns of the gyro scooter only on condition that the vehicle is not used, but stands in the corner of the room. During operation, even a high-quality gyro cycle can fail. When operating vehicles with small diameter wheels, the control system most often fails.

Among the many reasons that cause malfunctions, a significant role is given to the vibration received when driving a gyro scooter on a bad road surface. Small wheels equipped with hard rubber are extremely sensitive to the quality of the road.

Much damage to an autonomous vehicle is caused by vibration. A rare owner of a fashionable novelty can independently eliminate such malfunctions.

Owners of hoverboards equipped with large diameter wheels (10 inches or more) experience virtually no damage from vibration. Tires made from soft rubber greatly reduce its impact.

They are made in two versions - with tires with cameras installed in them and tubeless. Each of the types has its own advantages, but they have a common problem - often the owners of the vehicle during the trip find that the wheel has flattened on the hoverboard.

The condition of our roads is far from ideal, so sometimes it turns out that a wheel on a gyro scooter has punctured by a bent nail in its path, a shard of glass or a dry twig with a sharp end stuck into the rubber. There are other reasons why a gyro scooter has a flat tire, among them:

microcracks formed in the chamber during its long-term use. They can not always be noticed even when testing it in water, since air begins to leave the chamber at a certain pressure. In this case, the camera should be changed, it will not be possible to correct the situation in another way;
a defective or poorly tightened nipple will also cause air leakage. In the first case, the nipple will have to be changed. Purchasing a special protective cap will also help.

In tubeless tires, the main reason for air loss is its puncture, followed by deformation of the rim, in which the tire contacts it unevenly. This also leads to a gradual decrease in air pressure in the tire. During inspection, a malfunction of the nipple may also be found due to its improper installation or a violation of the seal of the gasket.

It is not difficult to repair tires with inner tubes when they are punctured. The first step is to remove the camera to determine if it can be repaired or if you need to buy a new one. Before starting work, you should prepare screwdrivers and "assemblies" with which the cover will be removed.

The work is done in the following order:

the cover covering the outer plane is removed;
the air is completely deflated;
the tire is removed from the rim with the help of "assemblies";
the camera is removed and the possibility of its repair is determined;
if it is in good condition, the puncture site can be sealed with a rubber patch. Better to use a dedicated repair kit;
Before installing the camera in place, thoroughly clean the inner surface of the tire, and sand the puncture site with sandpaper. Wipe the surface of the rim with a clean cloth and sprinkle the inside of the rim with talcum powder.
collect all parts of the tire and install them in place;
pump up the chamber with a pump, controlling the pressure with a pressure gauge. The pressure should not exceed 2.5 atmospheres;
replace the protection of the side surface of the wheel.

A hoverboard is a smart device, and therefore high-tech and complex. And, like any other technique, it can malfunction and fail for one reason or another. Careful operation can significantly extend the life of your mini-segway, but what if you have to deal with a low-quality model? Is it realistic to repair a gyro scooter with your own hands, or is it still better to contact a service center for repair and immediately save yourself from a headache?

We are in a hurry to reassure the fans and owners of “smart horses”: the devices do not have critical breakdowns. Unless, of course, you decided to test your model by dropping it from the tenth floor. Usually, malfunctions are easily eliminated with their own hands, or a failed part is replaced with a new one.

Common causes of malfunctions:

incorrect operation - driving on a bad road on devices that are not intended for this, frequent collisions and falls on a hoverboard, the presence of moisture inside the body;
manufacturing defect;
poor build quality and internal filling, this is the sin of the underground Chinese "craftsmen". It is good if you are the owner, for example, of the original Smart Balance, but you can easily run into "handicraft".

Any repair starts with diagnostics, and gyroboards are no exception. Having dealt with the type of malfunction, consider that half the job is done. Moreover, the sooner you understand what is wrong with the unit, the faster and more efficiently you can repair the hoverboard.

