I need help figuring out what fried on my APM 2.6. It turns out the 3DR power module that I was connecting my board to is putting out waaay more than the 5V to the board...so naturally...my board was toasted cause I didn't check the 5V before hooking it up!! We all know what "assume" stands for.... :/
Anyway, I replaced the power module and checked my voltage regulator and the output is 3.3V with a 4-5V input. After spending some time searching online, I'm unable to come up with what may be dead on it. All the fuses I can find (the ones by the PM cable and the micro USB connection) are fine.