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Repair information for the Fitbit Charge HR. Released in January of 2015. Model numbers: FB405BKS (small) and FB405BKL (large).

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Heart rate sensor Fitbit charge hr

How do your fix/ replace heart rate sensor? Half the time it will flash the blinking heart but never read and the light on the inside of the watch itself no longer lights up. Any idea on cost /process?

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@newayulike

there are of course no schematics for the Fitbit. You would rely on something like this guide Fitbit charge HR Disassembly to see if there are obviously damaged components. I would probably start with the battery since these error could be originating from a poor battery condition. Fitbit Charge HR Battery

Fitbit Charge HR Battery Image

Product

Fitbit Charge HR Battery

$17.99

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