Special sensors can really help in diagnostics - they are the first to detect a malfunction of the device and inform the user by giving a light or sound signal. The most informative is the motion sensor, it can start beeping or blinking.

But what if no outward changes are observed, the sensors do not blink, but the gyro scooter does not function as it should? Dismantling the hoverboard is the only way to understand the root cause of the malfunction.

Prepare the tools before disassembling. You won't need so many: a screwdriver or screwdriver. The second product will be more suitable - a screwdriver will help to remove the screws more accurately and not damage the case.

The main task is to remove the case cover, under which all the insides are hidden, the basis of which is the frame for the gyroscooter. To do this, unscrew all screws and remove the housing half. It is better to put the connecting elements in some kind of container, so you will not lose them.

Carefully disconnect all wires that go to the case, you will find motors, three control boards and a battery. To correctly disassemble the gyro scooter, be careful and take the process responsibly, do not rush and do not pull the wires with all your might. We also repair carefully and carefully.

If you suspect the motherboard, you can try to remove it - to do this, disconnect all cables from it, and then unscrew the bolts that hold the motherboard.

If you need to change the wheel, you will have to unscrew the auxiliary boards, otherwise you will not get access to them.

The popular gyroboard repair forum provides the following information on breakdowns:

Battery problems. The hoverboard spontaneously turns off while driving, quickly loses its charge. The solution may be to replace the battery with a new one.
Electronics. It manifests itself in the absence of signs of activity on the one hand, the gyro scooter may not turn on at all, not keep the calibration. There is only one solution - replacing the boards with parts compatible with your model.You can try to solder the loose contacts, which you will find visually.
Mechanics. The hoverboard does not lock, freely scrolling along the axis, which is fraught with wire breakage. Treatment - replacing the hairpin with a new one. Wheels may also rattle and squeak. In this case, wheel repair may not be necessary - you just need to change the bearing, which could fail due to the ingress of liquid.
The wheel does not work, the camera is punctured. More on these faults below.

There are several malfunctions associated with wheels, and it does not matter what size these components are in your model: 10 inches, 7 or 6. Interruptions in the operation of the wheel are not necessarily related to the breakdown of this particular element. A defective wheel can signal problems with the internal structure of the hoverboard. So, if one wheel does not spin, most likely a breakdown of the board has occurred, which is responsible for the operation of the broken side, or the engine that drives the part may be out of order.

A wheel replacement will be required if the element has been damaged during a jump or collision and cannot be repaired. To remove the wheel, unscrew the four screws on the accessory board and disconnect the ribbon cable and holder from the accessory board using a hex wrench.

When hitting sharp objects, fragments, small stones, you can easily puncture the tire. Replacing the camera is the only correct solution. Moreover, the faster you do this, the better, otherwise you can say goodbye to both the tire and the wheel itself.

The video shows some useful tips for repairing and disassembling a hoverboard:

There are several reasons why one side of the gyro board refuses to work:

a problem with the auxiliary board responsible for the operation of the right or left wheel;

one wheel does not go either due to a key breakdown due to improper handling of equipment;

a defective wheel motor can lead to a situation where one half of the hoverboard does not work. In this case, you will have to disassemble the wheel and replace the defective part with a new one;

failure of one of the electric motors;

imbalance of the system - the wheels begin to move unevenly, or one of them does not function at all.

If one side of the hoverboard does not work due to a breakdown of one of the engines, then it is better to take the device for repair to specialists. It will be safer this way.One more nuance. Before disassembling the hoverboard with your own hands, find the warranty card for the device and check the date when you purchased the unit. Perhaps you fit into the terms of the warranty repair, and you are entitled to repair the smart scooter for free. But if the masters discover that you yourself tried to open the case, then you may well be denied warranty service.Read also about a useful device - a hovercard for a hoverboard.The hoverboard is a sophisticated, intelligent, self-balancing vehicle that is crammed with all kinds of electronics and technology. Very often recently, many people, buying gyro scooters, begin to contact service centers due to a malfunction of this gyro board. Most often this happens due to low-quality products. Since all hoverboards are manufactured in China, and in China there are a bunch of clandestine firms that counterfeit hoverboards from various brands. Let's try to figure out how to fix it, and what does the repair of gyro scooters at home consist of?First of all, you need to understand what is wrong with your hoverboard, and it is best to understand in time. The sooner you realize that your hoverboard is sick, the less you will have to pay for repairs in the future. Of course, if it catches fire, whistles, beeps or vibrates while driving, then everything is clear. Well, if he drives the same way as he did before, and nothing visually happens to him. How to understand then what is with it and not to contact the service center in order to repair the hoverboard?

