I had a faulty GX80 showing me a message a few seconds after power on: "Please Turn Camera Off and Then On Again". I knew it was the ibis failing because only one part of the sensor was static and the other part was very wobbly. So I dismantled my camera following this tutorial until I reached the 10th step. Once I had the ibis+sensor out of the camera, I only had to remove 3 screws and to separate the 2 flex of the sensor. Then, I realized one of the tree electromagnets had no continuity, and added some drop of tin to join the broken copper wire. And it's fixed and working again. I am so happy!
I include an image of the point that was failing