Maintenance is difficult, so it is usually replaced directly.
Reason: For smart phones, the motherboard has high integration and high maintenance cost. Generally, replace the motherboard of the same model directly.
How to deal with the failure of Apple's mobile phone motherboard;
1. The motherboard of Apple iphone6 is broken, so many places need to change the motherboard directly. Actually, this is a misunderstanding.
The motherboard is not a whole, and there are many small chip structures, including baseband, cpu, hard disk, wifi module, touch screen ic and so on.
Generally speaking, the failure of the motherboard is rarely the overall failure, but the burning of individual chips.
Blow off the bad ones with an air gun and replace them with new ones. If the whole motherboard is replaced, it will cost two thousand three hundred. One chip is 200 yuan.
3. Apple's mobile phone motherboard is broken and may have the following symptoms: the mobile phone restarts frequently and the time is uncertain; The phone can be turned on, but the buttons are basically invalid, so it is impossible to switch the desktop; There is no sound when the mobile phone is used, and there is no sound when the headphones are plugged in.
2. What are the symptoms of Apple's mobile phone motherboard being broken?
The symptoms of Apple's mobile phone motherboard are as follows: 1, and the mobile phone restarts frequently, and the time is uncertain.
2, the phone can be turned on, but the buttons are basically invalid, so it is impossible to switch the desktop. There is no sound when the mobile phone is used, and there is no sound when the earphone is plugged in.
The mobile phone can't be turned on, and there is no response when charging with the data cable. 4. After the message is published, it always fails to be sent, even after recharging.
5, communication is always interrupted for no reason, or unable to dial. 6. The mobile phone interface is always in a mess.
7. Adjusting the volume doesn't work, or the sound is the loudest when the volume of the device is the lowest. 8. The front and rear lenses can't be opened, or blurred after opening.
9. The card doesn't respond, and the network module turns gray. Method for checking expansion data of board card: 1. Observation method: whether there is burning, scorching, foaming, board damage, socket corrosion, water inflow and other phenomena.
2. Table test method: Whether the resistance values of +5V and GND are too small (below 50 ohms). 3. Power-on inspection: For the board that is definitely broken, the voltage can be slightly increased by 0.5- 1V, and the IC on the board can be rubbed by hand after starting, so that the problematic chip is heated and thus perceived.
4. Logic pen check: check the existence and strength of the signals at the input, output and control terminals of the main suspected ic. 5. Identify the main work areas: most boards have a clear division of labor, such as: control area (CPU), clock area (crystal oscillator) (frequency division), background picture area, action area (people, aircraft), sound generation and synthesis area, etc.
Baidu Encyclopedia: Mobile phone mainboard maintenance.
3. Apple mobile phone repair point What should I do if the Apple motherboard is broken?
Apple's 6splus motherboard is broken for two reasons: the phone water burns out the screen line and the motherboard chip can't be turned on. The mobile phone does not turn on because the motherboard chip is separated from the motherboard after a light or heavy fall. But in fact, there are many chips on the motherboard, including chips responsible for power supply, display, voice, wifi network, 4G network and voice call. Each function has one or two chips to deal with. So for which fault, as long as you find the relevant management chip, you can fix it.
After the sale of apples in Qingyang District, Chengdu, the mobile phone is broken. I want to go to the Chengdu Apple after-sales repair shop for inspection and maintenance. Where is the address? -Room 23-04, 23rd Floor, Taifeng International Plaza, No.29 Renmin Middle Road, Qingyang District, Chengdu. How to detect the failure of a specific motherboard chip? This problem needs to be handed over to professional mainboard chip-level technical maintenance personnel, and the methods are as follows:
See if the startup line is abnormal: use an external power supply to supply power to the mobile phone, and use an electric meter to check whether the indicator light has changed. If there is no change, it is likely that the boot cable is broken or the boot key is in poor contact.
Abnormal battery power supply circuit: use an external interface to supply power to the mobile phone, and turn it on to see if it returns to normal. If it is normal, it is determined that the mobile phone power supply circuit is abnormal.
Abnormal power IC of mobile phone: test the test points of peripheral circuit of power IC against the circuit schematic diagram to see whether the test value is normal.
The system clock and reset of the mobile phone are abnormal: you can use the dual universal oscilloscope to detect the CPU power supply of the mobile phone to see if the waveform in the reset is correct.
There is something wrong with the logic circuit: it is the fault of the mobile phone circuit board, which can generally be solved by repair welding.
Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to fail to turn on. You can connect your mobile phone to your computer and delete programs.
To sum up: the mobile phone is flooded and does not turn on after being broken, which is mostly caused by short circuit and virtual welding between the power management chip and cpu. Except that the cpu is burnt out, other problems can be fixed. In the maintenance stage, it is best to remind engineers to detect problems such as network, telephone and camera. These problems may also lead to short circuit and failure after falling or soaking.
