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Konka kgys_ 1804 electric kettle fault code
After investigation, it is found that the copper-clad section a-b near the rectifier diode has been ablated and the circuit board has been blackened. The resistance r 12(0.8 ohm) has been deformed, indicating that there is a serious short circuit in the circuit. After further inspection, it is confirmed that D1~ D4, u3, u4 and r 12 are damaged. Check the circuit elements r4, r5, c6 and d6 again, and find that the nominal value of c6 is 2200pf, and the measured value is 3400pf, so the capacity is very unstable. U3 is ap8263, which is hard to find locally, so it is replaced by ob2263. Replace the damaged parts, connect parts a-b with 2a fuse, energize and try. Everything is normal, troubleshooting.