Owners of Xiaomi smart gadgets often face the mysterious situation when smart scales, when turned on instead of zero value or weighing process, instantly display the number 1.75. This strangeness is puzzling, since the device seemingly has not yet taken measurements. In fact, this is not a breakdown of the electronics, but a specific mode of operation or calibration failure that is easy to fix.
The number 1.75 in this context is most often interpreted by users as weight, but for the Mi Body Composition Scale algorithms, it can be a signal that a primary calibration is needed or an indication of a pairing mode. It is important to understand that modern analytical scales are complex computers that require certain conditions to start, and if you see this value right away, then the device has gone into a standby state or has given a residual result of the last failed measurement.
In most cases, the problem is solved by simply restarting or by the correct order of on, but if you ignore this signal, the measurement error may persist, and the data in the Mi Fit or Zepp Life application will be incorrect. Below we will discuss in detail the mechanics of this error and describe Step-by-step how to fix it.
Reasons for the appearance of the value of 1.75 on the display
The first thing to do is to understand the origin of the number 1.75. There are several scenarios in Xiaomi and Yunmai's product lineup that lead to this display, most often it has to do with how the strain gauges respond to the initial pressure, and if the scales are on an uneven surface or carpet, they can count the 1.75kg micro-strain of the platform and record it as a starting value.
Another common cause is battery discharge. When voltage falls below a certain threshold, the controller may behave unstable, giving out chaotic values at start. It is also worth considering that some scale models have a "quick weigh" function that does not reset the previous value until full zero is fixed. If you quickly stood up and walked off, the scales could "remember" the transition state.
⚠️ Warning: Do not attempt to disassemble the body of the scales if the warranty is still valid. Mechanical intervention often damages sensitive strain gauges, after which the device will have to be thrown away.
It's also important to check if the buttons or touch zones are stuck. On some Mi Scale 2 models, activation is by touching certain areas. If these areas have accumulated moisture or dust, the scales may think that the process of entering data or calibrating is in progress, displaying a fixed value.
Inspection of operating conditions and surfaces
The accuracy of the electronic scales depends on the surface on which they are installed. Xiaomi's algorithm requires a completely solid and flat base. If you put the device on a carpet, soft-backed linoleum or a wooden floor with a deflection, the measurement error is guaranteed. 1.75 can be the result of one of the four legs of the scales being above or below the others, creating a skew.
It is recommended to move the scales to the tile, concrete floor or dense laminate. After moving, you should allow the device to "lie" without load for 5-10 minutes, this will allow the strain gauges to return to the original zero position and relieve the residual voltage. Often after this procedure, the scales are self-calibrated and begin to show zero.
Also, you should pay attention to the ambient temperature. If the scales have just been brought in from the cold (for example, from the balcony or from an unheated hallway), condensation or temperature drop can cause a temporary failure in the readings, in which case the device must be kept at room temperature for about an hour.
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Put the scales on the smoothest place in the room, preferably closer to the center of the tiles, avoiding seams and joints of floor coverings.
Resetting and calibration of the device
If the reshuffle didn't work, you have to do a forced calibration. Unlike a mechanical scale, there's no wheel, so it's software-based. Most Xiaomi and Yunmai models have a standard reset algorithm. First, you have to take out the batteries and leave the scales without power for 1-2 minutes, and that will completely de-energize the controller and clear the RAM.
When you install the new batteries, don't put the scales on right away. Wait for the 0.00 or 0.05 (permissible error) to appear on the screen. If 1.75 lights up again immediately after you turn on, try this method: insert the batteries, wait for the screen to turn on, and in the same millisecond when the numbers come up, stand abruptly on the platform with both feet. This sometimes helps intercept the initialization process.
In some cases, you need to "train" the scales. Stand on them, wait for the weight to be fixed, step off, and stand again. Repeat the procedure 3-5 times. The internal processor Mi Body Composition Scale will analyze the range of values and average them, which often eliminates the "stick" on one digit.
☑️ The algorithm for a complete reboot
Work with Mi Fit and Zepp Life
Xiaomi’s smart scales are closely linked to the app ecosystem. The 1.75 display error can be synchronized with the user profile. Go to the Zepp Life app (formerly Mi Fit) and check your profile settings. If it lists an incorrect height or age, body composition algorithms may produce incorrect intermediate values that are displayed on the scale screen.
Try untie the scales from your phone. In the Bluetooth menu on your smartphone, find a device (usually Mi Scale 2 or XMTZC...) and click "Forget the device." Then in the app itself, remove the scales from the list of devices. Then repeat the pairing process again, which will reset the software conflicts that may have arisen after updating the firmware of the scales or the application itself.
Sometimes the problem is the cache of the app. Clearing the data of the Zepp Life application can help, but remember that this will require re-authorization. Make sure that the application has all the necessary permissions, including access to geolocation and Bluetooth, as without them, correct transfer of calibration data is impossible.
Hidden Bluetooth settings
Diagnostics of hardware faults
When software methods are exhausted, it's worth considering the likelihood of a physical breakdown. 1.75 can indicate a failure of one of four strain gauges. If one sensor is "dead" or shows constant resistance, the scales can't go to zero and give an error or a fixed value.
Also, notice the legs of the scales. They have to rotate freely and go down to the end. If one leg is stuck or lost, the scales will be skewed. The Mi Scale often comes with spare rubber linings, but the metal screws-legs themselves are difficult to lose, although this happens when you fall.
Contact oxidation is another common cause: If the scales were in the bathroom, the humidity could have done its job. Remove the battery lid, wipe the contacts with alcohol or a special cleaner. If you can carefully remove the top glass panel (which is very difficult without damage), you can check the plumes going to the board, but this action voids the warranty.
| Symptoms. | Probable cause | Method of decision |
|---|---|---|
| Shows 1.75 right away. | Uneven surface | Move to tile/concrete |
| Numbers float | The battery's dead. | Replace with new ones (Alkaline) |
| Not included | Oxidation of contacts | Clean contacts with alcohol |
| Error Lb or Err | Overload or breakdown | Battery reset, sensor checks |
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If after replacing the batteries and installing on a perfectly flat floor error 1.75 persists, most likely, one of the strain gauges has failed.
Prevention and proper care
To keep smart scales long and do not require frequent calibration, it is important to follow the rules of operation. Do not store them in places with high humidity or sharp temperature changes. Although many models have spray protection, direct contact with water or steam is harmful to electronics.
If you don’t plan to use the scales for a long time (for example, going on vacation), it is better to remove the batteries.This will prevent the possible leakage of the electrolyte and oxidation of the contacts, which is one of the main reasons for the failure of Xiaomi’s portable electronics.
Check firmware updates in the app regularly. Xiaomi engineers periodically release patches that improve strain gauge algorithms and fix data display bugs. The current version of the software is the key to the correct operation of all functions of the device.
⚠️ Warning: Do not use scales if the glass is cracked.Even a microscopic crack disrupts the load distribution on the strain gauges, making measurements meaningless and dangerous to the feet.