BeagleBone battery not working?

I used to be able to power my servo and DC motors with the 2 cell lipo input. Now, I can’t power the BB on at all through the lipo input and for rc_test_adc (using 9V plugged into the wall - this is the only way I can power on the board) I’m getting the following:

adc_0 | adc_1 | adc_2 | adc_3 |DC_Jack|Battery|
1.75 | 1.63 | 1.72 | 1.02 | 9.25 | 0.00 |
On my other (fully working) beaglebone, the Battery level reads 2.1 running the same test with the same power source.

Anyone have any idea what could be the issue?