PC power button. Operation and repair of the washing machine power button

If the power button of the laptop does not work, no key combination will be able to “revive” the switched off device - in this case, the device simply does not respond to any presses. You can simply take the laptop to a service center to replace the broken button, or try to fix it yourself. Next, we will tell you how to turn on a laptop without a button, without resorting to complex repairs and replacement of expensive components.

Rule out causes of the problem that are not related to the power button

The fact that the laptop does not turn on when you press the power button may be due to other faults that are completely unrelated to the specified element. Before disassembling your laptop, rule out the following common reasons why it sometimes won't start:

1. Most often this happens if the device's battery is not charged enough;
2. The power connectors may be faulty;
3. The power adapter is intermittent or not functioning at all.

If these reasons are not the source of the problem, there is every reason to believe that it is the device’s power button that has failed.

Replacing the power button

To perform this action, you will either need to dismantle the laptop keyboard or disassemble the device itself. For disassembly instructions, please refer to the specifications for each specific model. Sometimes the "Power" key may even be soldered to the motherboard. In this case, you will have to look for a similar one and resolder the contacts.

In some devices, for dismantling it will be enough to simply remove the panel above the input device by prying it off with a screwdriver.

But in most cases, to get to the power button and its cable, you need to remove the input device. It is usually secured with plastic clips. Removing a keyboard with such a mount is not difficult even for a beginner:

Next, all that remains is to find a board that works in conjunction with the device’s power button, as well as a thin cable connecting it directly to the power button. Having dealt with the situation, disconnect the cable from the supposedly faulty key. You need to make sure that it is working properly, for which you close the contacts at the end, for example, with a screwdriver or an ordinary pen.

If the device responds to contact closure and boots without problems, then the following options are possible:

1. You can remove the power button from the socket and insert the end of the cable into the hole formed in the case. You will need it the next time you turn it on - just close the contacts as described above.
2. Try to repair the button yourself, as its structure is very primitive. Sometimes exactly the same one can be found on sale.

Another possible option is to close the contacts not on the cable, but on the board itself using the same screwdriver or pen, to do this, remove it from the socket on the motherboard.

Do not remove the keyboard cable while doing this. If the laptop turns on, replace the input device, carefully secure it with the plastic fasteners, and then, instead of turning off the laptop, put it into sleep mode. After that, it will start when you press any key.

Repairing the cable

Often the reason for the inability to turn on the laptop is not the button, but the cable itself, which has some kind of damage. It can easily be damaged when cleaning the laptop from dust - sometimes a small bend is enough and the cable breaks. This usually occurs where it is inserted into the button or board connector.

In these cases, the remaining length is usually enough to connect the elements, which means the end of the cable can simply be cleaned on one side and used further.

For this you will need:

• scalpel or very sharp knife,
• Super glue.

After drying, all that remains is to insert the prepared end of the conductor into the button connector. After the cable is restored, the laptop should start from the button as usual. If this does not happen, you will have to look for these components on sale or use the laptop as described earlier, never turning it off completely.

As a result of strong physical impact or at the end of its service life, the mechanical Power button on a mobile device may fail. It would seem that without this element it is simply impossible to turn on a smartphone, but in reality this is not the case. There are several ways to enter the device menu when the power key is not working. Let's look at how to turn on your phone or tablet without the Android power button.

Ways to start Android without the Power key

In theory, there are several methods to boot a gadget when the power button is broken. However, it is impossible to give a complete guarantee that at least one option will work. Here, a lot depends on the model of the mobile device and on the state it is in - active or turned off.

You can try to turn on Android without the Power key using:

• Charger and volume rocker;
• Computer and ADB debugging bridge;
• Special software.

How to boot Android if the phone is turned off?

If your smartphone is in an inactive state and the power button does not function, the first thing to do is connect a charger to it. On some device models, the operating system may start already at this stage.

If the desired does not happen, try holding Volume Down (Volume Up) or simultaneously holding two volume control keys while charging is on. These steps may cause the Recovery environment to load. This menu will allow you to reboot the gadget, that is, enter the Android graphical interface.

When the Power key is working, the smartphone is restarted through the resuscitation area using the reboot system now command. If this button does not function, after entering Recovery, wait a while - the phone should reboot itself.

Turning on your smartphone using the ADB debug bridge

Android Debug Bridge (ADB) is a special program that allows you to manage a mobile device via a computer. With its help, you can unlock root rights, change the firmware, enter Recovery mode and perform a number of other actions, including rebooting the phone. The only condition is that USB debugging must be activated on Android.

If you enabled this function before the power button failed, we try to turn on the device using ADB:

Instead of ADB, you can use the ADB Run utility to turn on the gadget via a PC. It is a simplified analogue of SDK Platform Tools, since almost all control commands are already written in its code. They only need to be launched using a certain number.

To log into Android via ADB Run, you need to:

How to boot Android if the phone is in sleep mode?

If the smartphone is turned on but in sleep mode, getting to its menu without the Power key will not be difficult. The main thing is to prevent the battery on your mobile device from being completely discharged so that it does not turn off.

There are several ways to activate the screen on Android:

• Connect a charger to your mobile phone;
• Double-tap on the display (this function is not supported on all smartphones);
• Press the mechanical Home button, if provided for your phone;
• Call the device from another smartphone.

In order not to limit your actions in the future due to the power key not working, its function should be transferred to another button (to Volume Up or Volume Down). This is done using special software, which can be downloaded from the Play Market absolutely free. One such program is Power Button to Volume Button. It works like this:

Now your phone will turn on with the sound control rocker.

