There's a tutorial elsewhere online with lots of pics , if you google the phrase below you will find it:
Tutorial - Sealing Connection Pin SXK BB USB Version
I was happy to pull my covers off because I was inquisitive to have a look inside and make sure it actually had a DNA60 in it, and I wanted to check out the build quality... If you're not game to take the covers off you "may" be able to lift the pin insulator up enough to seal it with a pin/needle or tiny screwdriver poked under the edge of the insulator, then put sealant around it and poke it back down...
My insulator was a loose fit but the positive pin was firmly stuck in the insulator and I didn't want to risk breaking it trying to force it out to seal it, I suspect the pin was melted into the insulator when the wire was soldered on, so I put sealant around the insulator then poked it back into the housing, and then put a bit of sealant around the bottom of the pin where the wire connects just in case
juice managed to go between the pin and insulator, I don't think that was really necessary because the pin was so firm in the insulator, but I'd like to get many years use out of it... (others may be different)
also, I like silicon sealant because if you ever need to get it apart it breaks away quite easy, unlike most other glues and such... You can get "natural cure" silicons that don't stink...
Photo stolen from the tutorial:
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