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قديم 29-03-2009, 03:28 NOOOOR غير متواجد حالياً
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افتراضي Record of welding repair Compaq BGA

Although HP and Compaq merger for some time* but still in the market can be seen on COMPAQ M series notebook* such as such as M300 M700. And 2 hand notebook prices rose more than many. M300 once early in 2004 sold at 3800 yuan price* and Out-of-stock situation arise. M300 P3 600 is now also only sell second-hand notebook 2*500 yuan.



That day just to have a friend to sell second-hand laptop used a old COMPAQ PRESARIO 1920P2 come to repair laptop (P2 300 motherboard comes with 64MB 800 * 600 13.3TFT 4G hard drive).
Question of fault is not hard to identify* through easy to use hair dryer after treatment* and sometimes can detect the hard drive* looking for our help BGA soldering. I got books Can not boot after notebook found* initially there is possible to determine the two possible
1: In the process of using hair dryer put South winds bad (some non-constant temperature of the hair dryer will be a sudden temperature increase or decrease of the chip has a certain impact);
Two: the human body will be put on-chip electrostatic damaged. Put us down and then look at the motherboard inside the structure and where the point of failure.

Keyboard at the bottom of the first two have relatively small plastic plastic cover fixed keyboard* simply push the keyboard instrument can be removed easily. In fact* many notebooks are also fixed by these plastic plastic keyboard* but there are still a few screws are generally used at the back of books have 2-3 screw fixation* so the general user's own keyboard split keyboard books to be careful to see whether there is or plastic screw plastic fixed.
After opening the keyboard* we can see the lower right corner of the memory has an empty slot* we have seen most of the memory slots at the back of the notebook ? Notebook at the other side of the screen to see the U.S. Whether or not the connection line and the general location of the screen is different from the majority of the screen notebook line junction on the main board are received* but this notebook is also on the original motherboard add a line boards* integrated circuit board showing the conversion chip (graphics chip output voltage resulting in this group of 4 synchronous output signal displayed on color LCD screen role since) We are together every day over LCD screen* over time the board will Since the problem of vibration loosening it? Or design on this point is the lack of it! Will not be anything but perfect.





Guess what this is everyone! INTEL P2 300CPU and the CPU is a special trust everyone because they have not read it! The unique design of the seal around the metal plates and metal plates on the motherboard connected to the heat played a very important* but what CPU upgrades more difficult on the market extremely rare.



Watch fans have been modified to give them the use of power after the input transformer diode voltage 3-5V cathode connected to the fans negative ground* fans will be modified at boot off of the moment after the cessation of rotation until the rotation will not Since death caused by heat problem (but I do not recommend everyone here to do so* such a chip on the motherboard voltage output on impact* greatly reducing the life and performance of chips* but also to control the output of the chip must have the effect of may have serious cause other problems).
So notebook users have encountered problems right selection should be carefully considered so as not to lose the greater Detect repair station. Power plate inserted needle and connected to the motherboard* other laptop most of the power supply board on the main board integrated in the notebook* so this book really have a lot of hidden ah!



Below the main board there is a small board* two rows of small fine needle and connected to the motherboard* the battery port* hard drive port* CMOS* the main power supply chips are integrated in the above so a needle is likely to break all the devices are few* so I repeatedly reminded readers: No special training through the best not to split private notebook* because it is small things that will affect the whole performance.
(FW82371EB) The book then take a look at our part of the chip* although P2 are the same but the South Bridge (FW82371EB) North Bridge (FW82443BX) and graphics (MAGICMEDIA256AV) are BGA welding* but the PC card slot for the control chip is pin welding* In fact* P2 to P3 have the time to do a lot of paving the way! I believe a lot of people use the notebook all know COMPAQ outstanding sound quality* in particular the special effects are good high bass in the spare time to hear the beautiful melody of the song is a true enjoyment of good ah! NEOMAGIC MAGICMEDIA3DX, However* the use of the audio chip and did not distinguish between all the other notebooks are used NEOMAGIC MAGICMEDIA3DX* it should be noted that the speakers are at the quality of COMPAQ to do a lot!


As I said* the South may have a bad blow to the hair dryer* only after careful observation have been found in the lower right corner of the South Bridge has charred traces of charred traces of this man-made damage are sure! Some of the internal computer people are not familiar with the principle that heating hair dryer can be used to make beads BGA solder internal situation of the excluded* but they did not expect the chip to control the temperature of the heat instead of blowing the bad chip to just say that in fact the fault BGA is a are like as long as the re-BGA welding of a single fault can be ruled out* but now can only get back the original burned Nanqiao Model (FW82371EB) to be settled (on the motherboard chips for each model are not the same* the replacement must be find the same type of pin can be used)

Detect a simple repair process have thus concluded* although it is easy but engineers spent one afternoon to complete BGA welding* the process of welding at what we know to pay us how much time and effort to fix this book it? Although it is early now to backward PII notebook* but when once again the masters of this notebook to see the familiar screen boot COMPAQ* the mind will be how happy?
I believe most people have this concept* anything the price of its own existence* largely depends on how you go as far as possible to play its role* imagine the mountains of poverty or not have the chance to see or use of this high-tech mobile products that we Why waste for hundreds of digital block on this product?



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التعديل الأخير تم بواسطة:: NOOOOR ; 27-05-2011 الساعة 07:25.
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الساعة معتمدة بتوقيت القاهرة (جرينتش +2 ). الساعة الآن 20:38

شركة رؤيــــــــــــــة لــصيانة الهاردوير ودورات الصيانة المتقدمة
متخصصون في صيانة و إستعادة البيانات من الهاردديسك
كورسات احترافية (هارديسك-لاب توب-مازربورد-داتا ريكفري)

المنصورة شارع المستشفي العام
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