SAMSUNG A13 SM A135F charging problem solution
🔌 SAMSUNG Galaxy A13 SM-A135F Charging Problem Solution | Not Charging / USB Port Repair
📋 Problem Overview:
If your Samsung A13 SM-A135F is showing:
⚠️ Not charging at all
🔌 Cable connected but no power
🔋 Slow charging or intermittent connection
⚡ Charging symbol appears and disappears
These are signs of a charging hardware issue — most commonly from the charging port, charging IC, or broken lines on the motherboard.
🔧 Hardware Solution Steps:
✅ Step 1: Check External Factors
Use original Samsung charger and cable
Test with another charger to confirm if it’s not a cable issue
Try charging via USB on a PC to see if there's response
✅ Step 2: Clean the Charging Port
Use a soft brush and isopropyl alcohol to clean dirt
Look for corrosion, bent pins, or loose port
✅ Step 3: Check Charging Port (Type-C USB)
Open the phone
Use a multimeter to test for VBUS (Voltage) on the USB pins
If no voltage, replace the USB charging connector
✅ Step 4: Inspect Charging Lines / Jumper Ways
Use charging ways diagram (or schematic)
Test VBUS, GND, D+, D- lines
If any line is broken, apply a jumper wire to restore connection
✅ Step 5: Check Charging IC (U2 or PMIC)
If port is fine but no current flows, the charging IC may be damaged
Reflow the IC with hot air (350–380°C)
If no change, replace the charging IC with a new one
⚠️ Tips Before Replacing Parts:
Make sure battery connector is not loose
Check for liquid damage around USB area and IC
Always use ESD protection when working on mainboard
Don't apply excess heat to surrounding components
🧠 Common Causes:
Broken/dirty charging port
Damaged USB line on PCB
Faulty charging IC
Battery protection circuit failure
Moisture damage
📌 Final Advice:
If you're not getting voltage at the battery connector after testing USB input and charging IC, the issue may lie deeper in the power management circuit.
If you need charging ways diagrams or jumper solution images, let me know — I can help with those too!
Would you like a visual repair diagram for the Samsung A13 SM-A135F charging issue?