Impact screwdriver drill, disassembly, installation and repair Solution to the problem of whether it

I will try to explain these issues in this video, how to repair the hammer drill, how to disassemble, how to install, how to troubleshoot. The most common problems encountered in screw drills are generally two: coal running out and the cable breaking from the inside, sometimes working and sometimes not working. I tried to explain it at a very simple level, so those who are familiar with these subjects will not skip important topics if they watch it in a fast-paced manner, not skipping.