My 2 year old single side Stages PM has stopped working. New battery. Green light on crank arm. Removed sensor from Garmin and reconnected. Connects fine. Calibrates fine. But provides no power or cadence.

any insights on fixing or replacements now that Stages went OOB.

No insights to fixing it. But if you are willing to get new, I'm very happy with 4iiii. Although when I got mine, they didn't have the new rechargeable battery PM. Mine eats coin batteries and it seems like every 3 or 4 months I'm putting a new battery in. I'm considering getting their newer model that is rechargeable.