Locate the diode d109. Check. Model Mur160.
Locate resistor R189. check. Measurement 1.5 ohms 1%.
If any is wrong. change.
We recommend changing the diode d109. By the STTH2R06 model. Is more resistant than Mur160.
Schematic of the charger. Download attachment.
My charger will be damaged. Appears " no out " on the screen. Charging does not start. I hope to fix the charger in the next few days. And add new images.