Reboot, reinstall the mouse in the system did not solve the problem.
Tried on another computer - the same problem.
So most likely there was a pin for the click or a broken switch.
I bought new switches. I took three at once, since the hulls are plastic and can be spoiled with a careless soldering.
Disassemble the mouse. Remove the overlays (had to be thrown away immediately because they can not be pasted correctly).
Unscrew three screws, remove the upper part with the buttons. The button is OK, the pin is also.
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Disconnect the power cord, and the wires going to the LED on the back of the mouse.
Unscrew the LEDs under the scroll wheel. (Black small screw)
Unscrew the three screws fastening the PC board.
Remove the PCB. We need to change red switch to green new one
A little bit about the wheel. What an idiot invented the transfer end in the form of hexagon? Why not a triangle or a square? Hexagon is easier to turn into a circle for hours of hard work. I know why: to break more often and have to buy a new one.
Heat the soldering iron (40-60W). Take rosin and solder.
It is necessary to carefully remove the three contacts at the same time. We invent something.
Take the copper plate, cut out the letter T
Turn the vertical part of the letter T in cylinder diameter="sting" diameter
Put on the soldering iron tip/"sting". Fix the PCB in a vice (do not break it!) Heat and in one motion we evaporate the switch.
(Since I have two hands - there are no photos of the soldering process.)
Take a new switch. Correctly insert the solder into place.
I have a problem. Partially peeling off the place of contact, but there was a path. it's easy to fix.
We bend the foot of the switch in the direction of the track, solder it.
Collect the mouse in the reverse order.