Samsung A11/M11 Stuck Logo Problem ✅✅ | Fast YouTube Guide for CPU Reballing | Full Repair Solution

Описание: samsung A11 Logo Stuck Solution: CPU Reballing Guide

If your Samsung A11 is stuck on the logo screen, it may be due to hardware issues, such as a faulty CPU connection. Reballing the CPU can resolve this issue if software fixes like flashing the firmware have failed.

Key Steps:
Tools Required:

Rework station or hot air gun
Soldering paste and flux
Stencils for CPU reballing
Precision tweezers
Microscope (optional but recommended)
Preparation:

Disassemble the device carefully.
Detach the motherboard from the device.
Locate the CPU and ensure the work area is clean and free from static electricity.
CPU Removal:

Use a rework station to heat the CPU evenly.
Gently remove the CPU once the solder melts.
Cleaning the CPU:

Clean the CPU and motherboard pads using solder wick and flux.
Ensure all residual solder is removed to create a smooth surface.
Reballing the CPU:

Place the CPU into the stencil.
Apply solder paste evenly and heat to form new solder balls.
Reattaching the CPU:

Align the CPU with the motherboard pads and heat it carefully until it reflows.
Ensure proper alignment to avoid damage.
Testing:

Reassemble the device and power it on to check if the issue is resolved.
When a Samsung A11 gets stuck on the logo screen and software solutions (like factory resetting or firmware flashing) fail, the problem may be hardware-related, particularly with the CPU's soldering. Over time, due to heat, physical stress, or manufacturing defects, the solder balls connecting the CPU to the motherboard may crack or lose proper contact.

Reballing the CPU involves removing the CPU from the motherboard, cleaning the old solder, applying new solder balls, and reattaching the CPU. This restores a stable connection between the CPU and the motherboard, potentially resolving the booting issue.

This procedure is highly technical and requires specialized equipment and skills. It’s recommended for experienced technicians or under professional guidance.