DIY repair of vitek scales

In detail: do-it-yourself repair of vitek scales from a real master for the site my.housecope.com.

DIY electronic kitchen scale repair, calibration.

Electronic kitchen scales are becoming an increasingly popular kitchen appliance. In pursuit of a healthy diet and desire to lose weight, it is important for many to know the exact amount of ingredients in a dish. Yes, it's just convenient when you need to accurately observe the ratio of ingredients in a new dish. This little useful device can sometimes fail. Then it is important to know how to quickly fix such a scale yourself. Before taking the scale for repair, check if you can repair it yourself. Or maybe you just need to change the battery or do a calibration.

Possible breakdowns and ways to eliminate them

Battery suitability

Often, if the balance goes out and stops showing numbers, this is due to the power supply of the device. It runs on batteries, therefore, to check the suitability, you must carefully remove the case of the balance. Then remove the batteries and check their operation on another working device for which they are suitable. In 80 cases out of 100, the scales stopped working due to the fact that the batteries simply ran out. Replacing them yourself is as easy as shelling pears.

The balance board and display are connected by a loop in most devices. Sometimes it does not fit tightly to parts, which is why a malfunction is observed. To cope with the problem, you just need to lift the board and press it tightly against the display. It is convenient to do this using a wooden block. Install it between the board and the bottom of the case.

As statistics show, such a problem occurs due to the fact that the contact ends of the scales become thinner. It is important that the contact ends fit snugly against the special feet of the balance. To fix the problem, you need to find a relay of the right size and replace the contacts on it. Then attach the wires to the contacts, and it is best, if possible, to solder.

Video (click to play).

Very often, the kitchen scales stop working due to the fact that food particles and loose substances get inside. The inside of the kitchen electronic clock must be constantly cleaned. If, suddenly, water gets on the balance, you need to quickly wipe it with a clean towel. Also, make sure that the balance indicates the correct weight and that the initial weighing value does not exceed the limit.

How do I calibrate?

Much depends on the specific model, but the general scheme is the same. It is necessary to press the appropriate button (the instructions say which one exactly) and hold it for about thirty seconds so that the inscription CAL appears on the display. Next, the digital mass value should appear, with the help of which the calibration is carried out. As a reference, you can choose any object on which there are indicators of the exact weight. As soon as a few seconds have passed, the word PASS will appear, indicating that the calibration has been successfully completed. It remains only to delete the inscription and turn off the device.

Important! If FAIL appears, then the calibration was unsuccessful and the whole circuit must be repeated again.

These are the main malfunctions that occur with electronic kitchen scales, which housewives most often complain about. Unlike more complex household appliances, problems of this plan can be solved on their own, without even resorting to the help of a husband, son-in-law or father. But, if none of the above methods helps to eliminate the cause, then it is necessary to stop amateur activities and contact specialists.

Before repairing the scales, it is necessary to determine the nature of the malfunction. Electronic scales, like many other devices, fail after prolonged use. Being an uncomplicated device, with a minimum number of uncomplicated elements, weights belong to the group of easily repairable devices. This principle can be found in commercial, kitchen, children's and laboratory devices. However, if they are broken, do not display the weight correctly, or do not work at all, in order to find them to be repaired and restore them to working condition, you need to spend a little time. The repair of this technique differs from the restoration of a mechanical balance.

Displays in modern electronic scales are liquid crystal and, as a rule, are connected to the microcircuit either with the help of an internal loop, or with the help of a special conductive "rubber band". It so happens that it is not tightly adjacent to the board or display. In this case, the image on the display will be distorted or incomplete.

In case of problems with the image, you need to rinse the gum, clean the contacts of the microcircuit with alcohol, reinstall everything and check the reliability of the screws with which the board is attached. In case of unreliable fastening, or a thread break from the screw, it is necessary to better attach the board to the elastic band.

To eliminate a malfunction in the balance, it is necessary to replace the battery in it.

All scales operating on electronics, such as devices from Tefal or Grodno, have a weight limit, which should not be exceeded. If the permissible values are exceeded, as a rule, it is more than 150 kg, the device may deform, the power elements will lose their elasticity. As a result, the device may malfunction.

In addition, the following factors affect the correct operation of the device:

If the permissible load is exceeded, the measurement sensor located on the power frame may break;
The scales will not work in the event of failure of one or several parts of which the structure itself consists;
Often, during operation, the wire leading to the microcircuit breaks.

If, having eliminated these minor misunderstandings, you see that the device still does not work, or shows an error (Err), then you need to take it to the specialists in the service center for more in-depth testing.