You can also turn on Android using the built-in spatial orientation sensors. To do this, you need to download the Gravity Screen program, and then adjust the sensitivity of the vertical and horizontal orientation indicators.

Just yesterday the computer was working properly, but today when you press the power button it shows no signs of life. What could be the problem? Can I fix it myself or can I not do it without the help of a specialist? Let's figure it out.

As practice shows, in most cases the power button of the system unit “Power” stops starting the computer for the following reasons:

• lack of voltage in the 220 V electrical network;
• malfunction of the surge protector or uninterruptible power supply through which the PC receives power;
• damage to the network cable or lack of contact at its connection points;
• malfunction of the power supply unit (PSU);
• lack of contact in the block through which the power supply is connected to the motherboard;
• failure (lack of charge) of the BIOS memory battery;
• sticking or failure of the “Start” button on the system unit;
• The system unit button does not work due to blocking by a static charge.

If The computer does not respond when you press the Power button, the first thing you should start with is checking the reliability of the connection of the system unit to the network.

1. Make sure that the power supply button (on the back of the system unit) is in the “ON” position.
2. For a while, try connecting your computer to the outlet directly, without a surge protector.
3. Check whether the outlet itself works by connecting any other working electrical appliance to it.
4. Next, check the power cord for damage (especially if there are toothy animals at home). Make sure that the plug is firmly seated in the socket and that there are no signs of heat at the contact point.
5. It would be a good idea to check/replace the CMOS memory battery in which the PC configuration parameters are stored. If the computer is more than 5 years old, then it is recommended to replace the battery even for preventive purposes.

If all of the above measures do not produce results, you will have to open the system unit for a more detailed examination and diagnosis.

1. Remove the case cover and check if the LED indicator on the motherboard is lit.
2. The indicator lights up, which means power is supplied to the system unit.
3. If there is an LED, but it does not light up, check the contacts in the connectors and make sure there are no broken wires.

The next step is to diagnose the Start buttons.

How to check that the Power button on the system unit is in working order

The task of the system unit's Start button is to turn on the power switch. After this, the power supply carries out self-diagnosis, and if all network parameters are normal, the power supply sends the corresponding signal to the processor - the computer starts booting. All pre-launch activities take a split second.

If the Power button does not close the contacts well, the computer will not start.

To check if the start button works:

• Check the wires going from the button to the motherboard. The connection occurs through a chip that is placed on the contacts of the system board.
• Make sure that the chip fits tightly and is well fixed to the contacts.

To do this, carefully remove and reattach the connector;

1. Disconnect the computer from the network, disconnect the wires of the Power button;
2. Turn on the power to the system unit again and use a screwdriver to briefly close the PowerSwitch (PowerSW) contacts. If the computer starts, the problem is due to a non-working button.

Unfortunately, in most cases it will not be possible to purchase the “Start” button separately; you will have to replace the entire housing. However, there is an alternative way to fix the problem.

The simplest solution in this case would be to transfer the functions of the Power button to the Reset button, which is used very rarely.

To do this, just swap the two-pin connectors “power sw” and “reset sw”.

How to turn on a computer without a power button?

To turn on the computer without the Power button, do the following:

1. Remove the cover of the system unit case;
2. Find among the wires going from the front panel of the system unit to the motherboard a pair with the inscription on the Power Switch (PW Switch) connector;
3. Disconnect the indicated connector;
4. Using a screwdriver, connect the 2 exposed contacts with a screwdriver or the tip of a ballpoint pen. Closing contacts should be fast, literally in one touch.

VIDEO INSTRUCTION

Mechanical damage to the phone leads to malfunctions in its operation, and sometimes it is not possible to turn it on at all. A breakdown of the main button of a smartphone is not as tragic as it seems; depending on the situation, the problem can be completely solvable.

How to turn on a phone without a power button - if the phone is turned off

There is no full guarantee that the phone will turn on in this situation, because it all depends on the depth of the damage, but you can try. Let's consider the most effective options.

• We connect the phone to the charger, usually the screen at this time shows the charging level. Press the volume key on the side panel of the phone; some models at this stage include the boot menu. You can do the same while charging via a computer using a USB cable.

• The cable is also useful if the USB debugging option is enabled; this method applies to all Android devices. Download the Android Debug Bridge program and install it on your computer, connect the phone to the PC. Launch the command line and enter adb reboot, press the enter key. The program is designed for debugging devices and emulators, in other words, this is a great chance to turn on a phone with a non-working power button.

How to turn on the phone without the power button - the phone is on, but the screen is locked

Make sure your phone doesn't run out of power before the lock is unlocked. Turning on the phone in this case is much easier than in the previous one.

• We connect the phone to the charger and perform the steps described above. If the smartphone has a “home” icon, pressing it will unlock it in a matter of seconds. The phone and the physical button of the video camera will turn on.

• Let's ask a friend for help, his call to the phone will make the screen wake up.

How to turn on your phone without a power button - special applications

After successful activation, you need to install one of the free applications that launch gadgets without a power button.

• Gravity Screen turns on the phone when the user picks it up. The application works based on the device's sensors, if they are not of very good quality, the program will not work properly.
• Power Button to Volume Button turns on the phone via the physical volume button.
• Proximity Actions activates the device based on its proximity sensor.
• Shake Screen turns your smartphone on and off when you shake it.

The above methods are convenient and safe, but using them all the time is not very convenient and correct. We take the phone and take it to a technician for repairs as soon as possible.

 

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