Short circuit in UPS PIco HV3.0 Stack #64
Description
Hi,
Recently I purchased a second hand (but unused) UPS PIco HV3.0 Stack. Everything seemed fine on receiving and I put it away untill I had time to try it.
When I had time to try it I hadn't looked at the battery connector pinout and the pinout of the included battery. After plugging in the battery some magic smoke escaped which I was unable to catch and put back 😂 Upon visual inspection under a soldering microscope I haven't yet found any burnt parts, but I'm quite sure something must not have survived.
I have measured the boards ground <-> vcc points and haven't found any short circuits there. The board works when connecting to a Pi3b 1.2, but unfortunately the board doesn't recognize the battery. The orange BAT LED lights up continuously and the charge LED stays off.
My guess is that one of the parts in the charging part is broken. I really want to use the board and so I want to repair it but am unable to find any schematics, or the schematics for the charging part of the board.
Is it possible that you can supply me with the schematics (and BOM) for the charging part of the board?
Thanks in advance! 👍