Mavic 2 Pro Gimbal does not move

[jftman]

I am now switching a dead gimbal with a working one.
I purchased a crash victim to find the Yaw motor cockeyed in the Yaw arm.
The two cables, one stranded and one short ribbon which connect into the board had no appearance damage.
I pushed back the Yaw motor, it may not be perfectly level but it spinsfreely and does not rub on the dampener.
I checked the firmware and refreshed it, after running Python to calibrate the motors. Which did nothing bcuz they all don't move.
So,
Where could the checking and switching parts start?
Question, I can take the gimbal apart to inspect the transmission cable for rips within. But, when changing a dampener is there risk to spin and tear something from going over a limit of twisting?
This bad gimbal is very very 'flimsey'. It just totally flops around.
(Long here I know!)
I attached two pics of the area inside the nose. There is a dislodged pad or ribbon cable behind the one front OA sensor.

Also the drone motors start and it pairs with controller. The IMU says calibrate but there is no hot button to calibrate it. It only says restart drone. I did that two times but same, situation.

I might next switch the board in the gimbal but I am looking to find where else to check or switch?

Good drone and bad drone to show the normal. Would this damaged pad thing escalate the gimbal fail? The camera works but the signal is glitchy and staticy.

 

[Starz]

The wires or cable shown in your picture has nothing to do with your camera from what I can see. Pictures of the camera itself would help.
Regarding the gimbal, if you haven’t ever pulled a pro camera apart, you are up for a task.

 

[Starz]

It just totally flops around

Normal when not powered on.

 

[jftman]

Ok. Switched bad with known good and it works. Now have a trouble isolated within the bad gimbal. Motor, motors, or cable.

 

[Starz]

Pro or Zoom model?

 

[jftman]

Pro, and I used a Zoom assembly to check the Drone.
I then used a Pro doner assembly to use it top end.
I then had operation, so I swapped the cable that connects to the Drone and concluded all cables were good.
Relief that tge Transmission cable was not defective.

The one trouble was the gimbal board.
I may reflow the solder with a heat gun and test it!

 

[jftman]

Geeze it is hitting on the arms during calibration in coarse and hall (slow), but it isn’t going slow, same as coarse.

Took off the air shroud , now getting closer to being centered, and it is doing the slow step too.

Doing a series of powering down, then running Python routines again.

I don’t have the nose cone on and the dampener is tightendown.
Going to reseat it with nose cone put on.

 

[jftman]

Connected to controller and ran Python. It completes Coarse step. It won't finish, only 60% Linear Hall.
And I have IMU error but on screen no calibration hot button.
Just says Restart Aircraft. See pic
HELP ? RECOMMENDATIONS?
I wish to get the IMU settled out.
Picture is good no static and controller moves the camera up/down

 

[Cafguy]

Why can't you calibrate the IMU within the APP?

 

[jftman]

i believe that when doing the calibration of the compass and imu to get started the screen shows 'calibrate', one click and you are guided through the process.

my interface just says restart aircraft on the imu line.

nit sure how else to do it

 

[jftman]

Why can't you calibrate the IMU within the APP?

I did find it in the sensors section.
I did not truly know if like the compass calibration there should be a hot button when on the home screen it says calibrate…..
But got it done and now the drone is working and flying with the camera pointing where it needs to be.