We Have 12 Years Experted Technicians
OUR SERVICES
- CPU & RAM REPAIR
- Edge Glass Replacement
- Motherboard Repair
- True tone Repair
- IMEI Repair
- I Phone Back Cover Replacement
- Cracked Screen Repair
- LCD Replacement
- Water Damage Repair
- Buttons Repair
- Speaker & MIC Changing
- IC Changing
- Charging Problem
- Wifi Issues
- Camera Problems
- Battery Replacement
- Touch Glass Changing
- Face Id Repair
- Fingerprint Repair
Mobile phones’ CPUs operate similarly to the brain in our bodies. Because of this, CPU repair is the most challenging aspect of mobile phone repair. Check out our blog today to understand how to repair cases involving the CPU and how the iPhone 7 won’t power on due to CPU pseudo-soldering.
Problem
To start the phone, press the power button. There is absolutely no reaction. Disassemble the phone. Connect the DC power supply to the phone. Press the power button once more. The current pointer oscillates between 0 and 50–60 mA before remaining still. Link your phone to your PC.
Which suggests that the logic board’s power supply or USB IC may have been defective.
Diagnosis
The power supply of the logic board is measured first.
Logic board should be removed. Connect the DC Power Supply and the battery connector. On the Power Supplier, depress the power button. A power button press will then be detected by the system.
Let’s now measure the power supply’s 16 rails for the logic board. The measurement’s result is typical.
Therefore, the next step is to swap out the USB IC for a new one and test the device.
Connect the PCB Holder to the logic board. First, remove a little of the shield plate. And using a hot air gun, separate the USB IC from the circuit board. After that, clean the bonding pad.
Retest after soldering a fresh USB IC. The issue has not been solved.
Troubleshooting
Now that the CPU has been damaged or pseudo-soldered, we can confirm it. Resolder the CPU and check its functionality. the hot air gun is used to remove the shield plate. Attach high-temperature tape to the parts surrounding the CPU. then use a hot air gun to separate the CPU from the board. After cleaning the bonding pad, remove the solder from the CPU.
We must now reball the CPU. Position the BGA Reballing Stencil. On the stencil, uniformly distribute the solder paste. To ensure that all solder balls completely solidify, equally heat using a hot air gun.
Wait two minutes after finishing for the CPU to cool. BGA Paste Flux should be applied on the bonding pad. Place the reballing-completed CPU in place and use a hot air gun to solder. Clean with PCB Cleaner after finished.
rebuilding and testing
We can now put the phone together and test it. Install the display assembly and logic board. Press the power button when the battery is connected. The phone powers on as usual. Test the function. All is well. Fixed the issue.
How to fix or replace a broken Apple Watch screen
Some would suggest that you go to the nearby Apple Store or Apple Watch repair facility. For the record, these shops and services can assist you in solving this issue, but at what cost? You would typically pay significantly more for this alternative than for expert repair services from a reputed company like Screen Fixed.
At Screen Fixed, we genuinely care about our customers and work hard to create long-lasting business connections. The cost of these repairs in our repair shops is kept as low as possible primarily because of this. The Screen Fixed website allows you to instantly schedule your Apple Watch screen repair at the nearby repair facility while also viewing the associated charges.
It goes without saying that we will be devastated if the back glass of our beloved iPhone 13 Pro, a very expensive electrical device, breaks. If its back glass is broken, how can we fix this issue? It’s a bothersome problem that we run into frequently. Because replacing or refurbishing its rear glass will be very expensive. Furthermore, it is unreasonable to demand repair knowledge.
Benefits of an Upgraded Version
greater integration, 3 in 1
Operating system built-in; no other computer needed.
It will be portable for your business and take up less room.
An integrated fume extractor stops the spread of dangerous fumes. Most of the smoke produced by the breaking of the back glass is toxic. This feature will lessen the harm done to employees and improve consumer satisfaction.
Autofocus Mechanism
Red Light Auto-focus for practicality and precision.
Without using any other external force, it can autonomously locate the item in a given area. It is more accurate and sensitive in this way.
Here are several ideas about how to repair the iPhone 13 Pro’s cracked rear glass:
First, we push the auto-focus button while placing the iPhone 13 Pro’s glass back under the focus pin. We set the iPhone13 Pro down on the workbench once the indicator is on. Next, we open the drawing that we had already made (please note that the system contains a variety of drawing kinds and that the ones for the iPhone 13 Pro will soon be updated automatically). The drawing needs to be repositioned and adjusted before we begin in order to ensure its accuracy.