For me also replacing this board (https://shop.mower24.de/fr/schleifensen ... nt-g3.html) even though the resitance values measured 130 Ohm solved the problem.

Replaced this board (https://shop.mower24.de/fr/schleifensen ... nt-g3.html) even though the resitance values measured 130 Ohm and the problem is gone!

I looked at this card https://shop.mower24.de/fr/schleifensen ... nt-g3.html
the resistance should be 130 Ohm apparently, that what I measure, so should be oke then. Don't have a second mower to test

I have the exact same problem with a 310, replaced the electronic board in the docking station but no luck.
Has to be in the mower, does anybody know where the antenna is located that picks up the F signal?