Repair of mini-segway begins with an inspection

If your hoverboard looks quite healthy and vigorous from the outside, then we will have to disassemble it. To do this, you need a screwdriver or screwdriver. It is better to use a screwdriver, so you will not rip the threads during assembly and do not scratch the body of the hoverboard. And put the screws somewhere in one place, otherwise you will definitely lose two or three at the end.

Turn your hoverboard over on your back and place it on the table or floor. After that, you will have to unscrew the bolts that hold the hoverboard covers. Later, carefully remove the covers. You will see wires or cables that run from the hoverboard to the covers. On one side, there will be only one loop from the backlight. Find the place where it is attached to the hoverboard and detach it.

There will be three more stubs on the second cover. One for inclusion has 4 contacts or 4 holes. The second is for recharging and a loop from the backlight, all the rest go to two contacts. The device of a gyro scooter is not as complicated as it seems. There are two auxiliary boards on which there are two gyroscopic sensors, a motherboard with a processor and a battery. All insides and circuits are replaceable and in which case you can easily change something that is broken. You see, the repair of gyro scooters is not as difficult as it seemed at first.

It happens that when driving on uneven surfaces and with a lot of vibration, the internal trains begin to gradually weaken or twist. Then you will have to remove the cover, check and fix all the wires. See if each wire is securely connected to your hoverboard. This problem is usually clearly visible at first glance.

The next common problem is usually when braking suddenly or jumping from a great height. This could break the wheel. Then you will hear the sound of the wheel or internal mechanisms hitting. You will not confuse it with anything, the sound will resemble frequent rumbles. Then you have to change the wheel. To do this, you will have to unscrew, the auxiliary board is attached with 4 bolts. After that, disconnect the cable going to this board. Next, you should see a holder with four screws, they just hold the wheel. To unscrew them, you need a hexagon.

What the gyro scooter consists of

Another problem is when either the gyro sensor or the board itself breaks down. Then the ride becomes uneven, he begins to turn at the wrong moment or tilt. Then you need to contact the company from which you bought the hoverboard or factory, and then they will tell you what to do. Usually they ask to send a video, according to which they determine which board needs to be replaced. If they haven’t specified, they will send a complete replacement kit which includes two accessory boards and one motherboard.

Installing it is not difficult, you have to remove the auxiliary boards and the motherboard and install new ones.

There is another problem that is often encountered and solved without disassembling your gyroboard. It usually occurs when you stand on the hoverboard and keep the balance in a level position, your vehicle begins to go, either forward or backward. This is due to the imbalance of the two sides and their sensors. That is, the two sides are not in the same position to each other.

High quality battery for hoverboard

To solve this problem, you need to hold down the power button for 5-6 seconds. After that, the hoverboard will start flashing continuously. This means that he has turned on the balance adjustment mode. then you need to place your hoverboard as evenly as possible, so that neither side is turned. Then press the power button again for 1 second and wring it out. Your hoverboard is all balanced and ready to ride.

It may happen that your hoverboard beeps and does not go anywhere, and in addition, a red circle is on. When moving in any direction, it begins to squeak. This is firmware related, you need to update it and reflash your hoverboard.

