Broken Samsung Note 8 Glass Screen Refurbishing Guide

The era of the curved screen has arrived since the release of Samsung S6 Edge. After years of development, a brand new curved full screen has been adopted, which comes as a combination of curved screens and full screens. Compared with curved screens, the new curved full screen undoubtedly bears a much higher repair/refurbishing cost. In our video today, we will take Samsung Galaxy Note 8  as an example and show you the latest curved full-screen refurbishing technology. Our REWA is willing to share repair tips with you and helping to solve your issues. Now, following REWA to restore your broken  Samsung Note 8 glass screen to a new condition.

 

The above is the complete process of Samsung Galaxy Note 8 broken screen glass repair. Have you got it? If NOT, watch the video below. Meanwhile, have you met any problem during the crack screen refurbishing? If YES, welcome to share with us at comment below or ask forum. Our REWA is willing to share repair tips with you and helping to solve your issues. As an old saying “ if three walks together, one can be my teacher”. We can learn from each other.

Fix Samsung S7 edge Won't Turn on - Chip Level Repair Tutorial

“Oh, my Samsung Galaxy S7 Edge won’t turn on!” Yes, we know and understand how annoying it can be when your phone remains frozen at the black screen almost like a dead wood. It is not easy to deal with an unresponsive phone, especially when it does not even turn on no matter how many times you try. However, you are not the only one whose Galaxy S7 edge won’t power on. There are many like you facing a similar fault. Since it is a common problem. You can find and try some basic ways from Google, such as check the power button whether it damage, perform factory reset and etc. Such those basic methods we have mentioned in How to Fix Samsung Galaxy S8 Plus Not Charging and How to fix Samsung Galaxy S8 speaker sound not working. You can take a look.

 

However, there can be various other reasons due to that Samsung Galaxy S7 edge won’t turn on. As for won’t power on accompanied with 50mA-80mA boot current, the first thing we do is to check power supply voltage. If nothing goes wrong, the fault is most likely to be related to CPU. If there is abnormal voltage measured, then check corresponding faulty position on the board. The fault component is finally confirmed as PMIC U7003, our focus today would be to fix this issue. We can fix the issue by replacing with a new PMIC(You can read our another about PMIC Replace Case- iPhone 6 Won’t Turn On Repair – PMIC Grinding and Replacing). Now, follow the instructions given below:

This tutorial offers by REWA Blog, more about the information about fixing Samsung Galaxy S7 Edge won't power on please go to their website.

iPhone 6 Plus Touch Screen Not Working Repair Tutorial

Did you get your iPhone 6 / 6 plus touch screen unresponsive? Many people feel so annoyed when their iPhone touch screen cannot work, especially in the moment of fierce urgency.  In this video we give you the solution to fix the iPhone touch unresponsive problem that only by replacing the touch IC.

iPhone 6 Plus Touch Screen Not Working - Touch IC Replacement

Note: This tutorial offer by REWA Technology, visit blog.rewatechnology.com to learn more repair tips.

iTunes Error Codes of iPhone 6/ 6 Plus

iTunes error codes are very common and it may pop up when you try to restore your phone or update to the new system. Almost every repairman has encountered a variety of error codes during the iPhone repair, and usually a seasoned technician knows what each restore error code stands for, so they can trouble shoot the malfunction of customers’ iPhone accurately and efficiently. REWA LAB has summarized daily repair experiences to share with you the common error codes of iPhone 6 / 6 Plus and how to trouble shoot and solve related problems.

Before seeking for logic board solution, you can rule out some basic causes first.

1. Update iTunes to the latest version.
2. Update your computer to the latest OS.
3. Restart your computer and soft reset your iOS device.
4. Unplug and plug in your iOS device to try again.

If you have done all the above basic operations and the problem remains the same, you can follow the guide to troubleshoot the problem. However, in some cases, there are many reasons may lead to one error, and the error code may have different meanings in different iOS models. Therefore, it is of vital importance to diagnose the problem combining the popping error code with an actual situation. Below is the common error codes of iPhone 6/6 plus for your reference.

Error Code 1

Baseband CPU, Baseband PMU, 19.2MHz Clock signal.

Check if condition of voltage outputted from Baseband PMU, if there is no voltage outputted, please check if the Baseband PMU or Baseband CPU is pseudo soldered or damaged.                                                                                                                                                                                                                                                                                                                      Error Code -1

EPROM

Check if the EPROM is pseudo soldered or damaged.

