You don't HAVE to solder it. I just used a little tip of instant adhesive (superglue) and everything is working for over 2 years now. Just use a really tiny tip of glue and be sure to only use the adhesive on the non metal parts of the socket and the logic board. The glue I would recommend is made of cyanoacrylate and has a super thin surface once dried. If you are lucky, the connectors are hold together enough so that the power can run through again. Be VERY careful with this glue because it dries almost instantly and is extremely sticky. Don't spill it on your fingers or other parts of your body.