Dell laptop repair do it yourself

In detail: do-it-yourself dell laptop repair from a real master for the site my.housecope.com.

Hello everyone. If your laptop won't turn on or out of order, do not rush to carry it to the service center.

Via laptop diagnostics You can determine the cause of the problem yourself, and if it turns out that the problem is really serious, you will turn to the professionals at the service center for a solution. Most often, simple problems can be fixed by yourself.

In this article, we will look at the most common problems when using dell laptops.

It is very common for laptops to have power problems. And the point here is far from the manufacturer. It's just that most users do not pay enough attention to the battery, charger and power supply of their compact computer.

If the laptop does not charge or does not charge correctly, then it is advisable to take it for diagnostics to a service center or test a dell laptop charger on a similar working model.

This will allow you to pinpoint the cause of the problem and correct the problem using the solutions below.
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The first problems start when the battery level drops rapidly. This is the fault of the controller, which shows a low charge level of 30%, but in fact the battery is charged by 50-60 percent. In such a situation, it helps out very well laptop battery calibration .

It is much worse when the real capacity of the battery drops irrevocably. In this case, you will have to buy a new battery or try to fix the old one. New laptop battery dell will be approximately equal to the cost of repairing an old one in a service center.
If it is not yet possible to buy a new battery, then you can try to do laptop battery repair on one's own.
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Video (click to play).

You bought or repaired a battery and the laptop still won't charge. So there is something wrong with your dell laptop adapter or power plug. If, when the laptop is connected, the battery does not charge and when the plug position is changed, the charge resumes.

You will have to clean the contacts or spend laptop power connector replacement .

In the case when there is a malfunction in the power supply and the laptop does not want to charge under any pretext. Then there are also two options, you can buy a new one or try to make laptop power supply repair .

Of course, you can return the old power supply unit for repair, but its cost may exceed the cost of a new one. laptop power supply dell.
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In the event of a problem with the laptop keyboard, it can be cleaned and returned to working condition. If you spill liquid on the keyboard, then you need to act very quickly.

The first step is to remove the battery and turn off the laptop completely. Then it will be necessary to dry the computer by disassembling it to carry out cleaning laptop keyboard ... For detailed descriptions, see the article - flooded the laptop keyboard - what to do?

Laptop keyboard repair you can do it yourself. But it's best to take your laptop to a service center as quickly as possible. Since slowness in such a situation may end up for you with the failure of the entire laptop.

It is worth fearing corrosive liquid, which, when it gets on the keyboard, very quickly gets on the computer's motherboard.

If you just need to do replacing the keyboard on a laptop , then you can also perform this operation yourself.

Please note that keyboards are attached differently on different laptop models. At the link above, you can find out more about your type of keyboard attachment.

To avoid unnecessary costs for a service center, I recommend that you read the following articles, which will allow you to replace laptop components yourself.

- replacement of RAM and hard drive on a laptop

It is not difficult to change components. The main thing for self-repair is to adhere to the correct sequence of actions. Diagnostics first, then repair. Don't forget this.

That's all. May your first renovation be a success

Are you here "Do-it-yourself laptop repair. »Samsung, Dell» Dell Latitude x1

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  Charger (charge controller) is in charge. There is no such scheme on hand, I'll take a closer look later.
  - - - although the max1909 is also a charge controller.
        Or the controller himself died.
        Or the controller himself died.
        Well, mains power is switched by a p-channel field worker named Q507. Its gate, according to the laptop's circuit, is controlled by 20 feet mb3887, and since we have max1909 physically installed, according to the datasheet, the gate should be controlled by the 27th output (PDS) max1909. Taaax.
        Those. for a start, it would not be bad to look at the voltage at the drain of the Q507 when powered only from the mains and from the battery, in order to understand whether it is controlled and if it is carried out, then what is needed in this case to open and close the transistor. Since you indicated that the laptop is powered by a network with a dead battery, we can conclude that this field worker is alive.
        
        Do-it-yourself laptop keyboard repair using the example of a Dell inspiron 3421 laptop or one of the tricks of computer services
        
        Hello friends. From this article, you can gain invaluable experience and learn how not to fall for some of the tricks of the computer wizards. In general, I advise you to subscribe to the free newsletter of blog updates and you will always be aware of the release of new, always useful articles.
        
