1. power problem: check whether the battery of the scale is charged and whether the internal wiring of the scale is worn.
2. Monitor problem: Make a preliminary fine adjustment according to the instructions to see if the monitor is normal.
3. Problems with electronic components: Check whether there are short circuits, open circuits and other problems with electronic components.
If the above methods still can't solve the problem, I suggest you consult the after-sales service or the professionals in the local quality inspection department.