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Recycling mobile phone motherboard repair methods

The mobile phone motherboard is the most important part of the mobile phone, and the motherboard has a bad mobile phone, which is very demanding to repair the motherboard. Change the motherboard to 200-300 or so, 1000-2000 mobile phone, the motherboard should be about 300-500, the mobile phone of 2000 or above, the motherboard should be about 400-600. If the old recycling mobile phone motherboard is broken, it is better to throw a new machine directly. The repair is not cost-effective, and the mobile phone is getting cheaper and cheaper. 瀛越蓝图电子商行 professionally recycles electronic components .

The light of the mobile phone light can only clarify that there is no short circuit or burnout in the power supply part, but it is possible that the other chips on the main board are burnt out. Now the mobile phone generally only needs to use the cable for the screen. The cable problem will not affect the phone startup. The screen is not bright. The way to view it is to use your phone to call your phone. If the phone can illuminate, the phone is now turned on, just not lit. If there is no response, the motherboard will burn. The value of the motherboard damage repair is not small, if it is not very commemorative, advocate changing the phone.


Recycling mobile phone motherboard pad disconnection, drop point maintenance methods:

For the drop point and the lead under the pad, a hot air gun can be used (temperature: 240 ° C, air volume: blown off the spot, use a blade to carefully dig the wire head, fill a small amount of tin paste to fill the lead hole (pad), and Blow soldering to make it into a solder ball, and then use the water of the sky to clean, if the solder ball does not fall, it proves that the wire is excellently welded and can be used normally;

Regarding the condition of disconnection and dropping of the pad, first use a surgical blade to scrape off a cutting wire lead, and scrape out more than 3mm. Then use Tianna water to clean and use a soldering iron to tin the lead, and take a small section. The lacquered wire of the lacquer and bismuth tin has been placed on the scraped lead head. For a good orientation, use a hot air gun (temperature: 280 ° C, air volume: welding, after welding, leave the enamel wire with a 2 mm wire and cut it. Take a needle and place it in the center of the pad. Use another needle to touch the enameled wire to wrap around the positioned pin, form a circle at the pad, and apply a small amount of tin paste to the circle. Use a heat gun. Adding welding to dissolve it into a solder ball. If the lead wire is difficult to solder with the enameled wire, a small amount of tin paste can be applied to the welded portion, and the hot air gun is used for welding (do not touch the wire with a soldering iron), and the enamelled wire is touched with a needle. The orientation is square and the tin point is even. At this point, a pad is created.


After a cut-off point is connected, clean it with Tianshui water, and be careful not to mess up the new pad. Apply a small amount of green oil on the line except the pad. The less the better, as long as the wire is fixed. Yes, after painting, it can be re-installed in the purple light for half an hour. Even if it is repeatedly installed, it will not drop the thread.

In today's society, smartphones have become a must-have product for people. And a good-to-use smartphone needs to have a very strong processor, image processor, sound card, etc., and these hardware devices are integrated on a mobile phone motherboard, so it is necessary to have a strong mobile phone. A very good motherboard. And our recycling phone motherboard is broken in the future, it needs to be repaired. The Xiaobian gave us a description of the broken maintenance costs of the mobile phone motherboard, and I hope to provide assistance to mobile phone users.


The gathering of this kind of competition method also makes it more difficult for manufacturers to be more sophisticated in the process of differentiation. This also requires manufacturers to further promote technology development, compete for a substantial distance in the differentiation, preemptive opponents, in order to take the lead in more intense competition.

The crystal oscillator is a kind of control frequency component, and the frequency pulse signal source is supplied in the circuit module. During the transmission of the signal source, the crystal oscillator announces the instruction under the cooperation of the circuit, and cooperates with other components. In a nutshell, the role of a quartz crystal oscillator is to supply a stable vibration (pulse) signal of a certain frequency to the circuit.

It is mentioned that the mobile phone has to mention the important components inside it, such as the quartz crystal in the electronic components. The type of crystal oscillator that will be used in a mobile phone is not less than one computer display screen. So which crystal oscillators will be used in mobile phones? What is the role of crystal oscillator in mobile phones?

The crystal oscillator used in a mobile phone has at least 3 crystal oscillators of different package sizes. It is said that there are 5 or 6 crystal oscillators on the mobile phone motherboard. The cylindrical insert quartz crystal has a frequency of 32.768K, and it is the function of the wall clock in the mobile phone. The recycling of the mobile phone motherboard will also use the 3225 package crystal 26M frequency, and complete the USB interface function to complete the fast data transmission 49S package 12M crystal frequency and so on.


瀛越蓝图电子商行 professional recycling mobile phone camera , we look forward to your contact and will be happy to help you.

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