How to disassemble a Nokia N8 phone to replace the display or body. Nokia N8 won't charge

A modern person experiences discomfort if he does not have a mobile device at hand. But constant contact with technology obliges us to understand some things from scratch. This means that if you want to use modern technologies, you need to be prepared for all unforeseen situations. Devices need constant maintenance, and sometimes even repairs, which are easier to do yourself than to pay any money to fix minor problems at a service center. There is one problem that most users have already encountered - the unstable operation of the microphone that is built into the mobile phone. You may need to repair or clean the component to resolve the problem. Today we will learn how to clean and repair the microphone on your phone.

Main causes of breakdowns

There are three most common problems that can cause an audio recording device to fail. Careful consideration of each of them will help you solve the problem on your own.

Pollution

How to clean the microphone? Accumulations of dust, skin particles, and small debris can get on the sound-sensitive head of the microphone, which leads to the loss of its useful properties. To fix this, you will need to get cotton wool, an alcohol solution and a screwdriver, and you also need to know where the microphone is located on Samsung and other models:

• Disassemble the phone, or rather its case, and take out the microphone.
• Now dip the cotton wool in alcohol, the main thing is not to overdo it.
• Use gentle movements to remove any dirt from the sound head.

Important! Make sure that no cotton particles remain on the surface of the devices.

• Now wait until the alcohol has completely evaporated and return the microphone to its place, tightening all the screws firmly.

Exposure to moisture

Condensation often accumulates between the microphone gaskets and its head. The head itself is not subject to corrosion, but moisture still does its job. Again you need to disassemble the case, free the head and put it to warm up under an incandescent lamp.

Important! An ordinary table lamp will do this perfectly. If the device is equipped with gaskets, then the same actions should be carried out on them.

Broken wiring contacts

Another reason for a recording device to fail is a break in the incoming wire. There are two options for restoration work for this case: replacement and soldering. You need to choose one of them, focusing on a specific situation:

• The best option is to use a soldering iron to repair the broken wire.
• But if the wire in the headphones has breaks in several places, then it is better to replace everything right away.

How to repair a microphone? If the problems with it are more serious than those listed above, then the entire assembly should be replaced, especially if we are talking about a smartphone. But if there are serious problems with the headset, then it’s better to just buy a new one.

Diagnostics

In order to find out if the device is working, you need to get a multimeter or an analog tester that has a built-in ohmmeter. Disassemble the phone case, remove the microphone from it and test it with an ohmmeter.

Important! A working microphone should ring like a diode in one direction, and in the other, the measuring device should show about 20 kOhm. If the values ​​on the device are different from the nominal values, then the component is faulty and will need to be replaced.

Repair instructions

First you need to determine the exact cause of the breakdown, and the type of breakdown itself. The most common complaints usually occur about the following things:

• The microphone stopped working.
• The microphone sensitivity has decreased.

If you still undertake the recovery procedure yourself, then:

1. First of all, check whether the device is connected to the phone correctly. The integrity of the wire may be compromised, then you will have to use a soldering iron.
2. If the microphone does not work even after this, you should remove it from the housing and disassemble it. Check the integrity of all its contacts; you may need to bend or fix something in order to bring the device back to life.

Important! As a rule, such simple preventive work is carried out in a complex. At the same time as the microphone, other parts are also cleaned. For step-by-step instructions for doing this work yourself, read the following articles:

Replacing the microphone

In order to replace the old microphone with a new one, you need to follow the following instructions:

• Unsolder the old broken microphone using a soldering iron and a blade. If you look at the entire structure from the side, you will be able to notice the soldering of the contacts, which needs to be heated.
• Now you need to put a flat blade under the microphone, warming up all your legs. Next, we simply separate the microphone from the microcircuit without much effort.
• Inspect the microcircuit for dirt, clean it with an alcohol-containing liquid and remove the “residue” of the microphone. Now you need to prepare a platform on the chip in order to install a new microphone.
• Using a soldering iron and solder, we place the microphone on the vacant platform. If necessary, you can use old wires.
• Now you need to lightly press the audio recording device to the board and solder the wires sticking out in all directions to the contact pads.

Important! Soldering should be done quickly to avoid overheating.

• We remove excess consumables and check the device for functionality.

Important! When the inside of the device is clean and in good working order, you can pay attention to its appearance. Read about the most effective methods in the following articles:

• Block diagnostics of Nokia N8 phone

  During block diagnostics, it is determined which specific element (Case, protective glass, sensor, printed circuit board, connectors, speakers, microphone, antenna, battery) has failed.

  Algorithm for block diagnostics of a phone:

  Nokia N8 won't charge; Checking h order, if the phone charge is intact, otherwise: Let's check if it's working: If all of the above does not suit you, then you will need or.
  Nokia N8 Won't turn on or won't boot; Checking P I'll lose charge, if the phone battery is charged then: We check and see if it’s correct power button on the phone; If at this stage we haven’t found the cause of the breakdown, remember - if the phone was filled with liquid, or the phone fell and stopped turning on, it will most likely be needed.
  Nokia N8 The phone does not connect to the network or does not see the SIM card; Checking whether the phone detects another SIM card, if it detects then: Checking Phone settings, if the settings are correct then: Required.
  Nokia N8 Does not see SD card, does not detect flash drive; Checking phone flash card, if correct then: Checking flash drive connector on the phone, if it is also working, then: You need to either repair the phone's motherboard.
  Nokia N8 Does not charge via USB; Checking usb cable, if the cable is ok then: We check if it is ok then: You need or.
  Nokia N8 Not updated; Checking settings, if the settings are correct, then: Checking Internet connection, if the connection is stable, then you need a phone.
  Nokia N8 Doesn't connect to Wifi; Checking Phone settings, if the settings are correct then: Checking WiFi adapter telephone if ok required .
  Nokia N8 Can't see the computer; Checking connection cable to the computer if the cable is intact then: Checking drivers phone on the computer, if the correct drivers are installed, then: Phone required.
  Nokia N8 turns on, but there is no image on the screen or it is distorted: Checking for availability physical damage screen, if not then: Checking display cable phone, if the cable is intact, then: The phone needs repair or repair.
  The sensor on Nokia N8 stopped working: We check the integrity for damage, if it is intact then: Checking touch display cable, if intact then: Phone required, or controller repair display.
  The microphone does not work on Nokia N8; Checking Phone settings, if the settings are correct then: We check if it is intact: Let's check if it works microphone controller on the phone if it works then: Required.

