In detail: do-it-yourself Samsung laptop repair from a real master for the site my.housecope.com.
Hello everyone. It is not always possible to repair a laptop in a service center.
Especially when the problem is in some trifle for which the service center is asking too much.
In this article, we will look at how to independently diagnose and determine the breakdown on Samsung laptops.
The most common problems with laptops are: problems with the keyboard, power supply, matrix and overheating. To more accurately determine the cause of the malfunction, you must do - laptop diagnostics .
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The first sign of overheating is when the laptop shuts down or reboots during extended work at the computer. In this case, it will be necessary to look at the temperature readings through the AIDA program, the possibilities of which I discussed in detail in the article - computer diagnostics .
Having identified the part that is overheating and first of all carry out cleaning laptop from dust ... Remember to replace the thermal grease on the processor and graphics card. If it doesn't help, then read the article - why laptop does not turn on .
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It is not uncommon to have problems with the image. This is often the fault of the laptop matrix. Distortion of colors and images when changing the angle of inclination of the screen directly testifies to this.
Replacing the laptop matrix is necessary if the problem is in the matrix itself. There are situations when the problem is in the matrix loop. If so, then only the loop will need to be replaced. The service center will help you find out exactly what the problem is. They will also make a replacement there.
If you are confident in your abilities, then you can replace the loop or matrix yourself. I described this process in more detail in the article - laptop matrix replacement .
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The video card is also responsible for displaying the image. If during serious loads in games or complex applications appear video card artifacts ... You have to do reballing (warming up the video card).
But it's better to do replacing the video card in the laptop ... When choosing a new video card, pay attention to the connection interface of the old one. They must match.
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Filled laptop keyboard - help! Every day, several times in a panic, laptop owners come running to service centers with these words.
In fact, if you spill some clean water. Then most likely nothing will happen. But if some corrosive liquid is spilled in sufficient quantities, then everything can end much more sadly.
In any case, the procedure is as follows. Turn off the laptop, unplug it, take out the battery and put it to dry. If you have spilled a lot and are not sure whether the liquid got on the motherboard or not, then we will quickly take the laptop to the service center.
In the case when the service center is not close. You will have to disassemble the laptop yourself. We remove the keyboard and look at the condition of the motherboard. If it is clean and there are no signs of liquid getting on it, then everything should be in order and after cleaning laptop keyboard , which should start without problems.
If you see that the motherboard has changed color from the ingress of liquid. Then you will have to take the laptop to a service center and you may need to replacing the motherboard in a laptop .
When disassembling a laptop for the first time, be careful when removing the keyboard. They are attached differently on different models, so in a rush you can damage the fasteners. In some cases, you may need laptop keyboard repair ... If repairs are unsuccessful, it may be necessary to replacing the keyboard on a laptop .
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A new battery for a samsung laptop may be needed when the battery life has long been less than expected and the battery controller constantly shows the wrong charge level.
Before replacing with a new one, try to do laptop battery calibration ... Oftentimes, this simple procedure will help bring the battery back to normal. If this does not help, then it is better to replace laptop battery .
You can of course try to do laptop battery repair on one's own. But if you doubt your abilities, then it is better to take a closer look at the new one.
Poor laptop charging can be caused by the laptop's power connector. It is very simple to check it, just turn it to another position and charging resumes. In such cases, you will need laptop power connector replacement ... You can send it for repair or try to do it yourself.
If everything is in order with the connector, then pay attention to laptop power supply samsung. Most likely there are problems in it.
Laptop power supply repair can cost more than a new power supply. It may be more expedient to purchase a new one.
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If the breakdown is not serious, then you should not rush to carry it to the service center. To begin with, it is worthwhile to diagnose the laptop and then if it is difficult to solve the problem on your own, take it to the service center.
So that in the future, problems with the laptop do not arise. Try to clean your laptop from dust and replace thermal paste at least once a year. It will not be superfluous to improve the cooling of the laptop.
Think about laptop stand maybe it will help you avoid many problems in the future. In addition, the simplest version of the stand can be made independently from improvised means. Good luck 🙂
Samsung occupies one of the most important places among laptop manufacturers in the entire market. But, if you try, you can easily quickly disable it just out of stupidity. In this online example, a typical situation is shown when the owner of the laptop purchased a Chinese charger and, accordingly, connected it to it, respectively, smoke came from the connector and smelled of fried. So that you do not get stuck in a similar situation, do not try to stick a Chinese charger.
