SOURCE: My fitbit blaze no longer tracks my heart rate as of 3 days ago. Everything else works fine.
I would try cleaning the sensor with a bit of rubbing alcohol and a soft swab. Once it is dry try using it and see if it starts working. If that does not work you can contact Fit Bit and see if your unit is under warranty.
SOURCE: changing the time on my fitbit blaze
SOURCE: how to install battery in fitbit blaze? what tool do I need?
1 T3 torx screwdriver
2 metal spudger
3 philips head screwdriver sized PH000
Testimonial: "What is a metal spudger?"
SOURCE: My Fitbit blaze will not hold a charge. It is about a year old. What do I need if anything?
I am wondering if you have a bad battery.
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