MacBook won't turn on repair tutorial

For repair technicians, their repair work usually goes differently, since the problem can be fixed and solutions may be flexible. For our MacBook Air won't turn on repair case today, in order to demonstrate a complete repair process, we started from main power supply inductor in this video. The fault is finally confirmed as to be caused by fuse damage due to short-circuited capacitor on the main power supply circuit. Actually, you can find the problem directly based on experience if you are an old hand. REWA never lets you down and always has an EFI chip solution for MacBook unlock repair for you.
Now, check our video for more detail about MacBook Air Won't Power On

Attaching the list of the tools used in the video. Welcome customers in need of inquiries. We will help you with whatever you need.
*Hot Air Gun Rework Station
*Soldering Iron Rework Station
*Digital Multimeter
*DC Regulated Power Supply
*Straight Tweezer
*Paste Flux
*Solder Wire
*PCB Cleaner
*Anti-static Plastic Pry Bar
*Soft Brush
More the repair tutorial about MacBook, please check the following to see

• How To Unlock MacBook By Removing EFI Password?
• How To Upgrade RAM On MacBook Air?
• 5 Minutes Done – MacBook No Display Repair
• How To Fix MacBook Pro Won’t Turn On

iPhone X Face ID not working after change screen repair tutorial

Note: This iPhone X Face ID not working after change screen repair tutorial offer by REWA. You can go to their website blog.rewatechnology.com to watch the video.

Recently we got many messages about face ID not available after screen replacement from our clients, which surprised our technicians greatly. Since the screen replacing would not affect face ID function at all according to our practical verification. However, REWA LAB has done some further researches and will share you the detailed analysis and solution for face ID failure caused by damage of flex cable after repair here.
How does face ID work?
First, let’s understand how face ID works. The whole functional area is dubbed the “TrueDepth camera system”, which is made up of flood illuminator, infrared camera, front camera, dot projector, proximity sensor, ambient light sensor, speaker and microphone. Every time you glance at your iPhone X, the flood illuminator detects your face with infrared light and forms an image. Then the dot projector will project out over 30,000 invisible infrared dots over your face to create a 3D map. Last, the infrared camera reads this map and sends the data to neural networks to create a mathematical model of your face. Your iPhone X will check that mathematical model against the one that you’ve set up and stored on your device to see if it’s a match, and if it is, it will unlock your phone.

How do we repair?
According to the description, this iPhone X was dropped once. However, the face ID is in normal status. It fails to work until a replacement of screen assembly. With all the knowledge, we begin our repair.
Power on the phone and it shows “unable to activate Face ID on this iPhone”. So we resort to resetting face ID. Go to Settings > Face ID & Passcode > Reset Face ID. We get the message “Face ID is Not Available, try setting up Face ID later”. Our initial judgment is that the unavailable Face ID might be caused by misoperation in the screen replacing process. Therefore, next thing we do is to check flex cables that are related to Face ID.

Disassemble the phone. And check the Infrared camera and dot projector module under Microscope first. Nothing goes wrong. Then move to the Flood illuminator module on the earpiece speaker assembly. Check the connector and flex cables carefully. Still, nothing goes wrong.

Then remove screws. And detach the earpiece speaker and front sensor assembly from the phone. Be careful not to damage flex cables in the process since the Flood illuminator module is bonded to glass lens with double-sided tape. We can see clearly that the flex cable where locates the Flood illuminator module is fractured at the edge.

Since the Flood illuminator module is an essential part for Face ID circuit, damage of the flex cable can result in not working of it, which can absolutely affect normal working of Face ID. Also, as flex cable repair is difficult, we can solder the Flood illuminator module to a new flex cable. To replace with a new flex cable, we need to separate the earpiece speaker and the ambient light sensor module from the earpiece speaker and front sensor assembly first. Heating with Soldering Iron, the ear speaker was separated successfully. Then, secure the flex cable in the place with High-Temperature Protective Tape for further separating the ambient light sensor module flex cable. Soldering Iron and Hot Air Gun are required to remove this flex cable. Once done, remove excess tins on the flex cable with Soldering Iron and clean with PCB Cleaner.
Now the fractured flex cable is separated completely. Next thing we do is to replace with a new flex cable. Remove the Flood illuminator module on the flex cable first. Prepare a new flex cable. Apply some Paste Flux to the bonding pad. Align the Flood illuminator module in place with the new flex cable. Be careful with the direction. Then solder with Hot Air Gun. Remove residual glue on the module afterward.

