Topic: Novena no longer works with battery
I bought a Novena laptop (not the heirloom) from another forum user a while back, and have recently started using it again. I reinstalled Debian last night, and today when I unplugged it from AC, it died instantly. I investigated and discovered that the battery had been overdischarged while it was in storage, and the cells were all around or under 1 volt, so it's dead. I have a replacement 2S battery that I'd like to use, or I might just get another 3S that will work with the same connector. Regardless, back to the issue. The Senoko board no longer will pass DC from the battery Molex connector to the Novena mainboard. I've tried connecting a bench DC supply to the molex connector and supplying 12 volts (with and without also connecting a good 3S LiPo's balancing connector to the Senoko in case it was checking for the cell voltages), and it is not passing any output to the SATA connectors. I've also borrowed a known good 3S LiPo and it didn't work either. There is zero current draw through the molex connector.
So far, I've checked the diodes and MOSFETs and they all appear to be good, and I'm starting to
work through the schematic and check other components. Is there perhaps a built in safety feature on the Senoko that will disable DC output if the battery goes to 0 volts? It still functions perfectly if I plug in the AC adapter into the Senoko board.