Quartz Minute Repeater, ca. 1992
Scotch Tape to protect the Lugs
and my favorite Bergeon opener made sure I did not leave ugly marks. In this case it really paid off. Because the center second hand would not start at all first. I then tried to replace the battery many times, sometimes the center second moved a bit. By the way, the watch had been dead for about 8 years.
Finally I decided to put it onto the quartz driving machine. As soon as the center second started moving, I switched to the date correction mode (indicated also by the center second hand) and then I used a strong scotch tape to press the pusher A (at 2 o'clock" down and let the center second run in fast set mode for an hour. That obviously solved the problem with the stepmotor. The watch is running fine since.