The repair part is almost over right the moment. Next thing we need to do is to re-solder the ambient light sensor module and earpiece speaker. However, the soldering of the ambient light sensor is a most difficult part for this repair. Whatever, let’s do it. Apply some Paste Flux to the bonding pad of ambient light sensor module. Then apply tins to the bonding pad with Soldering Iron. Clean with PCB Cleaner. Apply some Paste Flux to the bonding pad again. Get the detached ambient light sensor module flex cable in position. Secure the flex cable with one specific position soldered by Soldering Iron with curved nozzle first. Then use Soldering Iron with cutter nozzle to complete the remaining soldering process. Clean with PCB Cleaner afterwards. Now we need to solder the earpiece speaker back to flex cable.

It’s time to get the earpiece speaker and front sensor assembly assembled to the display assembly. Re-assemble the phone and test. Press power button to power on. Go to Settings > Face ID & Passcode > Set up Face ID. Face ID can be set up successfully. Press the power button to lock the screen. Press the power button again. The screen lights up. Glance at the iPhone X. The screen can be unlocked automatically. Fault cleared.

【Giveaway】Win Free $300 MWCA 2018 Ticket

As the CeBIT show has come to an end, REWA is now preparing our next journey to the United States for MWCA 2018. The show will take place in Los Angeles during Sept. 12-14, and will then have thousands of attendees from all over the world, including professionals, CEOs etc..

Our exhibition this year will cover everything related to repair business, from parts and tools sourcing, repair services, repair training to broken screens recycle. Visitors can explore and experience immersive demonstrations of most cutting-edge cell phone logic board repair techniques and repair training. We hope to discuss the new opportunities and develop new cooperation with participants in this mobile ecosystem.
Exactly a year from now, we will bring you another marvelous MWCA show. Mark Your calendars and save the date to meet a brand new REWA. With a larger area and newer techniques, our show this year will undoubtedly be an exciting and encouraging event. Below is the floor plan of MWCA. Don’t miss the chance to meet us at Booth 1542, West Hall. Besides, you can schedule a meeting at: sales@rewatechnology.com or contact your dedicated sales directly.

Moreover, we are excited to offer you the opportunity to win a ticket for MWCA 2018, and now are giving away 2 free exhibition pass to two of our lucky fans. Follow the rules below to enter!
1. Register our official website: www.rewatechnology.com; If you have already registered, please come to the second rule directly;
2. Like our Facebook Page：https://www.facebook.com/rewatechnology/
3. Like the first post on our page.
Just 3 simple steps and you will get the chance to win a $300 pass for free. The winners will be picked randomly and announced on July 26th. Good luck and remember the more entries you have, the more chances you have of winning!
Article from REWA Blog.

MacBook Pro Troubleshooting

The sleeker design with the thinner bezels, brighter retina screen, impressive audio quality, and fast performance, the new 2016 MacBook Pros prove clear departure from the previous generation. With last year’s 2016 MacBook Pro family proving to be one of the fastest selling laptops of the year, some unpleasant issues also emerged. Today we will introduce some of the most mentioned 2016 MacBook pro common problems. Since problems may be annoying, solutions can be expected. REWA LAB has been working on MacBook these days and we are honored to offer repair solutions appropriately to the situation you may get in.

Keyboard Issues

‘I have had my new MacBook Pro 2016 w. Touch bar for almost 2 weeks. The first week I really loved the 2nd generation butterfly keyboard but the feel has changed. It seems to me some buttons doesn’t feel like the other ones like they aren’t moving deep enough. For instance the Enter button. Cant really tell if its imagination.’

The keyboard of the 2016 MacBook Pros is totally different from previous-generation MacBook Pro models, and the new butterfly mechanism also appeared to be less reliable compared to older construction techniques. A growing number of customers are running into issues with the keyboard. For example, the new MacBook Pros’ butterfly mechanism keys are noisy, and there are also keys that make different higher-pitched sounds than other keys in some cases, etc.

