Hi there. I’m so lucky to have found this thread. I have the same problem with my e250. Its the bottom right connection that is loose as well. The metal part from the jack has a solid hold on the solder on the board below it, but its the solder itself thats become loose from the board. I’ve never soldered before, but I think I could take it on. Would it be better to melt bit of solder directly on the board, under the loosened solder, or use a conductive adhesive? I’d appreciate any advice.
If you’ve never soldered before, try practicing with some wires or something. The biggest issue here is that generally you hold the solder iron to the two pieces you’re soldering and then add solder. DON’T DO THAT here. IT will melt the board and/or the chips on the board.
I would NOT try to melt anything under, but if you get a “desoldering wick” you could carefully remove the solder from the tab on the headphone jack- then just solder that to the board.
Maybe take it to a TV or computer repair shop and ask if they do small soldering- if so, they should be able to fix it in just a couple minutes…