Constant beeps after replacing main board

[Phantom808]

Triple checked everything, constant beeps, crazy flashing LED's (fast red). Update doesn't help.

Replaced my board after frying my FPV port. Now it has a constant steady beep on start up. Tried everything....

Any info would help

Thank you!!!

 

[CityZen]

Verify you have +5.5V at the X3 connector (brown = gnd, red = power).
Which Phantom do you have?

 

[J.James]

Also make sure the plug that controls the motors that goes in to the m1 m2 m3 m4 ports of the naza is in the right row of pins.
and if you know all 4 plugs to all 4 escs are plugged in and pushed down all the way then start checking the soldering on the power wires from the main board to the escs is indeed soldered down really good.

a few weeks ago when replacing a board I had one wire to one of the escs that even tho it looked like it was soldered down really good It was giving me the beep beep beep thing intill I soldered the joint again.

and the m1 m2 m3 m4 plug is some thing that I useally end up plunging in wrong every freaking time any time i have replaced a board.