All electronic scales operate on the same principle, which means that their main faults are of a similar nature. The scales are designed in such a way that their sensor can go astray at any moment. Then you may notice that they are lying, or the digital electrical panel is just jumping. Why did they go astray, what can be done, and how to fix the situation?

Read also: DIY coat repair

For people who are at least a little familiar with the laws of physics, it will not be difficult to set up an electronic scale on their own. It is enough to carefully follow all troubleshooting procedures.

Adjusting the device is not a complicated procedure, if the scales simply go astray, then it will not require replacement of parts

Self-repair of the scales is also good because in this way you do not need a workshop, and you can save money on calling the master. In addition, in the main, the malfunction turns out to be a trifle, and it will not be too difficult to complete it yourself. It is possible that the battery in your device is simply discharged. Or maybe you need to calibrate.

When it becomes necessary to calibrate the weights, the following should be done:

Press the power button;
Hold it until the word “CAL” appears on the board;
Place an object on the scale, the mass of which you know for sure;
When you see the digital value of the mass, adjust the indicator;
After the message “PASS” appears on the screen, remove the inscription;
Switch the balance off and on again.

Your instrument should now be working properly. If problems persist, look elsewhere for reasons.

Electronic scales work on a different principle than mechanical ones.However, whatever the complexity of the device, the scheme of operation for all electronic devices is the same. It is based on measuring the resistance of a strain gauge. In this regard, the repair of all electronic type scales is carried out according to a similar scheme.

Whatever your home bathroom scale is, the only difference is the electronic filling. All models that determine the biometric parameters of the human body are just a set of resistors with microcircuits. These devices are no different from the primitive Chinese pink flooring devices for teenage girls.

Accurate knowledge of the principle of operation of the floor scale will make it possible to independently carry out minor or major repairs to the device

It is not recommended to undertake repairs of electronic floor scales that are under warranty. Especially if these are expensive and branded products. It is better to take them to a service center, where specialists will conduct high-quality testing, repairs and preventive measures. Those who decide on homemade repairs of electronic floor scales, before disassembling the device, should know their device.

Electronic floor scales usually consist of the following fundamental elements:

Load cell;
Electronic printed circuit board;
Display;
Buttons.

Of all this, you will not be able to repair only the display yourself. If it has turned black or all sorts of terrible patterns have appeared on it, then the crystals are destroyed, and it is no longer possible to save it.

If you are convinced that the reason for the breakdown of your scales is not in the batteries, but somewhere much deeper, and are set to repair the device yourself, then first disassemble the device by removing 2 3-volt batteries, and unscrew the bolts on the bottom cover of the case. Then, conduct a visual analysis of the apparatus. Inside the device you will find 4 legs, a battery compartment, a printed circuit board, wires and a screen with buttons. The front and rear legs have a slight difference in the form of a rubber ring and additional contacts with wires.

At the moment of the first pressing on the scales, the rubber ring of the serviceable devices is flattened, the contact is closed, and the scales are turned on. After that, the system waits for another button to close, which means the person's second leg on the scale.

If your scale stops working due to minor troubles, it will recover and you only need to calibrate

Carefully inspect all parts and assess the quality of the electrical connections, the integrity of the electronic board and the serviceability of all parts. If a malfunction is found, determine the nature of the malfunction and proceed with the repair.

Step-by-step instructions for repairing electronic scales:

All torn wires must be soldered in place;
If the cable that connects the board and the display does not fit tightly, then slightly lift the microcircuit and, more tightly, press it to the display.
Using a small piece of wood, install the retainer on the bottom of the scale body;
Clean the inside of the device from dust and debris;
Align the inner frames if necessary;
If the paths of the microcircuit are damaged, then it is necessary to clean the place of the defect with sandpaper, treat the place of damage with a degreasing agent and plunge it. Solder the jumper on top, after which the damaged area should be varnished;
In old scales, the ends of the contacts may have worn out, check them and replace if necessary;

If all of the above procedures did not help, then the malfunction is hidden deeper.

If the sensor is faulty in the device, then you should find out the degree of its defect. In the case when the element is completely unusable, it just needs to be changed. After that, again, you need to calibrate the device.

Anyone can repair floor scales with their own hands. Well, or almost everyone, since it is not difficult.Basic knowledge of electrical engineering and a little locksmith experience will be enough for this.

Any repair begins with identifying the malfunction that has occurred. Troubleshooting includes:

battery check;
visual inspection;
checking all electrical contacts;
checking the condition of the parts of the scales.

