Schlagwort: Reparatur der Logikkarte

“a cellphone in the U.S. breaks every two seconds”, reported by SquareTrade, a company that insures smartphones. Thirty percent of cellphone owners will damage their phones in the next 12 months, and one in 10 are currently using a phone with a cracked screen. That is to say, even cell phone shipments are approaching saturation, the market capacity of the repair industry remains large.

How many repair tools do I need to have? You may think about the problem when you prepare to open a repair shop. REWA repair technicians with 10+ years of experience have classified repair tools needed into three main categories as following:

Parts Replacement Tools

Logic Board Soldering Tools

Logic Board Advanced Repair Tools

Kommunikation Wartung Stromversorgung

Die communication maintenance power supply is used for logic board repairing and booting test. The communication maintenance power supply is matched with Apple iPhone 4 – XS Max power supply test cable.

Hot Air Gun Rework station

Die Hot Air Gun Rework station is suitable for a variety of components. such as SOIC, CHIP, QFP, PLCC, BGA (especially suitable for soldering of circuits and flex cable). The three tools are used to solve the problem that the repair shop faced every day.

What repairs you can do with the Parts Replacement Tools?

Replace the screen/battery/back battery cover/flex cable/ear speaker and diagnosis whether can power on, etc..

What repairs you can do with the Logic Board Soldering Tools?

Replace the IC/connector Not turning on diagnosing Replace the screen/battery/back battery cover/flex cable/ear speaker, etc..

What repairs you can do with the Logic Board Advanced Repair Tools?

Upgrade storage, unlock logic board repair, NAND repair, etc..

Repair Case Example: “I have lost all the files on my iPhone. The pictures, messages, contacts, and files are very important to me, can you recover the data?” How to recover the data? Let’s take iPhone X data recovery from dead motherboard an example.

Datenwiederherstellung mit iCloud

For phones with iCloud backup, you can recover the data from the iCloud.

Datenwiederherstellung mit Software

For carelessly deleted data of phones in good conditions, you can recover the data with the help of some software.

Data recovery with hardware

However, if the two methods don’t work. How to recover data from a dead logic board?

Schritt 1. Use screwdrivers nd straight tweezers to detach the dead logic board from the iPhone. And then attach the dead logic board to the PCB holder.

Schritt 2. Detach the A8 CPU, EEPROM, and NAND Flash from the dead logic board. Please deal with these chips carefully. Because the three well-performed chips are a must of successful data recovery.

Schritt 3. Use the Soldering iron and the razor blade to clean the three detached chips. Rosin, BGA paste flux and PCB cleaner are also needed during the process. Schritt 4. Complete BGA reballing with the help of the hot air gun rework station, BGA reballing stencil, and straight tweezers.

Schritt 5. Detach the A8 CPU, NAND Flash, EEPROM from the new logic board.

Step 6. Transplant chips detached from the dead logic board to the new logic board.

Schritt 7. Get the logic board installed and test whether the data has been recovered successfully.

Hinweis:

1. There are possible risks for the logic board data recovery process.

2. Für den Betrieb werden qualifizierte Reparaturtechniker benötigt.

3. Die heruntergefallenen Pads sind leere Pads, die keinen Einfluss auf die Funktion haben.

4. Apple’s official after-sales support does not accept the phone repaired by third-parties.

5. Die Daten können nicht wiederhergestellt werden, wenn einer dieser drei Chips (CPU, NAND Flash, EEPROM) defekt ist.

6. This cellphone is still calling failed until this step because the whole process is for data recovery only. The phone may be faced up with some other problems. Here is a video guide for your reference:

It has always been our aim to power your repair business. For quick ordering, please visit our online shop – shop.rewa.tech. Any questions and suggestions please feel free to contact sales@rewa.tech.