Well, if it so happened, then We can help you with visual teaching - "Samsung laptop repair do it yourself”That will put your home laptop on its feet. We can also teach the art of design using - Photoshop video tutorials.
Are you here "Do-it-yourself laptop repair. »Samsung, Dell» Samsung R560 disassembly and cleaning
For complete disassembly and cleaning of the cooling system, remove the battery and unscrew all the bolts.
We take out the hdd (hard drive) by pulling the tab circled in yellow, it is not necessary to remove the RAM circled in blue, unscrew the bolt circled in red, unfasten the antennas and remove the wifi moduleRemove the top panel cover
In order to finally disconnect the keyboard, you need to pull off the three clips holding it down, for example with a screwdriver
The keyboard is removed.
Disconnect the loops circled in yellow, unscrew the bolts circled in red and remove the display.After removing the drive, unscrew the bolt under it
Disconnect the ribbon marked in red and unscrew the bolts marked in yellow.
When removing the connector, you can pry it off with a screwdriver
Remove the motherboard and turn it over.
Disconnect the cooler connector circled in red, unscrew the bolts circled in yellow and remove the radiator, unscrew the bolts circled in green and remove the cooler itself.
We clean the radiator grill, cooler, remove the old thermal paste, apply a new one.
Reassemble in reverse order.
From the inside, gently pry off the front panel (frame) and thus walk along its internal pyrimeter
Unscrew the inverter bolts
Do not completely unscrew the hinge bolts, so that you can get to the bottom bolt of the matrix guides
Remove the guide bolts
Put the matrix on the keyboard
But you do all of the following at your own peril and risk, and in principle, like everything else
The difference in the parsing of matrices lies in the location of the bolts, adhesive tapes, etc. and their quantity.
I am disassembling the matrix not from this model. But everything is the same.So, peel off the scotch tape, Velcro and any other garbage, both marked with arrows and not marked
We unscrew the bolts (they can be not only here, but also from the end, depending on the model)
There are latches around the perimeter, pry open them and remove the frame
We handle these trains very carefully, if there is damage in this area, then vertical stripes will go across the screen.
Liquid got between the films most quickly. Accordingly, they need to be removed, rinsed in warm water, dried, and reinstalled. Don't forget about cleaning the matrix. All operations must be carried out in a dust-free environment. Into the house. conditions, a bathroom would be more suitable. The films should be free of fingerprints, as well as on the matrix. When installed backwards, they must be in the same order in which they were originally installed.
Previously, having a laptop at home, in addition to an ordinary stationary PC, was considered almost a luxury. Today this is a common thing, but lately one can observe a slight decline in interest in laptops in favor of tablets and smartphones ...
However, it is definitely too early to "write off" portable computers, contrary to all forecasts, but it is a pity to repair them, but sometimes you have to ...
Any technique tends to become outdated and break down. And the more complex it is, the more often it will demand attention to itself. Unfortunately, laptops are no exception ...
- clogging of the cooling system with household waste and (as a result) overheating of the processor;
- mechanical damage to the motherboards and LCD matrices of the monitor as a result of drops or sudden changes in voltage in the network (if the laptop is used as a stationary working PC powered from an outlet);
- chafing or burnout of loops of the keyboard, touchpad and monitor;
- the ingress of liquids into the laptop (as a result of a short circuit, anything can burn out);
- failure of any components (hard drive, RAM, WiFi module, etc.).
As you can see, there can be quite a few reasons for repair. In addition, the need to open a laptop may also be caused by the desire to make a planned upgrade with the addition of, for example, a new RAM strip or a more powerful processor.
To disassemble a laptop at home, we need at least two screwdrivers: a small Phillips screwdriver for unscrewing the screws securing the case and parts, and a thin flat one for neatly opening the case.
Step 1. It is worth starting disassembling any laptop by disconnecting it from the network, turning it over and disconnecting the battery. So, firstly, we will completely de-energize the device (accordingly, we will avoid a short circuit), and secondly, we will open access to the case locks (in some models, a pair of case screws may be hidden under the battery). To remove the battery, you usually need to simultaneously pull the floating clips in different directions and pull the battery towards you.
