"Hi i have update now.
i already open my pixhack and all is perfect good, no one bad solder i was check everything its very clean.
i already swap my esc and calibration one by one but still not solved issue about motor test who can spinning together.…"

"Its not hardware issue, because i try every port random and i swap esc i always have 2 motor spin.
And i try check again, when i using 5% power, just A B C motor was spinning normal and D like not have power, but when the power is 6% motor C or D it…"

"i think so, because i already reinstall firmware but still make motor C and D spinning together, i try too for hexa firmware but still same.
i try swap esc and motor still spinning too.
but when i make last thread someone told me like that :
Somehow…"

"hi randy thankyou for advice.
i try when take off but same as like that,3 times quadcopter want backflip, and pitch like not function.
im very sure direction motor CW and CCW and propeller is right.

i forgot that same link 
please watch this, motor…"

"this my log using 3.2 firmware.
still dont know what happen.

thankyou verymuch guys :)2015-11-07 00-29-21 106.bin"

"i was downgrade my firmware, in this video im using 3.2 but i think is not different, i have same issue.
sometimes i cant pitch to making quad forward and my quadcopter always going to back and want to backflip.
motor test in MP C and D still…"

"so i must downgrade firmware?
let me know about that and why taranis can causing this?
thankyou you two very helpful for me!!"

"please check my log, when i thorttle up and test pitch or roll to the full my pixhack was restart.
not happen was going wrong maybe my battery.2015-11-06 04-16-07 100.bin"

"this is my log, new issue when i thorttle up and test pitch or roll to the full my pixhack was restart. what happen? 
my battery?
please check :(2015-11-06 04-16-07 100.bin"

"Absolutely yes, i never find this issue in internet or forum.
i try hard but still dont know what happen.
maybe this issue who make me cant takeoff.
very frustrated lol, but i still learn about this problem.
my goal for make this bird can fly. lol"

"but my quadcopter when takeoff always going random direction and making flip.
is too extreme and i dont know why this happen.
and what do you think about PWM, can i change that value? "

"im still thinking is about esc or mission planner configuration.
to make sure please watch my video, this is a problem i found it.

https://youtu.be/kbHMDrMjcKw

im very appreciate u want help me cala, thankyou verymuch :)"

"i just using motor test now, should i test with propeller again and takeoff?
or i hold my quad when takeoff?"

"this video seems problem like me, after calibration esc my motor normal spinning but after plug in battery again my motor increasing power itself.
https://youtu.be/mgOmsC-wtqs"

"i already swap esc or swap motor, and reinstall firmware but the issue about motor C and D still same.
and i was recalibrated my esc too.
how to fix this issue? or can i change the plug from 1-4 to 5-8 in my pixhak?"