The device turns on, but does not play

[shapanwwuopi]

Switch. Most devices are equipped with mode switches. This mechanism is prone to breakdowns. If the hammer drill has stopped hammering, the reason is most likely in the worn-out fingers of the switch. During operation, they are constantly in contact with rotating parts and this leads to wear.
The retainer's branch that holds it in the gearbox housing has broken, which contributes to spontaneous switching of modes. You don't have to change the retainer if this problem doesn't bother you, the hammer drill will still work.
Method of elimination.

Replace the switch. But if there is no suitable switch and the work cannot be stopped, then you can turn the worn part 180 degrees and continue working.

Cartridge. This part of the mechanism is subject to the brazil telegram data greatest load, which can lead to its failure. If this happened to the cartridge, it should be replaced. The only thing that can extend its service life is preventive maintenance: washing it from dust with gasoline, cleaning it from dirt, etc.
Compressor ring and striker. They can break due to heavy loads. When pressed hard, the stroke of the striker decreases, which leads to a malfunction. If there is a breakdown, there is only one way out - to change it. Gearbox
. If the gearbox is faulty, you need to carefully disassemble it and check all the parts one by one. The most vulnerable part of the gearbox is the bearing. First, check its integrity. Change it if necessary. If it is intact, the reason may be in the seat. It can wear out and not hold the bearing well. In this case, you will have to change the hammer drill body itself. The gearbox gears may become unusable. They are easy to visually identify, but you cannot fix them - you will have to change them.
Oil leak. If there is a leak (it should be noted that this happens extremely rarely), the seal should be replaced. It is located in the neck of the housing.