        Today we are talking about a Dell Inspiron 3421 laptop that came to me for repair.
        
        The reason for the request was that the laptop did not respond to keystrokes on the keyboard. And obviously no one will like this, right? The characteristics of this device are not of a high level, but it will still fit as an office unit:
        
        ٭Type: laptop;
        
        ٭Operating system: Linux;
        
        ٭Processor: Intel Celeron;
        
        ٭Processor frequency MHz): 1500;
        
        ٭Processor model: 887;
        
        ٭Number of processor cores: 1;
        
        ٭Memory capacity (MB): 2048;
        
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        ٭Memory frequency (MHz): 1600;
        
        ٭Memory type: DDR3;
        
        ٭Screen size: 14 ″;
        
        ٭Screen resolution: 1366 × 768;
        
        ٭Screen backlight type: LED;
        
        ٭Video adapter: built-in;
        
        ٭Video adapter chipset: Intel HD Graphics 2000;
        
        ٭Optical drive: DVD-RW;
        
        ٭Hard disk capacity (GB): 500;
        
        ٭Hard disk type: HDD;
        
        ٭Rotation speed (rpm): 5400;
        
        ٭Network card: 10/100 Mbit / s;
        
        ٭Bluetooth: yes;
        
        ٭Wi-Fi: 802.11n;
        
        ٭3G modem: no;
        
        ٭Interfaces: USB 3. VGA (D-Sub), HDMI, microphone input, audio / headphone output, LAN (RJ-45);
        
        ٭Flash card reader: yes;
        
        ٭Positioning device: Touchpad;
        
        ٭Built-in microphone: yes;
        
        ٭Webcam: 1.0mpx;
        
        ٭Battery capacity (mAh): 2700;
        
        ٭Dimensions (LxWxT) mm: 346 × 25x245;
        
        ٭Weight (kg): 1.99;
        
        Later it turned out that a couple of months ago, people threw a cup of coffee leftovers onto the keyboard. And, as usual, everyone remembers the most basic external factor characterizing the cause of the breakdown some time after the device was handed over for repair. It's good that I only got around to repairing the note at the moment I discovered this secret with liquid. Usually, after spilling liquid on the keyboard, it must be immediately removed from the laptop and the device must be rinsed and dried. Some laptop models have special drainage points, and due to this, the keyboard does not suffer, and most importantly, the liquid does not leak out to the chips.
        
        If you suddenly spill liquid on the keyboard, then immediately remove it from the laptop. If this happened with a stationary computer, then it all depends on the interface for connecting the keyboard, read more about the interfaces in the article "Computer motherboard."
        
        The USB keyboard must be disconnected immediately from the port. If it is a PS / 2 interface, then you must press the power button of the PC and hold it until it is turned off.In the first case, the liquid can lead to the closure of the "south bridge" through the USB port, and in the second, to the burning of the PS / 2 port or its "controller". We rinse such a keyboard, and after drying it usually works no worse than a new one.
        
        Having received a laptop from a customer, I decided to make sure that there was a problem with my own hands.
        
        I didn't have to do any complicated diagnostics, if the keyboard does not work, then it is immediately clear. Indeed, I did not find a reaction to keystrokes. We get down to removing the keyboard. In the video below, I show how this is done:
        
        You need to remove the motherboard! Here are the freaks
        Turn over, unscrew the bolts
        
        Turn over and remove the keyboard. To do this, pull the latches on its upper side
        
        Unscrew the bolts and remove the top panel
        
        We unscrew the marked and remove the board. To remove it, it is also necessary to unscrew the bolts of the left display hinge and raise it.
        
        You can clean the cooling system and replace the thermal grease.
        
        But we got to the hard drive.
        
        And this suggests that you are a good person. My bow to tolerance
        
        In this guide, I will explain how to disassemble a Dell Inspiron R15-5521 or Dell Inspiron 15-3521 laptop by myself.
        
        I will dismantle all the major components from the laptop and show you how you can access the cooling fan.
        
        You can use these instructions to replace failed laptop components or clean the radiator and cooling fan.
        