Error Code 56

NFC circuit, the Rear camera circuit

1. Check the condition of rear camera, the malfunction of rear camera and related circuit could cause error code 56.
2. Check if the NFC IC is pseudo soldered or damaged.

Error Code 4013, 4014

CPU

1. Check the condition of CPU power supply or components on power supply rails.
2. Check if the CPU is pseudo soldered or damaged.

Error Code 9, 14, 40, 2009, 4005

NAND flash

1. Check whether the NAND flash chip is pseudo soldered or damaged by measuring related resistance.

2. Replace the NAND flash chip.

Error Code 2005

Battery, Voltage supply

1. Replace with anew battery to exclude the external malfunction factor.

2. Check the circuits related to battery connector.

Error Code 3194

Network, USB cable, Charging port connector

1. Confirm whether your device is connected to internet.

2. Check the condition of USB cable.

3. Check if the charging port connector is pseudo soldered or damaged.

The guide is hard to understand? We have video tutorial for you. Go to REWA Blog or REWA official Youtube channel to watch.

How can I recover the data from my dead iPhone 6S?

A faulty or dead iPhone is a disaster for many people, however losing all the photos and data of your phone without any backup seems to be an even greater disaster. iPhone data recovery thus becomes very important in cell phone repair industry. We are going to show you how to recover the losing data from a dead phone.

Connect the battery connector with DC Power Supply, and press the power button to power on, there is no response from the screen.

However, current reading on the ammeter is normal, which indicates that the phone is turning on yet with black screen.

Our initial judgment is that the display circuit might have been damaged, and we need to check LCD/Digitizer Connector J4200. Run diode mode measurement of pins relevant to display on J4200. The measured value of Pin 33 is lower than normal value, which is abnormal.

Pin 33 is the reset signal pin for display circuit, the reset signal sent out by Pin J3 on CPU reaches Pin 33 via FL4221, C4221 and C4220. Our next move is to detach FL4221, C4221 and C4220 for further measurement.
First, remove sponge around the connector with tweezers.

Then stick High Temperature Protective Tape on connectors around.

Heat with Hot Air Gun at 330℃, air flow 1, detach FL4221, C4221 and C4220 from the board.

Then tear off the High Temperature Protective Tape and run diode mode measurement of the two pins on FL4221. The measured value of Pin 2 is abnormal.

Since Pin 2 is connected directly to CPU, we can confirm now that CPU has been damaged. As we all know, a damaged CPU can not be replaced separately. And therefore the 1.8V AP_TO_LCM_RESET signal cannot be supplied. To avoid data loss, we can recover data by voltage borrowing.

Choose an 1.8V voltage point nearby, For example, C4118 for our course today, which is the 1.8V voltage point of BUTTON_MENU_KEY_L.
First, remove sponge around with tweezers.

Then heat with Hot Air Gun at 270℃ to remove black adhesive.
Run voltage mode measurement of C4118, the measured value is 1.8V, which is perfect for all operation.

Apply some Paste Flux to FL4221 bonding pad, the remove tins on the pad with Soldering Iron at 350℃, prepare a length of tin applied Enameled Copper Wire of 0.1mm in diameter, heat with Soldering Iron at 350℃. With one end of the wire soldered to C4118, solder the other end to Pin 1 of FL4221. Once done, clean with PCB Cleaner.

Now we can assemble the phone and test, Connect the battery connector with DC Power Supply and press power button to power on.The phone turns on normally.

Connect the phone to computer with a digital cable, launch the iPhone Data Recovery software iTools.

Go to Toolbox>Phone Transfer, choose ’Restore backup’, and click on ’Backup’ to start the Backup process. Once finished, save all the recovered data on the computer.

Tips: make sure that the screen stays on during the data recovery process, otherwise the data recovery might fail. Also, this works for data recovery only, the phone is still not prepared enough for normal use. iPhone 6s data recovery from dead board completed successfully.

It is a special case for the iPhone 6S data recovery, if you use others iPhone devices and want to recover the date what you lost, REWA will be your best choice. More info please go to blog.rewatechnology.com

Maybe you need a new battery for your phone

Have you met this situation that the battery power becomes less after charged one hour? This is something quite a few users complained about. While you may think that have to replace a new battery, that usually isn’t the case. So, what is causing this problem? Maybe the charging port is full of dirt or the cables may be damaged. Also, a software or hardware issue can cause this problem.  Those signs that your iPhone need a new battery.

Sometime it is the hardware issue, you can find a tutorial from iPhone 6 not charging with logic board repair.

