Gimbal Mother Board Swap but Gimbal does not move

[jftman]

I have three gimbal Mavic 2 Zoom Pro motherboards. I am suspicious tgat one mb was defective. I now have three mb’s that when I install them on to a gimbal they do not do the power on dance.

I can pair a controller to the drone as I move through and tge camera functions work fine. I can get fpv viewing, take still shots and video.

Since no start up dancing tge gimbal is limp and not recognized by Go4 to try calibrating. Three boards? It seems like something is being missed in terms of expectation that doing a swap to exchange a used fir a defective can be a single step ooeration.

Am I having binding issues?
Am I going to run Python calibration procedure and have it flash the main motherboard into accepting the gimbal?
Am I about to get closer to a startup dance by refreshing the firmware with DJI ass2?

What is more likely three zapped gimbal mb’s or a firmware fix?
Initially i took out a suspicious gimbal mb and swapped it for a working, dancing drone’s.
I ended up with two non dancing drones. Perplexed I put the good one back on the original drone and now it no longer dances.

Hence my thinking that connecting up to the computer may have to happen. Any help would be appreciated. It seems like there are old non switchable bits of hardware and new firmware allowances where swapping does not matter, and I don’t know which bits I have!

 

[SkyeHigh]

Broken ribbon cable perhaps?

 

[jftman]

Broken ribbon cable perhaps?

When switching good for suspicious gimbal I switched the ribbon x 3 to verify them immediately.

Also tested the YAW motor ribbon cable with the credit card sized led continuity and directional response tester. The led’s cycle on and off as the Gimbal arms are moved. Tests Pitch, roll and yaw.

 

[Cafguy]

always replace the existing ribbon cables. just to eliminate them from any future problems such as this. Did you run the python calibration?

 

[jftman]

I have two gimbals with the tops off. Awaiting Ebay tested spares purchased. Is seeing the dance after running Python an option with a Gimbal that does nothing but nothing when drone is powered up?

 

[jftman]

Both of the purchased Gimbal boards gave good results. I made sure to use a ground wrist band. I must have damaged the three boards while rebuilding tge gimbals. Dumb city. Me.