Hoverboard motherboard

If your hoverboard turns off while riding, it may be due to the battery in your hoverboard. The first thing that can be, is with the board on which the battery is located. Second, the battery is Chinese and of poor quality. Well, or your low-class battery type 1C - 2C. Such batteries will be disconnected in the event of a sudden stop or when driving over a curb or obstacle.

If your mount is broken or the case is broken, then you will have to order or buy a new one. If the hoverboard is under warranty, you will have to contact the manufacturer. But you will have to change or replace it yourself. You can of course contact the service centers, but the repair of gyro scooters there will cost more.

The tire is one of the most common elements that breaks down during the operation of the gyroscooter. This is due to poor quality rubber, improper use or puncture of the product. If we are talking about mechanical damage - usually along with the tire, the cameras also fail, so you will have to buy a kit right away. The replacement itself is not difficult, but in order to do everything efficiently, experience and equipment are required. We often buy cameras and tires for self-installation, but then tormented, people turn to the workshop for help. Therefore, if you do not have a lot of free time and a desire to figure it out, we advise you to contact our service center.

We have a full range of tires of all types. Available in sizes:

The wizard will help you choose the option that suits the size, guide you according to the existing markings. You can pick up the product by free self-pickup from the workshop (next to the Kotelniki metro station), or order a courier delivery. If necessary, you can replace the tire directly in our workshop. The whole operation will take 15 to 40 minutes.

Approximate time

repair, min

The indicated cost and time of work are indicated for informational purposes only. The final price of the repair is calculated individually, depending on the complexity of the work, the availability of spare parts and other factors. You can send a photo of the breakdown to us on WhatsApp and the wizard will try to calculate the cost of the repair remotely.

Note that it is important to correctly diagnose a breakdown, there are such situations:

1. If the wheels are of small diameter (6.5 - 8 inches), the control system often ceases to function normally. The reason is vibration received when moving on a bad road surface. Small wheels with hard rubber do not run for long on uneven roads.

2. Hoverboards with large wheels (10-12 ") - Hoverboard holders with wheels with a diameter of 10" and over rarely repair damage due to vibration. Soft rubber tires reduce its impact. Also, on many models, large tubeless options are installed, which very rarely fail.

In addition, the reasons due to which the air comes out of the wheel are:

microcracks that appeared in the chamber during long-term operation. The camera needs to be changed;
broken (need replacement) or loose nipple. You can buy a cap for protection.

All of the above points exclude tire repair. If the problem is still in it, it is worth fixing it as soon as possible.Riding on flat tires causes the rim to deform, resulting in even more costly ipad repairs.

When punctured, you need to remove the camera in order to determine whether you need to replace the tire with a new one or vulcanize it. The whole process is carried out in several stages:

the cover covering the outer plane is removed;
air is removed;
the tire is removed from the rim;
the camera is taken out, the possibility of repairs is revealed;
the puncture site is glued with a rubber patch;
the inner surface of the tire is cleaned, the puncture area is cleaned with sandpaper;
the surface of the rim is wiped, inside it is sprinkled with talcum powder;
parts are assembled;
the chamber is pumped up with a pump (maximum pressure - 2 and a half atmospheres);
the protection of the side surface of the wheel is installed.

There are adhesive cords for repairing tubeless tires. If, during the passage of air between the rubber and the rim, the rim fails, a complete wheel replacement is required.

Boards with gyro sensors should be turned over and secured with electrical tape, otherwise the system will fall out into error E9. With this error it is possible to check the operation of the gyroscope sensors, just turn the gyroscope sensor board upside down and if the LED on the motherboard gives the code E9, then the sensor is working. Then check the second board as well.

To test the gyro sensors, turn the board over

As usual, it all starts with nutrition. A charged battery should deliver 40 volts under light load. An ordinary 220 volt 60 watt incandescent lamp is suitable as a load.

There are three power regulators on the main board. A 12-volt pulse regulator is assembled on the Q3 element. Further along the circuit there are linear stabilizers U1 - 5 volts on the 78M05 element and U2 - 3.3 volts on the CJT1117B element.