The likelihood of your cell phone’s performance will not stay at one hundred percent forever. Your cell phone is likely to give a little more trouble, slow down or lose charge quickly as time goes by. The problems you may be experiencing with your phone may be caused by various things, including the need for a new battery for your phone.

There are various signs that can tell you if your phone needs to get a new battery. You can tell that your battery needs changing if…

1. Your phone is dead: We mean completely and permanently dead. We mean that it just isn’t charging or able to come on. When there are no signs of power or life in the phone, even after it has been charged with a good chargers, you may just need to get a new battery.

2. Your phone only shows power when it’s on the charger or it doesn’t power on after it has been given ample time to charge up: This means that your battery does not hold the energy that it gets from the power source. If this is the case with your battery, you need a new one.

3. Your phone dies quickly: If you’re not playing games, listening to music surfing the web, using Bluetooth or doing something else that may be causing your battery to die. However, a battery that dies very quickly after it has been fully charged, may also be a classic sign that you need a new battery.

4. Your battery or phone starts getting very hot: It is actually quite normal for batteries to generate heat when charging, but their heat is internalized. Batteries that need to be changed, are those that generate or cause the phone to generate external heat.

5. Your battery bulges: The bulge in a battery means that the internal cells have ruptured and that simply means that the battery needs to be changed.

How to fix iPhone 6 not charging

Have you met after charged one hour, but the battery power becomes less? This is something quite a few users complained about. While you may think that you need a new battery, that usually isn’t the case. So, what is causing this problem? Maybe the charging port is full of dirt or the cables may be damaged. Also, a software or hardware issue can cause this problem. Now, we have listed four common ways and a professional solution for iPhone 6 won't charge. As following.
Restart iPhone
For most non-professionals, the most common fix for issues on any computer/phone has always been to restart the device. Sometimes a program can be stuck or could be causing another issue or bug and cause kinds of types of frustration and confusion. Try restarting your iPhone first before going on to more intensive fixes.

Update iOS
When you upgrade your device, the issue will probably be gone. So if there is upgrade software, make sure you have been got. Come with following to do this.
1. Go to Settings
2.Tap General
3.Tap Software Update
4.Tap Download and Install
Clean the iPhone’s charging port
If there are any obstructions, the cable won’t be properly placed into the charging port, thus, the device won’t charge. In this case, you need to clean the charging port. In order to do this, you will need some suitable tools, such as a toothpick or a small needle. Remove all the obstructions, but make sure to do it carefully to avoid any damage.

Try another charging and USB port
If clean the charging port still no solved the issue, then try another wall charger or use another USB cable. Plug the cable into the USB port on your computer. Maybe that will make a difference.
With these ways to fix iPhone 6 won’t charge, you will probably solve the issue. If not, then it may be a hardware issue. Let’s follow REWA step by step video recording to fix iPhone 6 not charging with logic board.
Charging fault analysis
Plug dongle to a computer, open PCB diagram software, Charging voltage input PP5V0_USB, battery voitage PP_BATT_VCC, Battery electric quantity dectection BATTERY_SWI_CONN
Connect U1401, Tigris charger, USB control IC, overvoltage protection signal, U1700 damage can result in not charging, reboot and connect computer failure ect.

Charging fault detection
Open iPhone 6 screen, take down the screen, pull up the battery connector from logic board. The coltage is about 2.0V after measurement through stitch battery is ok.

Plug to charger, the voltage is 0.5V(normal 1.8V – 4.2V) after measurement through FPC connector, the logic board can’t charge.
Repair:
Take out the logic board, fix the logic board with PCB holder. Blow the shield cover with 320℃ air hot gun and take off it.

After blowing for 1 minute at 240℃, scrape off the black ashesive.

Blow the Bonding Pad for 1 minute at 300℃ until the tin melts.
Pry the chip with sculpture knife, apply some Paste Flux, remove the tin on bonding pad, apply some rosin on the Solder Wick and slick Bonding Pad.

Clean the Bonding Pad with PCB Cleaner, align the new chip in right direction through stitch.

Blow the chip with hot gun for 1 minute at 280℃. Install the logic board after cool down
Detection and Troubleshoot
Plug to charge, the voltage ranges between 1.8V and 4.2V indicating charging IC works properly, install the LCD and charge, after 1 hour the battery can charge properly.

Make sure you bookmark this page so it will be easier for you to find it in the future when you need help. If you are interested in the tools used in the article please go to REWA Product page to order, also you can watch the video via their blog and then fix your iPhone 6 by DIY. Anyway, good luck your new iPhone device.