...After battery change. Mechanic says it�s broken due to an electric impulse. He says there is no way to repair. A new one costs �600 - damn it! Did some of you ever experience this? Is there a way to fix it? What to do, maybe there is a simple part to change concerning the speed signals?

I have no idea where to start, thanks for your advice bros!!

Yt660x, 2007

Regards from vienna,
Martin