Battery check produced first. If the balance does not turn on or shows unclear numbers, check the power supply status. This is done simply. The battery is taken out and if there is no tester, it is inserted into another electronic device with a similar power supply. If it works, then the reason is different.

When conducting an audit, two factors must be taken into account:

Even if the battery works in another device, this does not mean that it will work on the scale.
Due to improper long-term storage, for example, in high humidity, its contacts may oxidize. In this case, it is enough to simply wipe the battery with a flannel, and it will work again. But the most reliable test is done by a tester.

Examining the appearance scales, you need to pay attention to the changes that have occurred in them. Cracks, charring, deformed parts and other deviations from the original condition are observed indicate the location of the malfunction.

Checking electrical contacts often helps to have the balance repaired right away. If a torn wiring is found, it must be soldered into place. Also do in case of damage to the track on the board.

Checking the condition of the balance parts is done very carefully using precise instruments. Here you will need a caliper, a level and a corner. Attention is drawn to the absence of deformation of the inner frame, the condition of each detail. Close inspection may reveal a hidden defect.

When a malfunction is found, you need to prepare a tool to eliminate it. Mandatory minimum:

pliers;
screwdrivers;
soldering iron;
tester.

You will need a clean rag to remove dust and dirt. If you have to restore the tracks on the board, then you should prepare a sandpaper, solvent and varnish. When all this is prepared and laid out, you can begin to repair the electronic scales.What should I do if different results appear on the display when weighing the same item? There is only one answer - to start repairing.After checking and making sure that the batteries are in good working order, proceed to disassemble the scales and carefully inspect the loop - set of wiresconnecting the electronic board to the display. As a result of the weakening of its contacts, the display is de-energized, the numbers on it are not visible. In this case, it is necessary to increase the density of the loop and its contacts to the electronic board. To do this, the latter needs to be slightly raised and pressed against the display with a block of dense material. It can be carved out of wood or used with a school eraser. This homemade part will act as a board fixer. Contact will be restored, the device will start working. If a broken wire is found in the loop, you just need to solder it at the point of the break.

And it very rarely happens that the sensor itself fails. Such a malfunction is determined by the tester - by the ringing method. If the result is negative, its elimination is carried out by replacing it with a serviceable sensor.

The mass impact on the balance is higher than the permissible one, and will also cause their breakage. This is due to the bending of the inner frames, in the corners of which the load cells are built. Such a breakdown does not occur often. Determine the presence of deformation by level or by taking measurements with a caliper. Repair in this case will be simple - it is necessary align the bent frame... The electrical balance of the strain gauges will be restored, and with it the operability of the device as a whole.

It is not recommended to level the frame without removing it from the balance.

The accuracy of the balance readings is directly dependent on its calibration. If it is violated, the performance will not be impaired, but the measured mass will be show wrong.You can restore the calibration in the following way. A reference weight is installed on the site. It can be any object whose weight is known for sure. Then the power button is pressed and held in this state until the display shows CAL. After a while, the display will show the word PASS. After that, the inscription is removed and the device is turned off. This is the only way to restore the calibration of an electronic scale with your own hands.

Using the material of the article and the videos presented, there should be no questions about how to fix an electronic scale.

Many owners of mechanical scales are also sometimes worried about their repair. It is pertinent to note here that their device is so simple that there is practically nothing to break there! Only metal load-bearing elements... A nuisance can occur when trying to disassemble the case. The four springs tightening the housing flaps are installed in their place and that's it. Repairs completed. The parts that have fallen out in this case are also returned to their original place using tweezers. It also installs the springs. After such a simple repair, the bathroom scale is working again.

When installing dropped parts, it is necessary to squeeze the body, as they are held in place by the force of compression.The simplicity of the device of electronic, and especially mechanical floor scales makes it easy to repair them yourself. The only thing that is required in this process is care and accuracy, since all the parts of the scale are very small and delicate. Timely and correct repair will prolong the operation of the required device.Most bathroom scales are made according to the same principle, so they all have the same breakdowns. To learn how to fix electronic floor scales, you will need to learn several important nuances.The product consists of several elements. As a rule, experts distinguish the following parts of it:

display;

frame;

printed circuit board with various microcircuits;

strain gauges.

Classic bathroom scales with glass body. Possesses display, circuit and 4 sensorsThe body of the product can be made of plastic, glass or metal. Each option has its own advantages. If the case is deformed, it is almost impossible to repair the scales.The most important part of the balance are load cells. They are metal plates that are located on the back of the product.

