If your Fitbit Versa 4 gets damaged by salt water, here are some steps you can take to try and salvage it:
1. Immediate Action: Stop using the device immediately. Do not attempt to charge, sync, or turn it on, as this can cause further damage due to the corrosive nature of saltwater[1][2].
2. Dry the Exterior: Gently pat the exterior with a soft cloth to remove any visible moisture. This is crucial to prevent further water ingress.
3. Disassemble the Device: If you are comfortable with disassembling electronics, carefully take apart your Fitbit to access the internal components. Be cautious, as this may void any warranty and requires technical expertise.
4. Clean with Isopropyl Alcohol: Use 90% or higher isopropyl alcohol to clean the circuit board, connectors, and other components. Repeat the cleaning process several times to ensure thorough removal of salt residue. Be careful not to soak any rubber parts, as alcohol can damage them[1][2].
5. Use an Ultrasonic Cleaner (Optional): If available, an ultrasonic cleaner can be more effective at removing salt residue from the components.
6. Replace the Battery: Once the device is thoroughly cleaned, consider replacing the battery to prevent any potential corrosion issues[1].
7. Reassemble and Test: After cleaning and drying, reassemble your Fitbit and attempt to turn it on. If it still doesn't work, the damage might be too extensive.
8. Contact Support: If your attempts fail, contact Fitbit support for further assistance. However, note that water damage is often not covered under warranty[7][8].
9. Preventive Measures for Future: Always rinse your device with fresh water after exposure to saltwater to reduce the risk of corrosion. Avoid using it in conditions that exceed its water resistance specifications[2][7].
Citations:[1] https://www.ifixit.com/Answers/View/840736/Dead+after+swimming+in+the+sea
[2] https://www.reddit.com/r/GalaxyWatch/comments/uqjbwy/how_f_up_is_this_my_gf_accidentally_dipped_it/
[3] https://community.fitbit.com/t5/Other-Versa-Smartwatches/Fitbit-Versa-water-damage/td-p/3173013
[4] https://community.fitbit.com/t5/Other-Versa-Smartwatches/Versa-not-turning-on-after-swimming-in-the-ocean/td-p/3400154
[5] https://www.youtube.com/watch?v=PoqoUmtpoBw
[6] https://media.rinnai.us/salsify_asset/s-bb57a000-5f48-4159-ac3c-47e47f8180f7/100000467-N%20Series%20Residential%20Condensing%20Installation%20and%20Operation%20Manual.pdf
[7] https://www.reddit.com/r/fitbit/comments/127tj7b/fitbits_are_not_water_resistant_despite_what_they/
[8] https://support.google.com/googlepixelwatch/thread/264641258/water-damage?hl=en
[9] https://www.reddit.com/r/fitbit/comments/12nb78k/water_damaged_fitbit_sense/