The gyro boards are powered by 12 volts and have their own stabilization elements for 5 and 3.3 volts. Stabilization is performed on the same elements as in the main board 78M05 and AMS1117. On the reverse side of the boards there are optical sensors of the control pedals. One of the boards contains a module for receiving commands from the radio remote control. Otherwise, both boards are identical.

We figured out the food. Now let's dive into the work of the main board. The motherboard contains two three-phase current generators with a monitoring and protection system. All this economy is controlled by the U3 central processor. On the Q1 element, an electronic power switch is assembled, which supplies voltage to the motherboard when the device's start button is pressed. The role of switches in the motor winding circuit is played by field switches. The control of the keys is taken from two phases of each motor. The control circuits themselves are made on the elements U4, U6. This is a dual op amp labeled CD06.

The signals from these amplifiers go to the legs of the U3 control processor. If there is something wrong with the power section, the processor will see the problem through this circuit. When replacing the CD06 amplifiers with analogs, it may be necessary to adjust the amplifier feedback loop.

The control of the current consumed by the motors is performed on the elements U5, Q2L, Q2R, RONL, RONR.

Current resistors RON are located on both sides of the board; they act as a shunt on the negative power bus. Microvolts of voltage drop from current resistors are amplified by amplifier U5 (CD06) and fed to processor U3. Thus, the processor monitors the work of the system according to the load.Also on the elements Q2L, Q2R (BFS20), threshold current protection is performed, when activated, the electronics will fall out into an error. When the threshold is exceeded, the transistors close and pull the control legs of the processor through the resistors R51L, R51R to the power supply minus. At the same time, the processor turns off the generators to prevent the failure of the battery, motors and power switches. The right and left halves of the motherboard are identical and have the same parameters, which makes troubleshooting easier.

The hoverboard motor contains three power windings and three hall sensors. The hall sensors are alternately switched when the wheel is rotated, which can be monitored by a logic analyzer or a conventional probe.

The power button of the device performs the function of resetting to factory settings while calibrating the gyroscope sensors in space. In the process of dumping, the platform of the hoverboard must be in the horizontal plane. With the device turned off, hold down the power button and wait for a long beep. Then release the button and wait 10-20 seconds. Turn off the hoverboard.

The next turning on of the hoverboard will be with a new calibration.

The gyro scooter has its own diagnostic system and in case of malfunctions it signals with a LED on the motherboard in decimal code format.

If the hoverboard is deployed so that the battery is on the left as in the photo, then the codes are as follows:

E1- Malfunction of control and monitoring circuits left side of the board "L" (control, the motor near the motherboard).
E2 Malfunction of control and monitoring circuits right side of the board "R" (control, by the motor near the supply battery)
E3 Problems with the power section of the motor control or their circuit.
E4 Right hall sensors
E5 Left hall sensors
E6 Malfunction of battery or power circuit on main board.
E7 Malfunction of the left gyroscope module
E8 Malfunction of the right gyroscope module
E9 The angle of inclination of the hoverboard is greater than 80 degrees

Fault detection by the hoverboard self-diagnosis system is divided into two stages. The first is a power-on test. The second is going out of range during device operation. For example: Leakage in transistors Q2L, Q2R at power-on will give us the codes E1, E2, respectively. If the same elements give a signal during the operation of the hoverboard, then we will see the code E3.

For a detailed clarification of the situation, we run the board with a voltmeter.

We measure the voltage on the control circuits relative to the minus of the battery.

The outputs of the U5 microcircuit are legs 1 and 7, the voltage is 1.8 volts.

Outputs of microcircuits U4, U6 legs 1 and 7 voltage 1.6 volts.

On the collectors of transistors Q2L, Q2R voltage is 3.3 volts.

If the voltages differ from those indicated, then check the strapping of the protection elements and the voltages coming to them.

Video (click to play).

On other models of gyro scooters, the control circuits and diagnostic codes may not coincide with the data given above, but the principles of operation are the same.