Open load cell plate. The sensor converts the deformation force into kilogramsThere is a board inside the product that reads the data and displays it on the display. The functionality of the balance depends on the electronic board. 4 sensors are connected to the board. The whole structure is securely protected by a casing. The display on most devices is black and white. It displays all the necessary information well.The device is powered by a battery. A miniature battery (coin cell) is being usedThere is a list of the most common breakdowns. There are the following reasons:

loop failure;

reducing the area of the contact ends;

failure of electronic board elements;

break of contacts;

calibration problems.

The balance may not work due to a dead battery. In this case, you only need to replace the batteries yourself.You need to start diagnosing the device with finding simple problems.The device is made of tempered glass, which rarely breaks down due to the high strength of the caseThe process of operating the bathroom scale includes constant pressure on its surface. After that, the load is evenly distributed over the sensors. Metal strain gauges can fail due to the passage of time. If one of them sends a wrong value, the balance will start to show the wrong weight.If the scales do not work, then repairing the scales with your own hands is a difficult procedure. Most problems require the use of a dedicated tool. You also need to have skills, for example, to cope with replacing and soldering a new contact.To diagnose a breakdown, you will need to check each element of the product. If the scales have completely turned off and will not turn on, you need to disassemble them and check the integrity of all wires. If they show incorrect data, then you need to look for the problem among the strain gauges.It is extremely problematic to independently carry out diagnostic measures. You will need to perform the following algorithm in order to find the problem:

Inspect the balance carefully for deformation.

Remove the protective feet from the load cells. Inspect metal plates.

Disassemble the case. Check all internal components.

In order to disassemble the case, you will need to unscrew all the boltsOn some devices, the bolts may be hidden behind a sticker. Before opening the balance, make sure that all screws have been unscrewed, otherwise the case may be damaged.To restore the device to work, you will need a special tool. It is necessary to prepare in advance:

soldering iron (may be required if there is a wire break);

small screwdrivers.

Spare sensors may also be required. They can be purchased from a specialist store or removed from other products. At home, a person can only fix minor breakdowns. If difficulties arise, they turn to specialists. In every city there are companies and craftsmen who are engaged in repair work.What are medical bathroom scales and how to choose them, read here.For a successful repair, you will need to follow a simple algorithm of actions. If a person wants to know how to repair electronic floor scales, he should familiarize himself with the step-by-step instructions for repairing.If the balance breaks down due to sensors, the first step is to establish the type of problem (sensor curvature, wire breakage, complete breakdown). If the malfunction is associated with a curvature of the structure, it will need to be straightened. Most often one of the load cells fails. In this case, you will need to follow these steps.

Check the performance of the sensors. To do this, you need to put your hands on each of them.Even with a slight pressure on only 1 sensor, the balance should be switched on.

Disassemble the scales, carefully examine the wiring.

If there is a break (near the board or the sensor itself), it will need to be repaired. To do this, you will need to use a soldering iron.

In some cases, the cliff is hidden behind the adhesive base. It is necessary to carefully open it and check the reliability of the connection.

Wires connected to the strain gaugeIf the sensor is completely broken, replace it. It is quite problematic to find and buy a suitable spare part on your own. When looking for a new load cell, you need to pay attention to its compatibility with the device. It is better to buy it in specialized stores. When buying, you must use the help of consultants. The new sensor will need to be fixed in the seat, as well as soldered wires to it.Repair of the loop is usually required when the numbers are not shown completely on the display. A ribbon cable is a set of wires that, inside the device, connect the display and the board. To assess the condition of this element and carry out repairs, perform the following steps:

Complete disassembly of the case. Checking the integrity of the loop.

If the numbers are displayed incompletely, it means that the loop is moving away.

Elements that extend from the board are securely soldered.

Fuzzy display of numbers on the display (example in the picture) may be due to its breakdown or poor-quality wire connectionYou can use a special conductive adhesive to press the ribbon and all pins against the board. After that, the problem should go away. All gluing or soldering work should be done with great care. There is a possibility of damage to the board due to careless actions.In some cases, the malfunction is associated with incorrect sensor settings. Incorrect data on the display can be displayed if for some reason the calibration has not been performed. Modern scales are automatically calibrated every time they are in a new place.Some balances allow manual calibration. To do this, you need to do the following:

The power button is pressed and held until the inscription CAL appears.

A load is placed on the device, the weight of which is precisely known.

Calibration in progress.

After successful actions, PASS appears.

