In this photo slide, we will present you the latest Samsung mobile phone seen from our corner. This is an attempt to bring the phone to the perspective of a service technician to clearly outline the layout of most parts. We are aiming to bring this phone closer to mobile device service providers and to point them to the order of operations when disassembling and assembling the phone as well as displaying new original parts for repair. We insist on the use of original parts. Only by using such parts and in the prescribed conditions of servicing can guarantee the correct operation of both parts which are replaced and the device. It is our aim to direct this service to beginners in servicing in the right direction, as well as to tell experienced repairers about possible omissions or defects in the part replacement process.
In the first few photographs, we show a phone that has physical damage to the "touch panel" or "glass" as it is usually called by users. After the fall of the phone on a hard surface, the glass breaks. In this case, the manufacturer has anticipated the replacement of a complete module that constitutes a metal housing complete with an LCD display and glass that is damaged.
As previously stated, Samsung has provided for its service procedures to replace the damaged LCD display with a new one that comes with the enclosure, as well as batteries and a set of adhesive tape so that the phone can be brought back to the original condition and replaced by the IP68 standard (picture below )
The image below shows the look of the new LCD display that was shipped in the service pack.
The following figure shows the appearance of the open Note 9 phone. If you take a closer look at the photo, you will see that the last part of the mask is separated without damage or traces of opening as well as the interior of the device. We insist on complying with the service procedures provided by the manufacturer and using the appropriate professional tool to repair the phone. The user's satisfaction was completed in a quality manner and the phone would be returned to the user in the same condition as before the damage.
Phone appearance after unscrewing all the screws and removing the antenna from the back (picture below)
The figure below shows a Note 9 whose parts are removed from the inside of the enclosure. The LCD which in this case is intended for replacement is now released from the carrying parts that need to be returned to the inside of the new LCD. When removing the base board, it is necessary to remove the SIM carrier and memory cards, disconnect the connectors of all peripheral parts from the board as well as disconnect the remaining screws (head set connector, USB connector module and base board). Special mention should be made to everyone to pay attention when removing the battery. The battery is extremely sensitive to increased temperature and to sharp edges of the tool. When separating the battery from the bay, combine a slightly elevated temperature (80 degrees Celsius for up to 10 minutes), isopropyl alcohol and a sharp-edged tool (you can also use a vacuum rubber). In the event of damage to the battery, a flame might ignite! Please note that the ignited Li-Ion batteries can not be extinguished. Fire can only be eased by inserting a lit part into the sandbox. Therefore, pay special attention to this part of the repair so as not to hurt yourself.
On this occasion, we will not deal with the architecture of the base board. We will show you from several angles in the picture below.
Next we present the look of the new LCD display, a set of adhesive tape and a new battery, as well as the rest of the phone parts. By completing all of these parts we get a repaired Note 9.
The order of returning parts when making the phone would be as follows:
1. Removing all protective foil from the inside of the new phone's case
2. Removing the module with the USB connector and microphone into the bay and returning both screws
3. Removing the head set connector into the bay and returning the screw
4. Removing the module with the sensors
5. Removing the base plate
6. Taking both front cameras
7. Connection of all connectors of peripheral parts and Lcd to the base plate
8. Removing the battery into the tray and connecting the battery connector to the base plate
9. Setting up all the antenna modules and restoring all screws in the order specified in the service instructions as well as tightening each of them by the specified torque tensile torque
10. Return the pen to the phone's housing duct
Practice has shown that it is advised to test the phone before placing the adhesive tape and closing it. To avoid reopening the phone, if you notice a defect in operation, we recommend testing, after which you can access the adhesive tape on the back of the phone and the inside of the back masks (battery cover) with pre-removing the remnants of old adhesive tape. The surfaces to which the new adhesive tape is applied must be clean and dry.
When the foil is removed from the adhesive tape, the back of the mask is placed on the back of the phone, which closes the phone.
In the next few pictures, we see how the repaired Note 9 phone looks like.
It is advised to do another short test of the phone after closing it by entering the test menu * # 0 * # If the phone has successfully passed the test it is finally closed under pressure in the mold and presses, the last version of the software is entered, the calibration of the panel points and batteries, the water resistance test is done ...
If the phone has passed all these tests, it is ready to return to the user.