Can anyone point me to the location internal of the I'm on the Phantom 4 Pro.

I am asking cause I believe mine is unplugged or not functioning. I get a error when I tell it to calibrate saying it's disconnected.

If you are referring to the IMU, check to make sure that your app is connected to the Phantom 4 Pro. If the IMU itself is disconnected, you would have to have a technician look at your aircraft. Can you send me a personal message and try to add a screen shot so we can better determine the next step? Thank you for your time.

PM Sent Mark -

Also here is a short video of what is going on.

That one needs to go back.

Its not something I can just go open up and plug back in? It was in a a crash and I am really not for a huge bill.

fansba014582 Posted at 2018-3-13 15:32
Its not something I can just go open up and plug back in? It was in a a crash and I am really not for a huge bill.

I'm thinking you have bigger issues than just plugging something back in. Sorry for your troubles, but I'm thinking sending it in might be your safest bet.

So can anyone point to what needs replaced? I would like to educate myself on what is broken before I mail it in.

rholbrook85 Posted at 2018-3-13 16:07
So can anyone point to what needs replaced? I would like to educate myself on what is broken before I mail it in.

The IMU does not plug in, it is soldered into the main board, and you can't buy a replacement. Try going to the IMU display section of the settings, it should show the IMU values, but more importantly, it should tell you there if the IMU is not funcxtioning. BTW, there are two IMU units in your aircraft for redundancy.
If you could take a good shot of the settings and post it, that would help. Please don't shoot it like the clip you did before because the display is not readable, use a screen-shot app.

So should I side load a screenshot app? I am using the pro plus controller.

In that screen the values show unknown.

rholbrook85 Posted at 2018-3-13 16:17
So should I side load a screenshot app? I am using the pro plus controller.

In that screen the values show unknown.

OK, now I understand, it is a little different using the plus display. It is just that we need to be able to read what is displayed.

Maybe this will help

Display Info

rholbrook85 Posted at 2018-3-13 16:26
Maybe this will help

Display Info

Yes, that was what I was looking for. It appears that both IMUs are at fault, or at least not communicating with the main control board. That is something that can only be fixed by sending it back to DJI for repair.

So can I just buy a new control board and replace it?

rholbrook85 Posted at 2018-3-13 16:35
So can I just buy a new control board and replace it?

As far as I know, no. And it is not a trivial job. If DJI perform the repair, then you can be sure it will be OK, but you would need to be a good repair expert to do it yourself.

I understand its not trivial. Honestly I have no money in the drone and dont mind learning how to fix it. I just would like to know what boards I need to replace so I can go look at the steps to do it.

Im not saying im a expert but I am patient and know how to work on electronics just not 100 percent sure what needs replaced.

I would send it in but I have a feeling its out of warranty and it was crashed, I am just guessing the crash either caused this or was the cause of this.

rholbrook85 Posted at 2018-3-13 16:52
I understand its not trivial. Honestly I have no money in the drone and dont mind learning how to fix it. I just would like to know what boards I need to replace so I can go look at the steps to do it.

Im not saying im a expert but I am patient and know how to work on electronics just not 100 percent sure what needs replaced.

As far as I am aware, DJI do not sell the boards as spares. Your only option is to find someone selling an aircraft for parts, and hope the board is OK.

fansba014582 Posted at 2018-3-13 15:25
PM Sent Mark -

Also here is a short video of what is going on.

In your video, it does say that an update is required. Have you tried connecting the Phantom to your PC and trying to update using the Assistant 2 program. It is worth trying this in case there is an issue with the existing firmware.