At home, this is the only way to calibrate the scale. If this does not help, then you will need to contact the service center and order a calibration service. Experts have a tool to help you calibrate even the simplest products.Sometimes the scale does not work due to accumulated dust and dirt. In this case, you just need to clean them. It should be noted that cleaning an electronic device is also the prevention of its breakdown. You will need to disassemble the device and use a special brush to get rid of dust on the board and load cells.The internal structure of the scale - all these elements must be thoroughly cleanedCleaning should be done with great care. The main thing is not to rip off the wire or cable. Dust can seriously distort readings if it is found in large quantities near the sensors. For high-quality and safe cleaning, you can use a rag. This material will not harm the board and will not leave any unnecessary elements inside.

The scales have their own service life, after which they fail. Usually this period varies from 3 to 10 years (depends on the brand and model of the device).Load cells break down first. They start sending the wrong data. The operating time is influenced by the operating conditions. If the scale is used on a daily basis (for example, for weighing in a gym), it will fail faster.Standard weighing procedure. Sometimes leads to failure of the deviceIf there is no time for self-diagnostics and repairs, a visit to specialists is an excellent alternative.Many companies repair bathroom scales. They have the necessary tools and spare parts.Before proceeding to diagnose or troubleshoot a problem, a person should carefully study useful articles and read the instructions for the floor scale. In no case should you continue to use the broken product. This can lead to complete failure of the device.If a person's scales break, there are several ways to solve the problem. Sometimes repairs can be more expensive than buying a new device, especially when it comes to budget devices.Read about what you should pay attention to when choosing commercial floor electronic scales in our article. Image - DIY repair of vitek scales

Very often the thought comes to us that it is time to take care of our health and regulate our weight. Especially often this thought worries us in the New Year, after a plentiful feast. And so, you take out the floor scales, and they are faulty, and without them you cannot control the weight in any way. Do not despair, today we will tell you how to fix an electronic floor scale.

An electronic scale is a much more complex device than a similar mechanical device. The readings in the electronic device are displayed, and the principle of operation is based on the functioning of the voltage sensor. The device is turned on automatically (when a person stands on them) or using a special button.

Important! The weighing error ranges from 100 to 1000 g, and the maximum load from 100 to 220 kg, depending on the model. manufacturer and cost.

Electronic floor scales consist of the following elements:

If the electronic floor scale does not work and does not turn on, then dead batteries may be the cause. To make sure that it is the power source, remove the battery and test it on any working electronic device. If the device with this power source also does not function, then replace the batteries and the scales do not need further repair.

Important! Sometimes, a tablet (battery) removed from the balance can work on another electronic device, but this does not mean that it is suitable for the balance. Find a brand new battery or other power source that can supply 3 VDC to the terminals. If the scales start working, then it is not advisable to carry out further repairs.

As for the buttons, they are completely absent in simple models. And, in more expensive models, the buttons are usually touch-sensitive, so most likely the problem is not with the buttons.

Important! The most important thing to remember for the owner of electronic scales is that you must not touch the display! The display is out of our reach. You cannot touch any fasteners on the display, screws, glue that fixes the display - if air penetrates under the sealed glass, the polarization of the crystals will be disturbed, and the screen will turn black in unsightly stains.

The electronic scales are endowed with a fixed platform, and the feet are used for measuring. A sturdy frame is hidden under each leg, made of a special alloy that can deform under the weight of a person. These changes are so small that they are not even noticeable to the human eye, and even such an accurate device as a building level cannot always determine them. Each frame has a tiny plate that is no more than 2 cm across. This is the main sensor assembly of the electronic device.

The most sensitive plate is firmly imprinted into the frame. This plate is poured with glue or compound. Three wires are connected to it, providing measurement of the resistance of the bridge arms. The moment a person steps on the scales, all four frames bend and divide the excess mass among themselves. The readings displayed on the screen are obtained by adding up all the data. The scale printed circuit board is responsible for mathematical calculations. Three wires come to it from each corner of the frame.

The bridge itself is a square with a resistor on each side. Power is supplied to one diagonal of the bridge, and readings are taken from the other.

As you can see, scale sensors are ordinary pieces of iron that are very difficult to damage, because they are not even afraid of moisture (unlike a printed circuit board). The sensors can only be destroyed mechanically, so the reason that the electronic floor scales do not work may still be in them.

Next, we will tell you how to fix an electronic floor scale, if it's not about batteries at all.

If it's not about the batteries and you are determined to fix the electronic floor scales yourself, follow these instructions.

