How To Fix No Service On iPhone 6?
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This document provides instructions for fixing an "no service" issue on an iPhone 6. The problem can be caused by either external or internal factors. The steps provided describe how to diagnose the issue, which may involve a failed baseband CPU pin, and then repair it by scraping varnish, soldering a copper wire to the exposed circuit, applying a resist mask, and reballing the baseband CPU. Following all 11 steps is intended to resolve a hardware failure causing the iPhone to show no service.
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The document provides troubleshooting steps for an iPhone 6 that has a black screen and higher than normal current draw. It first recommends restarting the phone by holding the power and home buttons. If that does not work, the next steps are to teardown the phone, measure voltages and diode readings, replace the display power chip and surrounding capacitors. The guide determined that a short circuit in capacitor C1554 was causing the issue, and replacing it resolved the black screen problem. It cautions that DIY repairs require care and recommends a repair service for assistance.
I phone 5 full Schematic Diagram 820 3141-b
This document contains proprietary information for Apple Inc. It includes a bill of materials (BOM) for critical components. The BOM lists parts, descriptions, quantities, and reference designators. It also includes tables of alternate parts that can be substituted. Tolerances are provided for resistance, capacitance, and oscillator values. The document is marked as proprietary property of Apple Inc and possesses are instructed to maintain it in confidence and not reproduce or publish it.
iphone 4s full Schematic Diagram
This document provides a schematic for a professional circuit board known as the Pagani DVT MLB Top Placement Drawing. It was created by Filip Pusca, also known as Wites OM Tesla, and contains component information and placements for parts on the board including resistors, capacitors, inductors, transistors, and other electrical components. Special thanks is given to several individuals for their contributions. The schematic also includes manufacturer and part numbers for the boards.
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How To Fix No Service On iPhone 6?
- 1. How To Fix No Service On iPhone 6? Could you come across iphone can't connect with network, make phone call or send messages. The cause is iphone no service. It is Internet Age now, when your phone haven't service, you won't life and work normally. So you must get straight why is iphone no service and how to fix the problem. Bring about iphone no service problem are external and internal. There are professional solution to solve iphone no service with hardware failure from vipprog engineer. If you need phone repair tools, you can try vipprogrammer.com. Fix processing: 1. Turn on the iphone, we find the signal isn't exist, we input ‘*#06#’ for IMEI code, display no results, We can draw the preliminary cause as signal failure.
- 2. 2. Go to Settings – General – About, IMEI code displays right, SIM card readable, and Modem Firmware functions normally. 3. Disassemble the phone, detach phone battery, take down the LCD screen assembly, then take out the motherboard.
- 3. 4. Remove the shield plate on motherboard with cutting nipper. Attach motherboard to PCB holder. 5. Apply some BGA paste flux to the baseband CPU, blow it with hot air gun at 300 degrees centigrade. After a while, take down the
- 4. baseband CPU. 6. Clean the tins on the bonding pad with soldering iron, then dip some rosin with Goot wick for secondary cleaning. After that, clean it again with PCB cleaner. 7. Roll out the maintenance drawing for
- 5. reference. Point out the U1 Y1 pin as data signal failure. Test the U1 Y1 pin of the baseband CPU with digital multimeter, no resistance. We can conclude that the pin has been disconnected. 8. Scrape the insulation varnish off the U1 Y1 pin circuit, solder the tins on the circuit with soldering iron for cable welding afterwards. Then align a solder added copper wire with a diameter of 0.02 millimeter to the exposed circuit with soldering iron. Clean it with PCB cleaner. 9. Apply some UV Solder Resist mask to the repair jump, then put it under the UV dryer
- 6. lamp for 10 minutes. 10. Apply some rosin with soldering iron for cleaning, PCB cleaner afterwards. Once finished, reball the baseband CPU with BGA reballing stencil. 11. Apply some soldering paste with BGA scraper and smear evenly on the right place.
- 7. Blow it with hot air gun for formation, take it down and blow it with hot air gun again. 12. Apply some BGA paste flux to the bonding pad, align the CPU to the right place, blow it with hot air gun at 280 degrees centigrade. 13. Once the motherboard is cooling enough, clean it with PCB cleaner. Afterwards, install the motherboard to the phone and test –
- 8. IMEI code functions well.