Lenovo B570e Does Not Turn On After Water
Hello. Faults with the laptop keyboard cause a lot of inconvenience. Firstly, you lose the ability to quickly type text. Secondly, you will have to spend time visiting the service center to troubleshoot. In this article, we will consider measures for self-repairing a laptop keyboard.
1 Why the keyboard on the laptop does not work
The keyboard on the laptop does not work often due to the fact that it is filled with various liquids. If you spilled liquid on the laptop keyboard, then try to turn off the computer immediately after this happened. After that, pull out the battery and disconnect the power.
You have to disassemble the laptop to remove the keyboard. Read about it in the article. laptop keyboard replacement .
After that, the keyboard must be washed and wiped. Then she needs to dry. Only after that, you can insert it back and check. Read more about how in such cases to avoid laptop failure, read the article. what to do if flooded laptop keyboard .
At least a day should go to drying the keyboard, which is filled with liquid. Re-draw rotten tracks and disassemble the keyboard will have to if the performance is not fully restored.
2 Laptop keyboard repair
Removing the keyboard is the first step towards repairing it. Starting with keys, this is how most modern keyboards are understood. Take a photo of your device to remember how to assemble the laptop keyboard back.
Most often, two parts are part of any key. This is a pad and elevator keys. Sometimes the spring element makes them company.
A dental hook or tool of a similar shape is best for removing keys. A thin screwdriver is also suitable for this purpose.
On the latches, the key pad is connected to the elevator. Three to four. this is usually the number of connection points. In the case of four points, two connections will be movable. In the case of three points, such a connection will be one.
A fixed connection like the Acer Aspire E1-521 is what interests us first of all. A hook must be inserted between these fixed joints in the gap between the elevator and the platform. When you remove at least one key, you will quickly understand which side the fixed fasteners are on. Most often, they are the bottom of the key.
In the lowered and raised state, the elevator can be seen in the photographs. Attachment points to the site are clearly visible in a raised position. This applies to the lower fixed and upper movable elements.
All elevators are removed after that. There should not be anything complicated, because everything can be seen with the naked eye. Mounts in this case can also be movable or fixed as in Acer Aspire E1-571G.
There are some exceptions, but in most cases it’s easier to remove from stills. Elevators have much more freedom in modern keyboards. When folded, they can move relative to each other.
In addition, they can also be folded, that is, lower or rise. In such cases, the movable part of the elevator will extend beyond the retaining frame if it is extended to the limit. It is better to release the fixed part from the vise when the elevator is lifted up entirely.
Part of the keyboard from the aluminum substrate can be removed when all the elevators are removed. You can also remove part of the plastic board with the tracks drawn on them.
You can add the stage of intermediate removal of the plastic edging, if we are talking about older keyboards. A temperature-controlled soldering iron or a regular hairdryer will do this job perfectly.
On the back of the keyboard, the plastic needs to be straightened. To make fasteners, it is necessary to melt the fasteners. This must be done during assembly, if possible. If this does not happen, then it is enough to drop a drop of super torque or its analogs in the places of fastenings.
Most often there is no layer with spring elements in such keyboards. Separate rubber caps. this is the form in which they can be found most often.
Tracks are usually drawn on plastic boards. this is the main part of the keyboard. One of the plastic parts provides clearance, two more parts with tracks, and three more plastic parts.
As if one part to each other when connecting are two parts with tracks. They are connected along one of the edges. The connecting tracks run at the bend, as this part simply bends in half. But there are exceptions, for example, from three parts, which simply have a contact area.
Between themselves, these three parts are not glued, if we are talking about old keyboards. Only spot gluing takes place in a couple of places. This is becoming a problem on modern keyboards. You can tear off the tracks at the places where they are connected with glue, if you pull them, so you can’t just disconnect them like that.
Therefore, the layers must be separated carefully, starting from the corner of the keyboard. By the keyboard here is meant the plastic part. To do this, a scalpel or clerical knife, as well as a hairdryer, are suitable.
Blue color is most often characteristic of glue. Before dividing any area, glue it with a hairdryer. Do not rush into this matter. Then the tracks will be difficult to restore if there are a lot of them coming off. If this happened to several. it does not matter.
Finally we managed to separate the layers.
It is better to dry the keyboard and rinse it again if you saw somewhere the remnants of the liquid that was once spilled here. You should check everything with a tester, although you can just notice the tracks that were damaged.
It is not always possible to redraw all damaged areas again, although this must be done. Sometimes the tracks are just too close. The corrosion process practically stops if the keyboard is really well dried and washed.
If the measured points are far removed, then the resistance should be 0 ohms. Usually 1-2 ohms do not play a big role. Fairly high resistance or lack of ringing for a damaged track is often the norm.
Then it’s better to draw a new track on top of the one that has rotted. Directly next to the site, the site will have to be cleaned with a scalpel if the track has completely decayed up to the contact area.
Be sure to check the resistance after everything dries. The photographs show how the drawing process goes.
It should take from one to one and a half hours for the new tracks to dry completely. Only after that the plastic part is collected. After that, it is stacked on an aluminum tray.
The part with spring elements is placed on top. After that, you can connect it to the laptop by carefully laying it on it. And check if everything works as it should.
A special program for the keyboard or a regular notebook will equally well cope with the check.
You can finish collecting the keyboard if everything works fine. Just turn off the laptop and unplug the keyboard.
With key pads, there is only one caveat. Platforms are placed after the elevators are installed. A platform lowers onto the spring element in the center. After that, until the click is strictly vertically down, you must press on the site.
After assembling the laptop, the laptop keyboard repair process is complete. If you did everything neatly and slowly, then the keyboard should work without problems. Finally, do not forget about laptop keyboard cleaning. Good luck to you # 128578;