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Di2 Rear Deraileur Not Shifting/Beeping

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  • 26-08-2020 10:59pm
    #1
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭


    On the turbo tonight. Rear derailerur stopped shifting. Was working fine then when I went to shift nothing happened and start to beep.

    Tried crash mode but that didn’t seem to help.


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    #2
    TerryDi2Center
    Registered Users Posts: 11 ✭TerryDi2Center


    What beeps? The derailleur itself? The Junction A? (do you use an MTB display?)

    Does the front derailleur still work?

    What Di2 version? 6770 / 6870 / 9050 / r8150 / r9150 / xt / xtr?

    What happens if you connect the bike to a Windows computer and run the connection check? Does it list all installed components correctly? Is anything missing?


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    #3
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭godtabh


    It 6800 from memory (had the older version and upgraded some parts)

    Its in the smallest cog. Wont shift but front one does. Not sure if its a windows issue but I couldnt get etube to see the system.

    I went back to it this morning and seems to be working now.


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    #4
    Crocked
    Registered Users Posts: 543 ✭✭✭Crocked


    Check a cable hasn't come loose. I had a similar issue a few months back and the cable going into the shifter had come a bit loose.


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    #5
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭godtabh


    Crocked wrote: »
    Check a cable hasn't come loose. I had a similar issue a few months back and the cable going into the shifter had come a bit loose.

    Checked that.

    If the cable was out there wouldn't be beeping i assume?


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    #6
    triggermortis
    Registered Users Posts: 2,684 ✭✭✭triggermortis


    Maybe it beeps to tell you there’s a problem, I don’t know. Do the connectors just push in or do you need a tool to remove/insert them? I’ve never looked that closely at mine


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    #7
    Luxman
    Registered Users Posts: 937 ✭✭✭Luxman


    Ive never heard a sound uttered from mine 6870 setup. It flashes alright and buzzes a bit when the derailleur is trimming but never beeps.


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    #8
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭godtabh


    I think its meant to beep when it hits its limit.


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    #9
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭godtabh


    Yeah, not working again. Will need to bring to LBS.


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    #10
    triggermortis
    Registered Users Posts: 2,684 ✭✭✭triggermortis


    Did you try disconnecting the battery and then reconnecting it again, the old CTL-ALT-DEL? Maybe leave it unpowered for a few minutes before reconnecting.
    Other than checking for a loose connection, or a broken cable (try flexing any exposed cables - depends on how hidden yours are) I don't know what else to suggest


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    #11
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,218 Mod ✭✭✭✭godtabh


    triggermortis wrote: »
    Did you try disconnecting the battery and then reconnecting it again, the old CTL-ALT-DEL? Maybe leave it unpowered for a few minutes before reconnecting.
    Other than checking for a loose connection, or a broken cable (try flexing any exposed cables - depends on how hidden yours are) I don't know what else to suggest

    Haven’t unplugged it yet but will try when I am gone.


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