Thanks for your response, sorry, I wasn't very clear on the issue. So I have the detachable version, and I'm fairly sure the problem is around the mmcx-like connector. As of whether it's on the cable or on the earphone side (or maybe just the combination of the two), I'm not really sure, as I don't have a spare cable to test it. Without that all I could do to test it is to change the right earphone to the left cable and vice versa, but I wouldn't change them much as that can also damage them as I heard.
The superglue idea might be stupid, basically I just thought that since non-detachables don't have this problem, this would be a way to convert this to non-detachable by fixing the connection there with some strong glue. It might never work, or only work for a short time, I just really don't want to wait another month getting this thing replaced (which also could very well have the very same issue - since 2 out of 2 had it, I'm starting to doubt what are my odds of receiving a replacement that won't ever have this issue...), so I'm open to any suggestion about how to fix this... I like the new socket idea and the soldering idea, those might work, but those are some more serious mods that I'm not sure if I could pull off and also they might not be reversible, so if something goes wrong, I could be in more trouble. Because I don't want to void the warranty, I was looking for some quick, easy solution, if someone might have come up with something here, but I realize there's probably no quick fix for that.
0) Clean connectors from dirt, this can be the only problem you have.
1) Try to
change the right earphone to the left and vice versa, listen for the changes. Those connectors must work after at least 500 times plugged/unplugged. Try it with no fear, but remember not to damage internals of connector and rubber covering!
Changing cables and eapieces and rotating the connectors is working method that will bring you to understanding of the problem.
1.5) Try to rotate the connector and discover if there is no contact between the socket and plug or there are bad soldered cables?
a) Bad soldered cables will disconnect sound while connected to both earpieces, whether you rotate the plug. Try to inspect this with applying little force at different angles of plug. Sound cut will be present on different angles of the plug. See (3) and (4)
b) If there is contact loss between contact pair surfaces, then problem appears at some combinations/angles of the plug and at the changed earpieces configuration all can work perfectly. If connector is not damaged you need only clean it (0),(2). The contact loss can be easily distinguished when you rotate the plug and listening to sound, it will be only present on the certain angle. Just try, it comes with experience! Also it can be permanent, so try to clean the faulty place where the sound is cutting off and repeat this inspection. If after of couple of times problem did not disappear than you have (a) or the surface of connector is damaged (mostly non-curable problem, so see (3) and (4)).
2) Isopropyl alcohol can
clean connectors and they'll work fine if they are dirty or covered with glue. You can also try other cleaning tools.
There may be no damages and the dirt or glue from manufacturer can be the only problem for the connection so ispect connector side carefully and find the problem,
understanding of the issue is the most important step to cure the sound cut yourself. Also gasoline can clean connectors too.
3) So if the connector damaged and previous points are not helping, you can buy new cable, that is decision that won't affect warranty but will work only
if the cable side is faulty.
4) Earphone side - only way is the warranty exchange.
There are only few things that can broke, but it is hard to change something inside and work is somewhat nifty. Also warranty card clearly says: "The warranty does not cover earphones that were disassembled or repaired by other parties other than Vsonic authorisation"
5) Sometimes bad solder process on the manufacturer side causes the short circuit - only warranty can help if you do not want to open internals.
All recommendations are based on self experience. Hope this will help, sorry for bad English.
If warranty does not cover the cable, and the solder of the connector is faulty, you can resolder it. You'll need to cut resin, cut the plastic, resolder connectors and cover it with 5-minute epoxy glue, than heatshrink it. Here is my work: www.head-fi.org/t/669510/the-new-iem-of-vsonic-vsd-3s-impression-updated-by-smailbz/4005#post_11131942
