Hi ,
For the bq20z90+ bq29330 board, we found an issue that when after we charge and discharge a few time , the bq evaluation show that the CHG and DSG column have been turn it to green and it have no output at the pack- and pack + pin. We found out that the Q5 mosfet(please refer to the below pictures) have been short and we replace a new part .After replace it ,the bq evaluation software still show that the CHG and DSG column still green. We try to re-program manually the ROM by using the bq easy, this CHG and DSG column had been turn it to red and the pack- pack + have output. Is it the firmware had been corrupted .Please help to advice.
Thanks.
Regards,
Loon