16 U2 + EPROME
Original price was: ₨ 3,500.₨ 2,500Current price is: ₨ 2,500.
16 U2 + EPROME
SN2012027 Tristar IC, which manages charging and USB functions. The “EPROME” refers to the 8N Q4EE EEPROM chip, which stores critical data related to the phone’s charging features. These two components are often replaced together when repairing charging failures on the iPhone 15 and 16 series.
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16 U2 + EPROME
SN2012027 Tristar IC, which manages charging and USB functions. The “EPROME” refers to the 8N Q4EE EEPROM chip, which stores critical data related to the phone’s charging features. These two components are often replaced together when repairing charging failures on the iPhone 15 and 16 series.
Function and repair
- U2 SN2012027 (Tristar IC): This charging chip controls power flow from the USB-C port to the battery and the rest of the phone. When this chip is damaged, it can cause charging issues, with the phone failing to charge or not being recognized by a computer.
- 8N Q4EE (EEPROM): This EEPROM chip stores data that needs to be transferred to a new EEPROM when replacing the U2 IC. If the original data is lost or corrupted, both the U2 IC and a new EEPROM chip must be replaced using a specialized programmer.
Repair process
- Diagnosis: A technician first determines if the U2 chip is faulty. If the phone still has charging data stored on the EEPROM, only the U2 chip may need replacement.
- Replacement: If the EEPROM data is lost, a technician uses a programmer to read the data from the old chip (if possible) and write it to a new EEPROM. The new U2 and EEPROM chips are then soldered onto the logic board.
- Specialized tools: Because of this complex process, special programming tools are required, such as the XZZ or YCS universal EEPROM programmers, to read and write the necessary data.
Why these components are often sold as a set
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