I’m on my second set of X3’s (warranty), having purchased them overseas (bought in US, live in UK - this makes warranty process a pain in the bum). A few months in, the new X3’s start turning off mid workout, going dead flat… Leave the X3’s a day or so, recharge and they work again until next workout.
HYPOTHESIS = The sealing on the main case is poor and sweat is getting into the electronics - I’m a sweaty dude when exercising.
Not wanting to go down the around about warranty process yet again I popped open the case using a razor blade as a wedge on the X3 to investigate. Found a salty sweat encrusted circuit board, electronics and liquids don’t mix.
If I’d opened the X3 immediately after the failure I suspect it would have been full of liquid too.
[UNOFFICIAL SOLUTION – exercise caution and do so at your own risk. This will void the Jaybird warranty]
Coat the circuit board in a non-conductive sealant, clear nail polish being the sealant of choice.
My method was as follows: (be sure to read the ‘watch out’ tips below first)
1. Prise open the case with a razor blade, one side at a time. A few of the clips snapped doing this but I knew it would be glued back together so was not concerned.
2. Clean the circuit board lightly (Google do’s and don’ts), look for built up salty residue.
3. Apply light coat of nail polish around the charging circuit board.
4. Apply heavy coat of nail polish around the headphone wire termination points at wither end of the case.
5. Apply light coat of nail polish to the main circuit board, being mindful not to cover the microphone and microswitches.
6. Apply light coat of nail polish to the inner edge of the case halves (one at a time)
7. Reassemble the case halves (one at a time).
8. Hold the reassembled main body together firmly for a few minutes while the nail polish sets.
9. Clean off any excess nail polish that had come out the sides with nail polish remover.
Watch out for:
When opening –
* minimise the risk of damage to the electronics via static discharge – i.e. wear natural fibres when working on the headphones, ‘Electrostatic Discharge ‘ Google it…
* charging cable/ribbon connecting the lower side to the circuit board, if you are too aggressive opening the case then you may rip the ribbon = end of headphones
* small rubber dots that sit in the underside of the buttons inside the case. They are quite small, easy to miss and easily fall out upon disassembly/reassembly. I missed one of the dots and only caught on when the button did not ‘click’ when reassembled, this led to a rush to get the case back open before the nail polish set.
When applying sealant –
* Use a well-lit and well-ventilated area
* Identify the no-go areas – the microphone hole, the button microswitches. Get nail polish in/on these and they will be non-functional.
* Less is more – start slow, small amounts and build up. I focused good coverage on where the wires are terminated (exposed wires), then a light coat over the circuit board and a final light touch on the edges of the casing before pushing the two sides of the case back together. If you jam too much nail polish in then when reassembled you run the risk of the microphone and microswitches getting gummed up with nail polish.
VERDICT = After applying the homebrew sealant job a few weeks back I have had no recurrences of X3 shutdown and spaz-out.
FEEDBACK TO JAYBIRD/LOGITECH = Avoid all this trouble, just encase the PCB in a sealant at the factory.
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