eTap rear mech missing shifts

step83

Rather confusing situation at the weekend, a few times in the ride the rear mech simply stopped responding, on my Wahoo I can see the gear its in, its always around mid cassette, sometimes you can bring it back to life shifting up then back down, other times it just goes to stops responding for a while then comes back an catches up with all the missed shifts.
Swapped the batteries front to back, an changed the shifter ones at a random co-op again same issue, front mech works fine.

Is it worth de pairing the mech an shifters, then trying again? I can't see any obstructions and when its not responding you cant see it try to move either.

fuel2000

It’s a known problem, there’s a whole thread about this on weightweenies. Sram will swap it for a new one if your still under warranty. I’ve just had mine swapped out.

step83

Ah OK thanks, guessing its direct via SRAM rather than the retailer, groupsets only about three months old.

fuel2000

step83 wrote:

Ah OK thanks, guessing its direct via SRAM rather than the retailer, groupsets only about three months old.

I went via my retailer “wiggle” , but I would ask sram uk direct as it would be quicker.

sungod

contact the retailer, they have the warranty channel back to sram - sram's uk website says they don't deal direct with consumers

http://www.sramtechcentre.co.uk/

step83

Yeah, I got it brand new boxed from an eBay seller, this could be fun!

rafletcher

Ah, the joys of Bluetooth :evil:

step83

rafletcher wrote:

Ah, the joys of Bluetooth :evil:

But, its not bluetooth, looks like a common fault after much googling, SRAM seem pretty happy to just swap out the offending device, lead times nothing is quoted.
Going to a service centre later to have a chat about the what to do.