Step 2. Next, we carefully study the location of the screws that hold the case and keyboard. Usually the latter are marked with the inscription "kbd" and there are from three to seven of them. The rest of the screws (which are not marked in any way) will be case and they will need to be unscrewed in order to disassemble the laptop.
At this stage, the main thing is to remember which screw and where it was, since they come in different lengths and with different thread runs! For this, a special plastic sorter with several compartments would be ideal. However, the cogs can be easily arranged in groups and on an ordinary white sheet of A4 paper. The main thing is that you remember where each of them comes from!
Step 3. When everything is unscrewed, we take a flat screwdriver with a thin sting in our hands and find a place where you can insert it into the gap between the bottom and top covers of the laptop case. We do this carefully so as not to gouge the plastic. When the place is found, push the screwdriver slightly up and down alternately to create a lever. As a rule, after pressing in the right direction, the plastic clips inside are released and the case will begin to open.
In the same way, we go through the entire perimeter of the case with a screwdriver. As a result, we should get a neatly removed undamaged bottom cover and access to the motherboard and laptop parts.
In order not to damage the cover, you need to remember one single rule: "DO NOT APPLY HIGH FORCE when pushing on the screwdriver."
Step 4. After removing all large parts, carefully inspect the motherboard and unscrew the screws that remained unscrewed. At the same time, it is not necessary to unscrew the screws of the radiator that cools the processor (unless you are going to change it or lubricate it with new thermal grease).
Step 5. When everything is unscrewed, the last step remains - disconnect the loops.
In our experimental netbook, after unscrewing all the screws that held the motherboard, the only "fasteners" were the cables:
- monitor cable;
- sound loop;
- touchpad loop;
- keyboard loop.
The easiest way is to turn off the audio and video loops. They are simply pulled out of the socket with a flat screwdriver (pulling by the wires is undesirable). Gently pry on alternately on both sides and slowly pull it out.
The situation with the touchpad loop is a little more complicated. It is pressed by a plug that needs to be pulled out. However, this plug has two small tendrils on the sides that hold it in position. So as not to break these antennae, first slightly drown them, and only then pull them out.
The last step is to disable the keyboard. In principle, this can be done without disassembling the entire laptop. It is enough just to unscrew the screws marked "kbd" and the keyboard can already be pulled out. First, you need to pry it off with a thin screwdriver from above. Then, when the top edge is free, slightly pull the keyboard upward until the bottom edge pops out of the tabs. Now, everything is held only by the cable, which must be disconnected from the motherboard:
The fastening of the keyboard cable may be different on different laptops. These can be plugs (as described in the case of the touchpad), pressure plates or simple plugs. In order to properly disconnect and not break, always use a search query such as "how to remove the keyboard on a laptop (your model)".
In the case of the Samsung N145 netbook, we are dealing with a tricky clamping mechanism that is very similar to a regular plug. To open this mechanism, you just need to pull it up, after which the cable will be released and we can pull it out.
When the cover is safely removed, you can take a closer look at the internal structure of the laptop:
Inside, the following components will definitely be present:
- motherboard, to which all parts are attached;
- hard drive (usually 2.5-inch SATA or SSD);
- one or several strips of RAM (in modern systems, most often DDR3 of a reduced form factor);
- a processor with (most often) an air cooling system under a copper radiator;
- speakers.
Optionally may also be present:
- video card (usually in laptops of middle and higher price categories);
- WiFi, Bluetooth, NFC and / or infrared module for wireless connection of peripherals and devices;
- various expansion cards, such as card readers, additional USB 3.0 or FireWire ports, etc.
Already at this stage of disassembly, we have access to almost all components that can be replaced, so we can no longer disassemble. Just change the part that requires it and you can collect everything as it was.
Before disassembling the laptop completely, please note that in some models, special revision holes may be provided on the back of the case to access components such as RAM, hard drive, expansion ports, etc. These openings are usually covered with a small cover that attaches to the case with just one screw and allows easy access to the part without having to open the entire case.
The memory card itself can be held in laptops either using a special clamping bar (which needs to be pushed aside), or (as in our case) due to two clamping metal plates on the sides. The latter are rigidly fixed, but can slightly bend away from the memory bar. Accordingly, to release it, you must simultaneously squeeze out both pressure plates. The board is inserted back with light pressure until the latches click.
