If you are seeing different behavior before and after your incident, the board is likely damaged and should be replaced; including the TPS65070. Smoke is probably a bad sign.The voltage at SYS is the output of the power path and its value depends on voltage at VAC, VUSB, VBAT and on charge status among other factors.If a piece of solder wire shorted a number of contacts on the board, excess current could have passed through (in or out of) sensitive circuitry, damaging the device.
We have fixed the board by replacing the TPS65070 part, all other parts seem to be intact and are functional as before. Thank you for your advices.
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