Keyboards minature plug requires soldering

HI All I have a White Macbook 1.83ghz version where it looks like the Keyboards minature plug requires soldering back in. Is this practical and will it make the keyboard funcional again? Many thanks GArry

Almost nothing on a MacBook is soldered directly to anything else, except maybe the CPU and GPU. Virtually everything else is designed to be replaceable.
But assuming you managed to separate a cable that was permanently affixed to some other part, then generally no, it's not worth trying to solder it back on. You just get a new part with that piece still attached and don't do whatever it is you did to cause your current situation.
And you certainly do seem to have a lot of issues with this system. Might just be time to admit that keeping it going is taking up too much time and getting to be too expensive.

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