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Message: <blockquote data-quote="kross" data-source="post: 3222287" data-attributes="member: 577729">Solder has a much higher resistance than copper.  If the copper wire doesn't make direct contact with the metal tab, but is only embedded in the solder that's already on there, that won't be the most efficient connection.Just get some solder removal copper braid, only costs a couple bucks at the rat shack, and take the old solder off.  Then try to make as good a connection with the wire as you can on the metal tab.  Then add solder to hold it all together.  Of course, make sure the solder "flows".  No cold solder joints, please!  And be quick about it, don't melt anything inside!</blockquote>

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