        Before starting work, you need to make sure that the laptop is unplugged from the power supply.
        
        As always, my advice is to keep track of all the screws you have removed and store them separately at each disassembly stage. This will assist you in the reassembly process of the laptop.
        
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        Unlock and remove the battery.
        
        Loosen the two screws securing the service cover to the bottom of the laptop.
        
        Lift up and remove the service cover. You will have to apply some effort to remove the maintenance cover.
        
        STEP 3.
        Now you can access the hard drive, memory modules and CMOS batteries.
        
        STEP 4.
        Remove the two screws securing the hard drive to the laptop.
        
        STEP 5 .
        Pull the hard drive to the left to disconnect it from the motherboard.
        
        Now lift up the hard drive and slide it out of the laptop.
        
        You will find five keyboard retention latches at the very top.
        
        By the way, in order to remove the keyboard you do not have to perform the previous steps; it is enough to perform steps 7 to 13.
        
        These latches are spring loaded.
        
        Press down on the latch with a small screwdriver. The latch will move inside the laptop.
        
        Simultaneously, while the latch is depressed and unlocked inside the laptop, insert a sharp object under the keyboard and lift it slightly.
        
        This will prevent the latch from locking the keyboard again.
        
        Do the same for all the other latches.
        
        When all five latches are unlocked, you can lift the keyboard away from the laptop.
        
        Besides the five latches on the top side, there are two plastic tabs on the left and right sides of the keyboard.
        
        You will have to use some force to move the keyboard away from these latches on both sides.
        
        Lift it up and pull it towards the display.
        
        Turn the keyboard upside down.
        
        You can now access the keyboard cable connector on the motherboard.
        
        You will need to unlock the connector before disconnecting the cable.
        
        Lift the left side of the connector with your fingernail.
        
        The latch will open 90 degrees.
        
        The retainer (brown) must remain attached to the socket on the base (white).
        
        The following screenshot shows the connector in the open position.
        
        As you can see, the retainer is still attached to the base of the connector.
        
        You can now pull the keyboard cable out of the connector.
        
        Lift and remove the keyboard from the laptop.
        
        Now, if the keyboard is damaged, then it can be replaced with a new one. And if the purpose of disassembling the laptop was not in the keyboard, then we continue to disassemble further.
        
        Remove all screws on the bottom of the laptop.
        
        Unscrew the upper cover (palm rest) securing bolts.
        
        Disconnect the key board cable and trackpad cable from the motherboard.
        
        Use the same technique as for disconnecting the keyboard cable.
        
        Raise the cable holder.
        
        Pull the cable out of the connector.
        
        You can now begin to separate the top cover (palm rest) assembly from the bottom.
        
        I use a pick for this. You can use a piece of plastic.
        
        Continue to separate the top cover from the bottom.
        
        You will have to use some reasonable force to separate the two. There are hidden latches securing them.
        
        Remove the top cover (palm rest).
        
        Here we are at the bottom under the top cover (palm rest).
        
        This is where you can access the trackpad, trackpad buttons board, and power button board.
        
        Before removing the motherboard, you need to disconnect and remove the wireless card module.
        
        You will have to disconnect the two antenna cables. Remove the screw holding the wireless card and slide the card out of the slot.
        
        This is how you can disconnect the cable from the antenna of the wireless card.
        
        Just lift the cable to the board behind the gold connector.
        
        Remove the screw holding the motherboard.
        
        Disconnect the following cables:
        
        2. Socket for connecting the power cable.
        
        4. I / O board cable.
        
        This is how you can disconnect the video cable.
        
        And a connector for connecting the power cable.
        
        Start removing the motherboard from the laptop as shown in the following figure.
        
        Remove the motherboard.
        
        You can access the cooling module (heatsink and fan) from the other side of the motherboard.
        
        In order to disconnect and replace the fan you will have to disconnect the fan cable and remove one screw.
        
        When the cooling fan is disconnected, you can clean the fan and heatsink.
        
        If the fan requires replacement, you can replace it with a new one.
        
        Here is the bottom of the laptop after removing the motherboard.
        
        Video (click to play).
        
        The power connector is located in the upper left corner of the laptop.
        
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