Common causes of failure
If, for some reason, the drill ceases to function, it is necessary to understand the reason. The first step is to check if there is voltage in the extension cord and the outlet. It can be done with a single-pole indicator, it will show only the phase, but if the breakage occurred on the zero wire, it will be useless. The easiest way is to switch on another appliance in the same extension and the same outlet and thus check their operating status.
Note! The check of all electrical devices must be carried out according to the scheme.
Check the button of the drill is best with an ohmmeter or tester according to its scheme. We connect the device to the contacts on the plug, the device does not react at all, because the start button is not in the working position. After you press it, the device will show or a beep will alert you if the whole circuit is damaged or damaged. If the reason is in the button, then consider the device of the button of the drill and its repair.
Wiring diagram of the drill button and checking its operability
To check the button, the tester is not always enough. This is due to the fact that most buttons have a smooth speed control, so a simple tester does not check them correctly. For a proper check, you will have to use a special scheme. Often in a drill, one wire is attached to one terminal. Therefore, with the simultaneous pressing of the button, all the terminals are called up. If the light comes on, the button is OK, but if not, then the easiest way to fix the problem is to replace it.
Important! In order for the engine to work with the reverse, it is necessary to interchange the connection of the wires to the brushes.
When making a replacement, it is necessary to take into account that the scheme is ordinary and with a reverse. In this connection, the replacement of the button of the drill must be carried out strictly according to the scheme. It is necessary to pay attention to the fact that it must fit the dimensions, which goes without saying, and also correspond to the power of the drill. Calculating the required power is simple enough: for example, the power of the instrument is 650 W, we use the formula P = U * I and get I = 650/220 = 2.94 A. So, we need a button at 2.95 A for our drill.
Repair of the switch
Repair of the button of the drill is a rather complicated process, it requires certain skills. It is necessary to understand that when opening the case, many details just drop out of it. To avoid this, gently lift the lid and mark the location of all parts. The button is disassembled and repaired in the following order:
- The clamps of the protective casing are hooked and it is pulled together;
- All blackened terminals are cleaned of carbon with alcohol or nazhdachki with fine grain;
- Then everything is collected again, and if the work is not restored, then a replacement takes place;
- The speed controller is completely filled with a compound, so if it fails, it must only be changed;
- Another common failure is the erasing of the working layer under the rheostat slider. Repair it does not make sense, so it's easier to replace the entire button.
In order to know how to connect the drill button, it is necessary to work according to the scheme, which should be available for the tool. If you do not have one, you need to find it on the Internet. Only with its help you can perform repairs and connections quickly and correctly. Tip! The speed controller and reverse control are located in different housings, so you need to check them separately.