Congratulations for finding the fault. In all these years I have only seen an EPS RD that failed, and that one had some serious CX on it plus pressure water cleaning and was 8 years ago.
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EPS rear derailleur dead
Moderator: robbosmans
You have just saved me £s.roadhog44 wrote: ↑Fri Jun 08, 2018 8:34 pmThere is a small grub screw inside the lever and seems to adjust the contact point of the shift button on the microswitch...i experienced some intermittent shift issues and this solved it as there was not quite enough contact. You can test this by removing the lever cover and pressing the microswitch button with a screwdriver or similar.
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I'll PM my paypal detailsStrapOn wrote: ↑Sat Feb 01, 2020 7:01 pmYou have just saved me £s.roadhog44 wrote: ↑Fri Jun 08, 2018 8:34 pmThere is a small grub screw inside the lever and seems to adjust the contact point of the shift button on the microswitch...i experienced some intermittent shift issues and this solved it as there was not quite enough contact. You can test this by removing the lever cover and pressing the microswitch button with a screwdriver or similar.
Only kidding -