The BIOS battery may be of interest if you begin to notice that your laptop does not turn on the first time or even stops loading beyond the startup black screen. In this case, it may well be that the problem is in a dead battery that needs to be replaced.
Alas, replacing the BIOS battery in a laptop is much more troublesome than in a regular PC, since it is not connected directly to a special socket, but through an adapter. The easiest, but also the most expensive way is to buy a similar fully assembled battery with an adapter and an adhesive part to fix it on the motherboard. But there is also a more budgetary solution :)
If there is no ready-made battery or it is indecently expensive, you can make it yourself 🙂 To do this, remove the old one and free it from the black insulation to gain access to the wiring. Next, take a new battery of the same type and attach the removed wiring to it (red is usually a plus, and black is a minus).
To keep the wires and to insulate the battery itself, it is best to place the resulting structure in a heat-shrink tube of a suitable diameter. So we will get an almost perfect adhesion of contacts without soldering and an appearance, almost as in the original 🙂 It is easiest to glue the resulting structure to its rightful place on thin double-sided tape.
We take a close look at our motherboard for the screws that still hold it in place. Two of them are found on the hard drive brackets. We unscrew them and carefully take out the hard drive itself:
In laptops, hard drives are usually attached to the motherboard using a special "basket", which is fixed to the case with four screws, and connected to the motherboard using a special ribbon cable. To, for example, replace the hard drive with a new one (more productive or capacious), you just need to disconnect (again carefully) the cable plug from the old one, after which, when the old hard drive is already in our hands, remove it from the "basket" and replace on new.
Another screw that might prevent the motherboard from being removed can be located on the WiFi wireless module. Even if the retaining screw is not there, then this module will still have to be disconnected, since two wires go from it to the antenna, which is located in the display case.
When assembling, we repeat all our actions in reverse order. This is where the photos that you took during disassembly (if you took them) and correctly sorted screws can come in handy. When you put on the case cover, do not rush to immediately screw it on. Tighten only the screws holding the keyboard and try to start the laptop.
If the operating system boots, then try turning on the regular Notepad and test the keyboard's operation by typing all the letters on it one by one. And only if everything works as it should, you can turn off the laptop and tighten the rest of the screws. Congratulations on your successful build!
As you can see, everyone can disassemble, replace the part and reassemble their laptop!
If you work carefully and thoughtfully, then everything will work out for you!Solar power plant - a modern way of supplying electricity to our home. The question of using alternative energy sources arises for many. And this is not surprising, because the constant rise in electricity prices makes people think about it more and more often. So the question arises: why not use free inexhaustible natural resources - wind, sun, water? Let's talk today about solar energy, or rather a solar power plant.
So the fermentation ended ... the mash turned into a wash. Now it is necessary to distill the mash and separate the alcohol from other substances.
The process of separating alcohol from the wash is called - distillation or alcohol stripping process. (article for persons +18!)
When building any circuits (transmitter, receiver, metal detector, etc.) for radio amateurs, it is necessary to make a coil. In foreign circuits, wire sizes (and not only wires, but also pipes, rods, etc.) are often found in obscure units in SWG, AWG, BWG, In.
To convert readings to more familiar millimeters for us, you can use the tables below:
In this topic, we will touch on how easy and simple it is to disassemble a laptop and clean or replace components.
Internal cleaning of the laptop, fans, replacement of thermal paste from 1200 rubles.
After long-term use of the laptop, all users need to clean the cooling system. What is cleaning for and how necessary is it for your computer? Cleaning the cooling system and replacing thermal paste is an activity that every laptop needs to avoid overheating and improve the performance of the laptop.
1. Clean the cooling system only if your cooling system is clogged with room dust, animal hair or any kind of dirt.
2. Also, while cleaning the cooling system, you can replace the old thermal paste with a new one, this will also reduce the heating temperature of your central processor and video card.Each laptop model has its own characteristics, sometimes the method of disassembling a laptop is not much different from this method, but in any case, we recommend reading the topic on disassembling exactly the laptop that you go to disassemble and assemble yourself.
For disassembly, we only need a Phillips screwdriver.1. Turn our laptop over and unscrew all the screws from the back of the case, remove the battery and a couple of covers that cover the RAM and hard drive. We remove all the components in order to avoid damage in further disassembly, on our right there will be a DVD-ROM, which we can easily pull out of the slot, but if it does not lend itself, then carefully examine the surface of the laptop for any remaining screws. Unscrew all the screws under the removed components and under the removed battery.
