Thursday, August 4, 2011

Laptop LCD screen repair broken cable


Laptops Tablet because of its unique characteristics of the movement, known as "mobile office", the buyers few, a variety of reasons, appear in the course of this failure is often as strange things, many of his friends see the beloved "books" appear a little problem to lose control, and often anxious, confused, and most have used the Internet to find answers, but experts in online forums laptop mostly generalities, or direct that repair, and other case to specific operational problems have our own hands, do not have the practical ability of the "books" owner or service center to go to, to spend a large amount of money wasted.
I would like to break through concrete examples of many "books" owner is very mysterious that such high-tech ideas. Notebook PCs integration is relatively high, compact, lightweight, high-tech, many people think that is a problem only to the repair center to go, no other way, in fact, the service center staff to deal with problems sometimes and we are very much the same way you DIY enthusiasts, the general problem we can fix themselves. So, please bear in mind the majority of notebook computer enthusiasts, once your laptop problem, we first have to calm, to know how to analyze the reasons, do not rush to give service center, might also be able to find our own fault lies, in fact problem as long as a bit of ability are capable of solving their own, so why spend a lot of money ran up tens of miles way, or even Barry Road to the special service center?
My colleagues, a laptop computer (hand, in his hands have been playing more than a year), Hengsheng, model SLIMNOTE 7100, is the Asus OEM product, its configuration is: CPU PII400, memory 64M, IBM hard disk 6.4G, 11.3 inch color LCD TFT, external soft light.
Once in use the normal shutdown, wait until the next boot use, the screen appeared a large number of vertical stripes, making the display of the content of incomplete, because it is second-hand goods, there are not any warranty to talk about, said maintenance Tai Yuen cost approximately a few hundred friends, anxious and a bit reluctant. I have not found a way to see (and later heard that the mood is holding try to come to me). I heard him say this, there are a few hearts, the likelihood is the monitor cable to connect the motherboard there is the phenomenon of fracture, because about two years ago, my laptop, there have been similar failures, I lie In the above a week before a full repair to find faults where range. Of course, the causes can produce such a card may be the reason, but for laptops such sophisticated equipment, its CPU, memory, hard drives, graphics cards and other hardware in general is not damaged, like him Most of the LCD screen of flip back and forth led to the local cable break. So I boldly said to friends, including my body, and worry.
After I get the machine to do routine checks, indeed, as a friend said, incomplete display screen covered with vertical stripes, but start operating normally. As I accidentally closed the little LCD screen, the display screen suddenly changed for the better, no different to normal! Then back to the original point of view, when they die. Under the more determined I am pleased the judge is correct, the LCD screen and motherboard cable connection between the existence of the phenomenon of fracture, in my LCD screen when active and connected to the break point.
Since the problem identified, then started working on repairs. Some friends to find a place to break it Jie Shangqu not to all? Yes, I think so, but find the cable to break the office is not an easy thing, is to find a breaking point, it is even harder to pick up! Fortunately, my laptop two years ago, when maintenance has accumulated some experience then cable, now you can finally dedicate with a.


Prior to this, first call us to learn what kinds of cables, be aware of.
Books of the working status dashboard cable
The so-called cable, by definition, is to a lot of wires neatly arranged side by side together, play a role in transmission of data signals, while using cable also enables the circuit to look clean and beautiful. Believed to play "books," the lovers played most of the desktop, the cable structure and desktop hard drives, CD-ROM, floppy and other data in the same line, but cable is very high toughness of plastic film sandwiched the root of a number composed of thin metal, and hard drive data cable up even more than the light, but with antique books or under this figure.
Early use of single-strand wire
In general, the cable has high toughness, not easily broken, but because it is second-hand machinery, has been used for several years, the LCD screen open and close do not know how many times, coupled with incorrect use, frequent back and forth activity in the same direction, then it is possible LCD screen off, if you break one, there are two pick up the possibility of off too much, to the point where we can not accept only a replacement of, and has been used for some years second-hand laptop, its accessories are not already produced, in order to buy the same type of cable have been unlikely. In fact, the laptop cable, there are two, one is from the screen, leading to the graphics part of the cable, a screen control circuit from the cable leading to the TFT panel, which shows two transmission line plays the role of content , the difference is that access from the screen is the graphics part of the cable to transfer the entire screen display signal to the control circuit after the signal is divided into each pixel to display the content in mass to the TFT panel. If any one of the cable problem, it will not display properly.
Understand the structure of the cable after the next step is to open the laptop, find the location of the cable. Tools ready: electric iron (high-quality solder wire, rosin, etc.), digital multimeter, art blade, 703 or 704 silicone rubber (sealing the mouth of the things line output voltage, appliance repair department can be found) and so on.

