If the mouse wheel does not work

The developers of modern operating systems are doing everything possible to simplify the interaction of the software GUI and the user. Although currently the unspoken legislator of standards in this area, Microsoft, has relied on touchscreen touchscreen technology, as seen in the new version of the system, it's quite difficult to work with programs without windows. If the mouse wheel does not work, then many users start to panic. Being an electronic device, the mouse can indeed fail, but before going to the store for a replacement, it's not superfluous to try to more thoroughly test its performance.

The mouse-type manipulator has undergone a number of changes since its inception, which primarily concerned the principle of reading displacement data: a heavy ball covered with a layer of rubber and rollers constantly clogged with debris were replaced by an optical system. But the wheel and buttons have undergone less drastic changes: from the inside of the disc at a certain distance from each other are holes. On one side of the disk there is a light-recording sensor, and on the other - an infrared diode, a classical optocoupler. When the user rotates the mouse wheel, the diode light periodically interrupts. Such a system allows electronic circuits to calculate the pulses and determine the direction of rotation and speed.

If the mouse wheel does not work - this, as indicated, is not a reason to exchange. First you need to check which programs are experiencing a crash, try to replace them. Sometimes the problem lies in the wrong settings of the programs.

The next step is to make adjustments to the Windows settings. Press the "Start" button, open "Control Panel" and go to the "Mouse" tab. Here you can make changes to the wheel.

If everything is so simple, then why forums are full of questions like "the mouse wheel does not work"? The answer is simple: much more often the problem lies in the hardware part. Sometimes the mouse does not work the wheel due to a failure in the optocoupler pair. Fortunately, some types of repair can be performed independently at home.

We disconnect the mouse from the computer, take a screwdriver from the hour set and unscrew the two screws (usually) from the bottom of the mouse. The screws can be hidden under the labels, so we carefully probe the hidden surface. Then gently open the case.

Optocoupler pair is easy to find - it is next to the wheel. A piece of dry cotton wool remove all dirt from the window-holes on the wheel drive, as well as carefully wipe the LED and sensor. Often there you can see whole skeins of hair blocking a ray of light. In rare cases, it is necessary to align the level of the diode and the sensor (if they are twisted, it is immediately noticeable).

Sometimes the situation when the mouse wheel does not work is connected with its rubber coating. Over time, the rubber becomes slightly larger in diameter and does not fit too tightly on the plastic base of the wheel. Trying to rotate the wheel, the user, in fact, rotates only the rubber ring, and the internal mechanism remains at rest. What is interesting: this malfunction without disassembling the case can not always be determined. She is well acquainted with the owners of A4Tech products, seeking an answer to the question of why the x7 mouse wheel does not work . It is solved quite simply: the seat of the base disk and the inner side of the rubber ring are carefully wiped off from fat and dust with a cotton wool and alcohol. Then the ring is fixed in the simplest and most effective way - superglue. It is enough two or three points along the perimeter.

If this did not help, then, alas, direct road to you in the workshop or in the store for a new mouse. At any decision it is necessary to remember that it is not necessary to ignore installation of the driver on the device.