How to disassemble a laptop power supply? How to open the internal, external power supply

The laptop power supply is capable of ensuring the smooth operation of the laptop in the absence of a battery or when it is completely discharged. Also, with its help, you can charge the battery, thereby enabling the laptop to work autonomously - without using an electrical network. Sometimes it happens that the power supply unit fails, the question arises before the user - is it possible to repair the device yourself or have to buy a new one? The purchase of a new device will cost a pretty penny, so for starters it’s worth trying to repair the device yourself.

How to disassemble a charger from a laptop

Before proceeding with the repair, it is necessary to establish the cause of the malfunction and its location. To determine the malfunction from the user, most likely, penetration into the "heart" of the power supply will be required. Before you open the laptop power supply, it is better to familiarize yourself with the advice of specialists, since this process may vary for different models.

The small-sized laptop battery pack is pretty simple. If, in your opinion, the reason for the lack of charging lies in the malfunction of the adapter, then you can check this option using a special program. The most common causes of a power supply failure are:

• damage to the socket;
• power surges;
• fracture of the cord.

Tools for work

To work, you need a set of simple tools:

• knife, scalpel or other similar tool for opening the block body;
• screwdrivers;
• soldering iron with solder;
• napkins, gauze or other cloth;
• glue and syringe;
• gasoline or another solvent (optional). According to some experts, these tools greatly simplify the opening of the power supply.

How to open the internal laptop power supply

Access to the internal power adapter is much more difficult than to external. The reason lies in the need to open the laptop case.

Removing the bottom panel

All known laptop models are disassembled approximately the same way, that is, they have an identical internal device and units that require dismantling.

Important. It is worth remembering that the independent removal of the bottom panel of the device deprives the user of the right to warranty service, that is, if the laptop is still under warranty, it is better to return it for repair to service center.

The bulk of the work comes down to unscrewing a large number of fixing screws. In order not to confuse and not lose the screws, it is better to prepare a container with several compartments in advance.

Important. Before disassembling a laptop, be sure to turn off the battery. If this is not done, then there is a risk of a short circuit, which will inevitably lead to costly repairs.

When performing work, the following sequence of actions must be observed:

• Dismantling the protective plate from the RAM and hard disk;
• disassembling the hard drive, otherwise it may interfere with further work;
• RAM can not be dismantled, but you will have to get rid of the drive by unscrewing only 1 screw;
• then all remaining screws are loosened. It is necessary to get rid of all the fasteners, otherwise there is a high risk of breakage of the plastic elements of the case;
• without unnecessary problems, the keyboard is dismantled - on the side facing the screen, there is a special snap-off fastener that snaps off with a conventional screwdriver;
• to completely remove the keyboard from the case, you must disconnect the cable;
• following the keyboard, all remaining loops are disabled;
• undocking of the upper and lower covers;
• to remove the motherboard, all loops are turned off and the screws are unscrewed;
• there may be power cables on the inside of the case - they are also turned off.

Board shutdown, diagnostics

To dismantle the power supply connector from the "motherboard", you must perform:

• by means of a screwdriver, unscrew the screws securing the connector to the housing. For some models, it will initially be easier to dismantle the "neighboring" elements, and then disable the loops;
• the appearance and size of the board may vary depending on the model;
• you should be careful, since one of the fixing screws may be common with the screen;
• dismantling the connector;
• dismantle of a clamp.

Important. With self-diagnosis and the desire to repair the connector, you should be careful. If it is damaged, there is a high probability of problems with the operation of the entire laptop.

The main causes of a malfunction of the internal power supply are power surges and careless connection of external devices. Do-it-yourself repairs can lead to more serious consequences.

How to disassemble an external laptop charger

For an external adapter, the main difficulty of its analysis is the lack of fasteners. The reason is that, according to the manufacturer, the device cannot be repaired at home and therefore it is sealed from the inside.

Opening the case and removing the board

You can open the case of the external adapter using a screwdriver, knife or other sharp object. A number of craftsmen, before opening, neatly pour a seam through a syringe with gasoline, which supposedly dissolves the plastic and simplifies opening the case.

With gentle palm strokes on the screwdriver handle inserted into the groove, you can open the adapter. Some power supplies have a special “strap” located on the long side of the unit - it will disconnect itself after opening the case.

After dividing the case into 2 parts, it will not be difficult to detect the battery. It should be inspected for mechanical damage. If they are not identified, then it is worth moving on to the board, which is carefully removed from the case.

We take out and disassemble the board

The board is removed carefully from the case, it is not attached to the case, so it is better to try to keep it in its original form. Now it’s worth doing a troubleshooting.

Board inspection and sealing

After external inspection of the board and in the absence of visible damage, you need to measure the voltage at the output of the board. If the output voltage is consistent, it will be necessary to remove the metal housing by soldering it from the board. The plug limiter is carefully cut, the excess elements of the wires are cut. The whole parts of the wire are soldered to the connector,

The case of the power adapter sits on the glue - it is working again. If disassembled carefully, the case will not be damaged.

Important To repair more serious malfunctions of a laptop power supply, you will need a number of professional instruments, such as an oscilloscope, tester, etc. Therefore, it is better to entrust serious repair work to professionals who have the necessary equipment in their "arsenal".