Tools:
Laptop, LCD screen, cable, broken, repair - broken laptop LCD screen cable repair
All major brands of laptop cable color, shape may not be the same, but the structure is certainly the same. LCD flat cable connection to the motherboard most of the LCD screen below, we have to first open the laptop to see the cable. Different brands and models of laptop disassembly methods are similar, you can first look to see notebook case is composed of several integral part. In general, go first to a soft cloth pad on the table, so that the notebook upside down, remove the screws to the bottom of a few, and then provide notebook-side up, open the LCD screen, this time we will be able to "books "remove the front panel and keyboard, note that the front panel with the mouse and speakers, most of them and the board is between the cable with a plug to connect the keyboard is no exception. First carefully plug the other end of the cable from the motherboard carefully to win, respectively, in order to remove the front panel and keyboard.
At this time we can see the "books" of the board, from the motherboard to the LCD screen cable usually has two, that one of the most wide (about 4 cm wide) is the transmission of data signal cable is that it have broken the place! Another root is the LCD backlight use. Some laptop motherboard to the LCD cable is one, only the LCD backlight control signal and a cable transmission signal with nothing. As long as the two cables were pulled to the top, after moving Larsson, grasped the side pull up the bottom side of the interface cable can be pulled out.
After finding the cable, but how can confirm which parts of it broken? First, use the observation, first with the naked eye to see where the cable which has obvious crease, disconnect all cables caused by the crease. Can make use of high-powered magnifying glass in the light of the auxiliary observation, because the cable is thin, broken parts should be able to see out.
After finding doubt, to be sure, we re-use digital multimeter further "confirmed." Ordinary table pen will not do too coarse, and we were on the table pen needle connected with a 200 ohm resistance profile, the table just wonder off point pen on both sides of the table with a needle instead of pen gently cut open the ribbon cable That layer of thin-film measurements with toughness, resistance shows that infinity is certainly broken here, after the break to find, we use resilient blade gently to scrape that layer of film, this step must be careful, because the cable it is too thin, too thin, not to then fine cable Guaduan, and more can not come out of its hole in the row line scraping to expose the metallic luster prevail.

After scraping a good ready to weld, with a blade scraping rosin powder on just a little scratch of the row line (flux used), and other electric iron pan, and the cabinet, unplug the soldering iron (this step must be to do otherwise is static to the motherboard burned out can not find me ah!), the use of waste heat, the tip slightly moistened with a little solder, fast rosin powder sprinkled in the cable to wipe the place, then the vertical lift, cable where it was welded off well, remember, the speed must be fast, otherwise the cable was ruined, and if you can not do it again for more than a few times, best to find a scrap of the player or cell phone cable Enhancing the first and then hands-on welding technology.

After the weld is good, accurate digital multimeter with a silicone rubber pad on the 703 and around and back are coated with a layer of about one to two hours after the air-dry until the surface of the natural re-coated 1-2 times repeated, using 703 silicon Rubber dries flexible features to play the role of fixed joints, so that it will not use again after disconnecting.

Wait until completely dry silicone rubber can be installed after the test. This step I would not say more, entirely in accordance with the reverse order of disassembly just installed, it is tough for a long time, the test results of their work, I believe you just follow the steps I have described to do, and some will be successful.

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