Fix Samsung Galaxy A73 5G Not Charging - Moisture

 

Fix Samsung Galaxy A73 5G: Troubleshooting Charging Issues & Water Damage

Is your Samsung Galaxy A73 5G refusing to charge, or are you seeing a "Charging Warning" message on the screen? A common culprit for this issue, especially after liquid exposure, is a component on the phone's main logic board that has shorted out. This guide will explore a specific, advanced repair for this problem.

Understanding the Problem

Modern smartphones are designed to detect faults in the charging circuit to prevent further damage. If water or debris gets into the charging port, it can cause a short, which the phone's protection circuits detect and flag with a warning. A common component to fail in these cases is a small capacitor or diode near the charging port, often identified by the code "0603".

Disclaimer: This is for Professionals Only

Warning: The procedure described below involves micro-soldering and working with delicate components on the phone's motherboard. Attempting this without proper training, tools, and expertise can result in permanent, irreparable damage to your device. It is highly recommended that you take your phone to a professional repair technician or an authorized service center.

The Professional Repair Solution

For a trained technician, a common fix for a shorted charging circuit is to remove the faulty component. As shown in the image, the component labeled "0603" is a likely candidate. It may be a damaged capacitor or a TVS diode that has become a short circuit, preventing the phone from charging.

Step-by-Step for a Technician:

1. **Diagnosis:** The technician will first use a multimeter to confirm a short on the charging line.
2. **Component Location:** Using the phone's schematic diagram, they will locate the faulty 0603 component near the charging port on the main logic board.
3. **Component Removal:** With a precise soldering iron or a hot air rework station, the technician will carefully and cleanly remove the small component. The goal is to lift it without damaging the surrounding traces or solder pads.
4. **Reassembly and Test:** After removing the component, the phone is partially reassembled to test if the charging issue is resolved. If the charging warning is gone and the phone begins to charge, the repair is successful.

Final Recommendation

While seeing a simple fix like this can be tempting, the risk is extremely high. The components on a phone's motherboard are microscopic, and a single mistake can render the device useless. For the safety of your device and your data, always entrust complex repairs like this to a certified professional who has the right tools and knowledge.