2. We turn our laptop over to us with the front part, that is, with the keyboard and begin to snap off the keyboard, you can use it like your nails, but it is better to use a plastic tool specially designed for opening, as it will not damage our case during disassembly.
3. You do not need to make strong efforts, if you cannot remove the keyboard, make sure that all the screws are unscrewed, and if everything is okay, then carefully remove our keyboard, pay attention not to damage the keyboard cable coming from keyboards and connecting to the motherboard.
4. Now, after you have disconnected the ribbon cable from the laptop board, you can safely remove the keyboard.
5. Disconnect all cables that connect to the motherboard.
6. Unscrew all the screws on the top of the cover and remove it.
7.And so we got to the motherboard, the motherboard was re-fastened with seven screws, unscrew them and disconnect the power cables and everything that you find on the motherboard.
8. We remove the motherboard, now your laptop is disassembled and you can clean the cooling system and replace the thermal paste yourself.
Also, if you have any difficulties in cleaning the laptop yourself, then our masters will be happy to do this work.
My hobby is simple repair of laptops, smartphones and other devices, and this is exactly the case when the hobby even brings some money. I want to share some repairs, maybe someone will benefit from my experience. I will also be glad to criticism and help from more experienced repairmen. So, the first post is about the Samsung NP370R5E laptop.
Usually, replacing the keyboard on a laptop is a matter of a couple of minutes. But not in the case of modern laptops, where replacing the keyboard requires disassembling the laptop, and completely! And this is just the beginning. In general, it was the same hemorrhoids.
Here is the device itself and the new keyboard. The laptop came with a diagnosis - some keys do not work. Verdict - keyboard replacement.
By the way, in my city (Chelyabinsk) I did not find the required keyboard, although I know all suppliers of spare parts and disassembly from used ones. Had to order from the capital. The quality of the keyboard is normal, only the keys are a little dull. So we begin to disassemble.
The battery is hidden in the case, so we begin to unscrew the bolts. Remove the bottom cover with a spatula and a plastic card. First of all, we remove the battery, this is the rule for any repair or maintenance.
To get to the keyboard, you need to remove everything: mat. board, hard drive, speakers and even a cover with a matrix!
There is a black protective film under the motherboard, protecting the inside of the laptop from moisture when flooded. I tear it off gently. It can be seen that the beech was flooded: streaks from the liquid are visible. And for some reason a lot of hair. How they got there is unclear.
Modern laptops are less and less maintainable, that's just such a case - the keyboard is attached to the top cover of the laptop with small rivets, of which there are about 50 pieces. That is, Samsung engineers were not supposed to replace the keyboard. I will work on a collective farm: I carefully cut off the heads of the rivets with a scalpel, trying to leave as much of the rivets as possible, for they will still come in handy.
Half an hour of painstaking work and the pressure cover is removed.
I cut off the rest of the rivets, install a new keyboard, and a pressure cover. I grab a few rivets with a soldering iron.
I restore the rivets like this: I press the keyboard with my fingers, take the cut rivets with tweezers and solder it. After that I ivy the melted rivet with a scalpel handle. It turns out like this:
Another 40 minutes of work and all the rivets are restored. All this economy is held quite tightly, since there are many rivets themselves. I'll clean up the cooling system and replace the thermal paste in one go. Yeah - before that, KPT-8 was smeared in the service. It's on a Core i5 processor.
I will remove this abomination with isopropyl alcohol and apply MX-4. I also disassemble the radiator, clean and lubricate the cooler, since it is collapsible. Not much dust.
I put everything in the reverse order, check - all the keys work, I do a stress test on heating for half an hour. Everything can be given.
Video (click to play). Total spent 3 hours. Laptops with internal key mounts are absolutely not worth filling. Most new laptops are just like that. Thank you for your attention!
Solar power plant - a modern way of supplying electricity to our home. The question of using alternative energy sources arises for many. And this is not surprising, because the constant rise in electricity prices makes people think about it more and more often. So the question arises: why not use free inexhaustible natural resources - wind, sun, water? Let's talk today about solar energy, or rather a solar power plant.