Speakers Popping

When it comes to the question that what an Apple Mac can do when Windows 10 machines can’t do easily and completely legally? The answer should be running both Windows and MacOS. Apple’s Boot Camp makes it easy for MacBooks to run the Windows operating system. However, it appears that Boot Camp might be causing some serious and uncharacteristic audio issues for those who like to dual boot. Reports of loud crackling and popping noises increased day by day and some even reported a permanent physical damage to their speakers by the annoying pop.

Battery Life

Here comes the most frequent complaints leveled at the new MacBook Pros, battery life. Battery life is an important attribute for a laptop, and it represents a significant portion of the overall score. Users of the Touch Bar model, in particular, realize that battery life is falling short of Apple’s 10-hour estimates for Web browsing and movie playback. According to Apple’s data, the new Pros’ battery life will be determined by what you’re using the machine for. That has always been the case. However, things are different for the new MacBook pros this time because of three things: smaller batteries, a more power efficient screen, Intel’s recent CPU stagnation, and the 15-inch models’ mandatory dedicated GPU. Each element can be listed as a reason for short battery life.

Graphics Issues

Since new MacBook Pro models launched last year, a variety of graphics issues have been reported from some buyers of the new MacBook Pro models, ranging from brightly colored flickering, full-screen checkerboard patterns and screen tearing to corrupt textures and tearing. Although it is not entirely clear if the issues are a hardware or software problem, the result can be annoying. The graphics appear to act up most when users are completing intensive tasks and affected systems may subsequently experience unresponsiveness or a kernel panic, sometimes resulting in the MacBook Pro crashing.

What other 2016 MacBook pro common problems you have run into with? Leave a comment below and share your puzzle with us. Trust REWA and solutions will be on the way. We also provide MacBook air ram upgrade, you can have a check!

Article offer by REWA BLOG. If you want to get more news & tips of phone repair, that will be your best choice.

 

What do you do when Galaxy S6 edge Plus turn on with black screen

Did you ever encounter with black screen after turning on your Samsung Galaxy S6 edge+? It’s a common issue on Samsung Series. When you press power button, the phone stuck with black screen. Yet the buttons were lightened up and the LED indicator was pulsing. So we know its just the screen that fails to wake up.

There will several common ways we will try to solve this problem.
1. Hold the power button and connect the charging cable
2. Boot to recovery mode and wipe cache partition
3. Factory Reset your Samsung Galaxy S6 edge+

You may also read: iPhone 7 black screen repair tutorial

However, if the screen still stays black, it may relate to hardware issue. That’s what we are going to share with you. Fix Samsung Galaxy S6 edge+ black screen – logic board solution.
Disassemble the phone first, and check the logic board. All going well. For Samsung devices, Black screen and other graphics issues are common problems, which are mostly resulted from the damage of OLED relevant inductors. Therefore, our initial judgment – the fault may be related to OLED circuit.
Measure the voltage value of OLED supply with Multimeter.
Normal voltage value on C9028 and C9026 means a normal voltage and normal status on OLED supply. Next, measure the diode value on each pin on OLED connector one by one. With no value measured on Pin 25 and Pin 27, we judge there might be an open circuit on relevant circuit related to the two pins. Since PLCD_MIPI_D0_N and PLCD_MIPI_D0_P of CPU are connected with Pin 25 and Pin 27 on OLED connector via Pin 3 and Pin 4 on F9013, our next step is to check whether PLCD_MIPI_D0_N and PLCD_MIPI_D0_P are in normal status. Let’s do it.
1. Removing the shielding cover on F9013.

2. Take out the logic board and attach it to PCB Holder for the detachment of F9013.

3. Measure the diode value on Pin 3 and Pin 4 of F9013, which is normal.

4. Continue to measure the diode value on Pin 25 and Pin 27. Judging by the measured value, circuit from OLED connector to F9013 is in normal status.

5. So the fault may be related to F9013. and we need to replace with a new F9013.
6. Align to the right place and solder with a new F9013.

Assemble the phone and test. Press power button to power on. The phone turns on with normal display and normal touch function. Fault cleared.

Hope you can solve your problem with our repairing guide. Any problems or suggestions please leave us a message. We will try to reply you in time.

If you want to watch the video please go to https://blog.rewatechnology.com/how-to-fix-samsung-galaxy-s6-edge%2Bturns-on-with-black-screen