• Replacing the touch glass of a Nokia N8 phone

  Changing the protective glass of the Nokia N8 phone.

  The display of the Nokia N8 mobile phone is protected from damage by a special protective glass. If glass it will crack or chip as a result of a fall, then display your phone is at risk: it may also be damaged, and the image may become “blurry” or the N8 phone will stop displaying altogether. If dust or small debris gets behind the glass, it will further damage it. Our service center specialists can replace the protective glass of your Nokia N8 phone to prevent possible .

• Nokia N8 phone screen replacement

  Display- Part screen, which shows the image and is located behind Damaged display Nokia N8 phone, be it defective pixels or blurry screen, makes it difficult or impossible to work with the Nokia N8 phone, because the image loses clarity and clarity.

  Damaged display will not “cure” over time, but maybe permanently go out at the most inopportune moment, which can cause great inconvenience. If The display on the Nokia N8 phone is faulty- You can contact our service center.

• Replacing the Nokia N8 phone connector

  Every day we listen to music on the phone, connect the charger, connect the phone to the computer, and naturally these connectors are subject to constant wear and tear, which subsequently leads to breakdowns of the Nokia N8 connectors.

  We can replace Nokia N8 connectors with the following type:

  • USB connector;
  • Charging connector;
  • Audio connector.

  How to determine that your phone connector is broken:

  • The usb connector on Nokia N8 is broken:
    • When connecting the USB cable, the computer does not detect the Nokia N8, or the connected device is not detected, or external signs of failure are visible - the core of the connector is broken, the outer part of the connector is broken. Also, when connecting another cable, the same problems occur.
  • The charger connector on Nokia N8 is broken:
    • Nokia N8 does not charge when the charger is connected, the connector is visible as broken. You can also determine that the connector is faulty by connecting another charger. If the charging connector is externally working, but the phone does not charge, then repair of the phone's system board will probably be necessary.
  • The audio jack on Nokia N8 is broken:
    • When connecting headphones there is no sound, or external damage is visible. The problem may also be in the phone settings or firmware.

  Nokia N8 phone connector repair.

  Repairing any Nokia N8 connector involves unsoldering the broken connector from the system board and replacing it with a similar new connector.

  You should not put off repairing the Nokia N8 connector until the connector finally fails, because... its use in semi-working condition may damage the elements located next to the connector, and as a result, it may be necessary to restore the board or replace adjacent elements.

We disassemble the Nokia N8 phone to replace the display or case.

Warning

This article is not a guide to action! All responsibility for collecting and disassembling your device lies with you.
Many manufacturers do not bear warranty obligations if the device has been disassembled by the user. If you do not want to lose the warranty for your device, check the terms of the warranty in the documentation or with the device manufacturer.

Tools used

First, remove the 4 screws on both sides of the phone using a TX.4 Torx screwdriver.

Now you can remove the bottom cover:

Turn the phone over and remove the battery cover by grasping it at the corner indicated by the arrow in the picture:

The phone with the battery cover removed should look like the image below. Grasp the blue plastic tab indicated by the arrow in the picture and pull out the battery.

So, you took out the battery:

Bend down the HDMI connector cover on the top of the phone. You will see a screw underneath it. Unscrew it using a TX.5 Torx screwdriver.

Slide the top cover of the phone in the direction indicated by the arrows in the picture. Insert a case removal tool or credit card into the gap between the cover and the case and pry the cover, continuing to slide in the same direction, and it will come off.

The phone with the top cover removed should look like the picture below. Remove the 4 circled screws using a TX.5 Torx screwdriver.

To remove the phone's display, pry it with a case dismantling tool or a credit card. It is attached to two latches on both sides (approximately in the middle, where the credit card points in the picture). Try to pry the display in these places. There is no need to try to pull it out from below, so as not to tear the display cables.

Bend the display by pulling it towards you and away from the phone, as shown in the picture below. You need to disconnect the two cables marked with circles. Simply pull each one up and out of the connectors.

The phone with the display removed should look like this:

Turn the display over and heat the edges with a hairdryer for about 30 seconds. Then insert the tip of the case removal tool or credit card into the gap between the display and the touchpad and run it around the perimeter of the display.

The display and touchpad will disconnect:

To separate the touchpad from the frame, heat the edges of the touchpad with a hairdryer for about a minute. Then firmly insert the case dismantling tool or credit card into the gap between the frame and the panel:

When you separate the touchpad from the frame, it should look like the image below. If you need to replace the touchpad, disassembly is complete, you don't have to read any further. Reassemble in reverse order.

So, you have removed the antenna. Now remove the 3 screws using a TX.6 Torx screwdriver (circled in the picture).

Now you can remove the system unit of the phone, as shown in the picture below. To remove the system board, lift it from right to left.

The phone with the motherboard removed should look like the picture below. Disassembly is complete.

Reassemble in reverse order.