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skinny
iamalex
My 8050 rear derailleur got very upset during its last ride and wouldn't shift out of 34/28 coming over the top of a hill full gas. Motor started making a grinding noise, like nothing inside was engaging properly. Seems like it's now permanently in crash recovery mode - After resetting at the junction and pressing the shifter it makes the tic-tic-tic noise like it's jammed. Motor/cage remain disconnected and I can move by hand. Everything works with a 6870 derailleur swapped in.
Plugging the charger in to the junction and running e-tube recognises the derailleur.
Any top tips before I find a shop with the proper diagnostics box thing or consider it toasted?