The hobbyking PDB has fried 2 pixhawks. Probably because it's outputting the battery power supply voltage straight into the pixhawk power input. On a 4s battery that's 16+v into a device expecting 5v!
Link to offending PDB: https://hobbyking.com/en_us/hk-pilot-power-vi-module-distribution-board-and-dual-ubec-all-in-one-120a-and-10s.html
