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Tools Featured in this Teardown

Introduction

This is a complete teardown of Fitbit surge, let's see what makes this "Ultimate Fitness Super Watch" tick.

This teardown is not a repair guide. To repair your FitBit Surge, use our service manual.

  1. FitBit Surge Teardown, The Surge: step 1, image 1 of 2 FitBit Surge Teardown, The Surge: step 1, image 2 of 2
    • Fitbit's latest fitness "super watch" has some pretty nice features, including:

    • Built-in GPS

    • Wrist-based optical heart rate monitor

    • Wireless syncing to smartphone or computer

    • 7+days of battery life without gps and up to 7h with gps (according to some reviews)

  2. FitBit Surge Teardown, Removing the bands: step 2, image 1 of 3 FitBit Surge Teardown, Removing the bands: step 2, image 2 of 3 FitBit Surge Teardown, Removing the bands: step 2, image 3 of 3
    • Remove the four screws

    • The bands are glued pretty well so you need to cut your way through to remove them and expose the fibit body

    • Cutting through the middle and lifting sideways worked pretty well

  3. FitBit Surge Teardown, GPS antenna: step 3, image 1 of 3 FitBit Surge Teardown, GPS antenna: step 3, image 2 of 3 FitBit Surge Teardown, GPS antenna: step 3, image 3 of 3
    • Once you remove the bands scrape away the glue on the top side to expose the GPS antenna

  4. FitBit Surge Teardown, Bluetooth antenna: step 4, image 1 of 2 FitBit Surge Teardown, Bluetooth antenna: step 4, image 2 of 2
    • On the other band you'll find the bluetooth antenna which is actually a flexible antenna glued to the inside of the band.

    • This antenna can be left on the surge if you try to detach wrist band by fitting something thin between front glass and the band.

  5. FitBit Surge Teardown, Opening the body: step 5, image 1 of 3 FitBit Surge Teardown, Opening the body: step 5, image 2 of 3 FitBit Surge Teardown, Opening the body: step 5, image 3 of 3
    • With the bands out of the way it's time to go inside Fitbit's guts

    • Remove the four metal parts as shown in the photo

    • After that just insert a screw driver or other sharp object into the fissure and voilá

  6. FitBit Surge Teardown, Touchscreen controller: step 6, image 1 of 2 FitBit Surge Teardown, Touchscreen controller: step 6, image 2 of 2
    • Right after splitting Fitbit into 2 the first component is immediately exposed

    • Cypress CY8CTMA463 touchscreen controller

  7. FitBit Surge Teardown, Microcontroller: step 7, image 1 of 3 FitBit Surge Teardown, Microcontroller: step 7, image 2 of 3 FitBit Surge Teardown, Microcontroller: step 7, image 3 of 3
    • After removing the large shield on the main PCB the brains of the gadget become visible

    • Silicon Labs EFM32 Giant Gecko (ARM Cortex-M3) EFM32GG395F1024

    • Micron Serial NOR Flash N25Q064A11ESEA0F

    • (Cypress touchscreen controller still visible here plugged into the main PCB)

  8. FitBit Surge Teardown, The other side: step 8, image 1 of 2 FitBit Surge Teardown, The other side: step 8, image 2 of 2
    • After removing the battery holder the main PCB can be carefully dislodged from the plastic body

    • Texas Instruments Battery Charger BQ24232H

    • MediaTek GPS Receiver MT3339 (couldn't find any datasheet, just a press release on it)

    • Texas Instruments Bluetooth Controller CC2564

  9. FitBit Surge Teardown, LCD and back side: step 9, image 1 of 2 FitBit Surge Teardown, LCD and back side: step 9, image 2 of 2
    • The LCD is secured with 3 very visible screws on the bottom side

    • Sharp TFT-LCD LS013B7DH01

  10. FitBit Surge Teardown, Family photo: step 10, image 1 of 1
    • Here are all the parts after the teardown

Tiago Monte

Member since: 05/26/2015

88 Reputation

1 Guide authored

50 Comments

Any idea about the sensors? The heart rate sensor is obvious, and I'm sure there are accelerators. I think the white topped part near the TI battery charger is an altimeter. Anything else on there that anyone recognizes?

Chris Arney - Reply

Hi Chris,

Yes it's a MS5805-02BA01 pressure sensor.

I've been trying to repair a Fitbit charge and the device had a dry joint. Sadly I was unable to repair it. Bin job :(

Russell Gibb -

Could you show photos of the area where the Heart Rate Sensor is located. It is Seen clearly in Step5 - first picture. Is it a custom sensor or does it use a 3rd party sensor

Fitbit Wearer - Reply

Is it possible to replace the glass that goes over the screen?

Tim - Reply

@Tim: yes, I would like to know the same thing? Is it possible to replace a cracked screen and if so, how much is the part?

idaho112233 -

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