Up until about a week ago, my custom PCB with a BQ40Z60 had been working well, with no trouble. I had disconnected the battery from the board several times for a short period of time, with no trouble.
About 1 week ago, I disconnected the battery and the charge cable so that I could put my development system away and work on other projects.
Now, when I plug in either the battery, the charge cable, or both, my board does not turn on. I'm not able to communicate with the BQ40Z60 over SMBus using the EV2300 dongle, and both the PBI and Regn pins measure 0V.
I'm using the BQ40Z60 in a 4S configuration, based closely on the "Typical Application" in the datasheet.