The two core components of Apple's mobile phone, one is the screen and the other is the main one. Board of directors. The motherboard of Apple mobile phone is equivalent to the engine of Apple mobile phone. All the operations of Apple's mobile phone are inseparable from the motherboard, such as display IC, power IC, audio IC, antenna, wifi module, Bluetooth connection, cellular data link, GPS module, acceleration sensor, ambient light sensor, distance sensor and gyroscope. Apple's mobile phone motherboard is not easy to be damaged under the protection of the mobile phone case. Apple's mobile phone fell into water.
Apple's mobile phone motherboard is broken, and there are two solutions, namely maintenance and replacement. The maintenance cost of replacing the motherboard is too high, and it is impossible to repair it before choosing to replace it. The main reason for the high cost of replacing the motherboard is that the motherboard is not as easy to copy as the screen.
Iphone LCD screen replacement, iPhone water treatment, iPhone battery replacement, iPhone without wifi, Bluetooth, iPhone without signal, iPhone crashed, iPhone failed to boot, home button failed to respond, headphones failed to sound, mute button failed, back shell replacement, battery failed to charge, unable to connect to computer, unable to read SIM card, brush machine error10/604,/kloc.
4. How can I change my Apple phone if it is broken?
If you change the motherboard, it will be 1200. Specifically, you can go to Apple for after-sales inspection or consultation. Yisheng Ningbo Service Center Tel: 0574-87006298 Address: Tianning Building 1 Floor, Zhongshan West Road 138, Ningbo, Zhejiang Tel: 0574-638 18563 Address: Room 50 1 5, Nanmen Street Central Building, Cixi, Zhejiang. -27898828 Address: No.3/KLOC-0 1904 Yaohang Street, Haishu District, Ningbo, Zhejiang Province Tel: 0574-874 18808 Address: Ningbo Branch of Hangzhou Ketai Communication Technology Service Co., Ltd., No.999 Siming Middle Road, Yinzhou District, Zhejiang Province Tel: 0574-898
5. How to determine whether the motherboard of Apple's mobile phone is broken?
If the motherboard is broken, it is a black screen. No response. 1, the motherboard is broken, which belongs to hardware damage. There are many forms of expression, from the frequent failure of mobile phones to the lack of use at all. There are many reasons. Short circuit, falling, burns, etc. The most stupid and direct way to confirm whether the motherboard is faulty is to brush the machine. If the problem cannot be solved after brushing, it is necessary to consider whether it is a motherboard problem. 2. In addition, we can also judge by function. For example, the SIM card cannot be read, the mobile phone brush cannot be started, and so on. It is impossible to replace the motherboard, even if Apple officially changed the motherboard after the sale. 3. If the mobile phone is damaged due to water ingress or falling, it may be that the pins of a component are wrongly connected, tilted or deformed, or the printed circuit inside the motherboard is broken. These conditions can be repaired independently. 4. If the motherboard is damaged because of the battery problem, it is enough to replace the battery and no maintenance is needed.
6. What should I do if the motherboard of Apple Mobile iPhone is broken?
The first method: charge iPhone with iPad charger, and the voltage is stable.
The second method: iPhone is powered off and charged faster: charging can shorten the charging time.
Turn on the flight mode to shorten the charging time: If you don't want to turn off the battery, turning on the flight mode can also speed up the charging.
Don't wait until the iPhone battery is too low to charge: Don't wait until the iPhone battery is 0 every time. Lithium batteries have no memory effect and do not need to be deliberately discharged.
It is best not to synchronize iTunes when plugging in the computer for charging: this will prolong the charging time, because the data cable will transmit data in addition to charging, and the charging efficiency will be reduced!
7.7. What should I do if the iPhone 6s motherboard is broken?
Hello, master! It can be sent to the repair shop for repair, but it is not recommended to replace it. Nowadays, Apple mobile phones are generally luxury goods, and I think so. If the maintenance cost exceeds expectations, it is recommended to replace it with a new one.
As long as you have a license, the warranty is not backed.
There is also the invoice, that is, you can do it directly without the warranty period.
When the machine passes, the after-sales store can accept the treatment.
Your mobile phone information can be found through the serial number of your mobile phone.
There are many reasons for motherboard failure, such as particle desoldering, short circuit of integrated circuit, such as moisture and so on.
If you don't think the phone has been dropped or flooded, you can replace it directly after sale. If it is a man-made problem, there is a charge. The following are the details of the charges.
The price of IPhone 6 and iPhone 6 Plus is $299 and $329 respectively, while the maintenance cost of iPhone5s/5c/5 is currently $269.
All new Apple devices include a one-year standard warranty, excluding accidental damage. Customers can purchase an additional $99 AppleCare and extend the warranty period to two years, including up to two warranty services for accidental damage during use, with a service fee of $79 each time.
If you accidentally damage the screen of iPhone 6, Apple will charge you $65,438+009 for repair (repair or replacement) if you use iPhone 6.
Plus iPhone 5s, iPhone 5c, or iPhone 5, Apple will charge 129 USD for maintenance.
In addition, Apple also mentioned that the maintenance cost of all iPhone models including iPhone 6 and iPhone 6 Plus is $79.