history: 2 years old external wired DA Di2 installed on a Scott Addict R2
bike used almost daily, 30-80mi/day (depending on training schedule)
for the last 30 days I haven´t cleaned it up and the bb area (and wires) is very very very dirty (dry mud, it´s been raining sometimes)
2 days ago I noticed something was wrong, but it happened only 3-4 times and then stopped
but today the problem showed up frequently and I could replicate it at home
I thought it could be the battery, but I charged it and the problem is still there
here´s what´s happening:
everytime I shift the RD, it moves the chain to the next sprocket correctly - BUT after a few seconds, the junction box blinks red twice and then the derailleur moves by itself again in the direction I had shifted before (up or down) - causing another (unwanted) shift...
my RD is ghost shifting!!!
I would really appreciate some help here...