Elektronik Atölyem

Repair Workshop: charger won't charge

Pick the symptom; at every step we show what to measure, where and how. Enter your reading and move on based on the result.

⚡ MAINS SIDE · dangerous voltage✓ SAFE SIDE · low voltageMains230 V ACFuse + filterprotectionBridge rectifierAC → DCInput capacitor≈310 V DCSwitch (MOSFET)65 kHzTransformerisolation + step-downOutput diodeSchottkyOutput capacitor5.0 V DCUSB output5 V → phoneFeedbackTL431 + optocoupler

Step 1

What is the charger doing?

Want to see how the board works first? Go to the How it works page →