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Shimano Ultegra 6770 di2 Issues

  • Neil Barker
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19 Jun 2017 16:24 #10662 by Neil Barker
Neil Barker replied the topic: Shimano Ultegra 6770 di2 Issues
Thanks Graeme / Lorna. I will have a look at what you suggest. Was working perfectly then all of a sudden there appears to be an issue. Searched on-line and lots of potentials to check out.

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19 Jun 2017 13:50 #10658 by Graeme Matheson
Graeme Matheson replied the topic: Shimano Ultegra 6770 di2 Issues
Not a Di2 expert but have you updated to the latest firmware? is the chainline and limit screws adjusted correctly? It could be continuing to try to shift / align the mechs even when not being ridden.

I assume that Mark L will be along shortly to tell you that you shouldn't have electric shifting and that you need a new chain (as that fixes most things apparently).

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19 Jun 2017 13:08 #10656 by Lorna Denny
Lorna Denny replied the topic: Shimano Ultegra 6770 di2 Issues
This shouldn't happen as it's a lithium ion battery which shouldn't self discharge more than ~2-3% a month. Which suggests there's a drain on it somewhere.
Have you checked the connection? With the battery below the BB it's exposed to loads of crap and dirt and silt can get into the unit. I've noticed this before with mine.

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19 Jun 2017 12:02 #10655 by Neil Barker
Neil Barker created the topic: Shimano Ultegra 6770 di2 Issues
Hi,
Any advice welcome.
I have shimano Ultegra 6770 di2 issues. After a full charge the battery discharges (when connected to bike) within 72-96 hours despite not being used. I have bought, charged and fitted a new battery and this does exactly the same.
As I am no bike expert I wondered if anyone knew what might be causing this.
Thanks for your help.
Neil

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