Regarding Spark 3 cardio + music out of the box HR Sensor not working

siegebert Registered Users Posts: 1
New Seeker
edited January 24 in TomTom Sports

I had bougth one 4 years ago, then 3 years ago I already bought a spare one. I tested it basicly but now it was time to switch and I see the HR sensor is not working. Yes I did a factory reset, update to the same version as my other device, activated the sensor. In tracking sleep and HR are of for the moment. Something I can do when I open it? I already replaced the battery once in my old one.

Any suggestion would be helpful.

Thanks in advance,



  • tfarabaugh
    tfarabaugh Posts: 16,995
    edited April 2021
    I doubt you can replace the HR sensor, it is not replaceable like a battery and I am not sure can source one anyway. Considering that TT Sports went out of business almost 3.5 years ago you would probably be better off just getting a new watch, there are plenty of brands out there with better feature sets for less money these days