Hello,
We are having problems that are related to this charger and I do not know what it can be.
The fact is that 1 out of 3 times that we connect the battery to any pcb that has this charger, the components R2, Q4, Q5 and U1 (image attached) are broken. Q4 and Q5 give continuity between spout, drain and door. U1 shows a hole in the center of the component. We try to repair the PCB in each case replacing all the components apparently broken and it does not work either, so I suppose there are some more components in poor condition.
One of the hypotheses that I think it can be is that the inrush current (it has always been broken at the time of the battery connection) when trying to charge capacitors C3 and C4, but I have done the test of desoldering them and it has Past exactly the same (see picture 2)
Should I put some filter in these capacitors? What solutions do you think of?
Thanks in advance