First of all, the device must be disassembled. To do this, remove 2 3-volt batteries to de-energize the device and unscrew the bolts on the bottom cover

Under the cover, you will see 4 legs, a PCB, a battery compartment, a screen with buttons, and wires connecting all these elements. The front and rear legs have a slight difference - a rubber ring and additional contacts with wires. When the scale is pressed for the first time, the rubber ring should be flattened, and the contacts should be closed and, as a result, the scale will turn on. After turning on, the device waits for both buttons to close, this will mean that the person has stood on the scales with two feet.

After carefully examining everything, investigate:

The quality of the electrical connections.
Installation of the electronic board.
Integrity of all details.

After a visual inspection, determine the nature of the problem and proceed with the repair:

Solder any torn wires in place.
If the ribbon cable connecting the board and the display does not fit tightly, then slightly lift the board and, as tightly as possible, press it against the display.
Then take a small piece of wood and place it on the bottom of the case. Thus, the block will act as a retainer.
If the balance stops working due to dust and debris, then clean the device. Do this carefully so as not to damage the contacts and microcircuits.
If the inner frames are bent, then level them using standard measuring tools: building level, angle, vernier caliper. This malfunction can occur if an overweight person stands on the scale and bent the legs.
If the tracks of the electronic board are damaged, then clean the place of the defect with fine sandpaper, degrease and plunge. On top of the damage, solder a jumper or a large layer of tin. Finally, cover the damaged area with varnish (nail varnish is also suitable).
If the balance has been used for a long time, the contact ends of the device have become thinner. Find the relay in which they are worn out and replace the contacts. Make and solder the contacts for reliability.

Important! Usually, all mechanical damage leads to the fact that the readings of the device are incorrect. After you fix all the damage, the scale is fully restored. However, if visual inspection did not reveal any damage, then proceed to the next step - repairing the load cell.

If the balance is visually in order, then use a tester to find the malfunction:

Carefully unsolder each sensor from the board.
Measure the resistance between the three wires.
In all 4 corners, the indicators should be the same, if there is a gap somewhere, then a breakdown is detected.

Troubleshooting instructions:

Carefully pry open the glue (compound) covering the plate. Remember that any mechanical damage to the part can lead to complete failure of the unit.
There will be a copper plate with three wires inside. If one of the wires is torn, restore the electrical connection.

If the sensor is completely defective, then you can find another one with identical parameters so that the scales do not “lie” too much.

Important! Once you find a new sensor, there is a calibration problem, because each sensor is unique, even if two of them came off the same conveyor.Therefore, bridging connections are guaranteed to be in error.

In order not to use special equipment for calibration, there are small tricks that will help correct the situation with a broken sensor:

Simply release it from the load.
Simulate the desired zero load values using conventional resistors.

In the first case, the trick will work if the sensor was previously incorrectly calibrated or lied. And in the second case, the process is simple, because you have already measured the resistance. Simply disconnect the defective sensor, and let it act as a leg (the adders will count the weight of this leg as zero), and connect the remaining sensors according to the diagram and put it inside the case.

Important! The balance may need to be repaired if it has been incorrectly calibrated. To restore it: press the power button and hold until you see the word CAL on the screen. Then the digital weight value will appear. It is with its help that you calibrate. To do this, use any object whose weight you know for sure. Place the item on the scale. After a few minutes, the display will show the word PASS. Remove this inscription and turn off the balance, and then turn on the device again.

Put all the parts in place, insert the batteries into the compartment, tighten the bolts. Carry out a check weigh.

As you can see, it is not so difficult to repair electronic floor scales, because it is just a bunch of resistors and a small electronic board. But if the scales are under warranty, then entrust this business to professionals.

Of course, all things electronic are in vogue now, but well-tuned mechanical scales can also accurately track our weight. And the primitive spring of mechanics can give a hundred points of head start to smart strain gauges.

Under the movable platform there is a body, which includes:

Rocker arm with arrow and dial.
Sensitive spring attached to the horizontal plate.
Horizontal plate.
Four metal arms that are connected in pairs.
Four fixed legs.

The measuring spring is the heart of the weight, because its tension is proportional to the measured weight.

Important! The scale of mechanical scales is divided by kilograms (less often by 500 g).

Most often, the bathroom scales do not work due to exceeding the maximum permissible weight. The design of a mechanical balance is such that only metal bearing parts can be damaged.

Important! The spring and hands with a dial practically do not fail. Shoulders or base may bend.

In the event of a breakdown of parts, the repair of a mechanical balance is as follows: