Quote:
Originally Posted by Stuckinda60s
A solder joint should look like part of the connection. It shouldn't have a crystalline appearance or look like it's a blob or bubble on the connection. It should look like it's melted and flowed into the joint.
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Right...should be shiny and smooth...not dull and/or porous and no hairline cracks. Cold colder joints can and do cause many problems in cheaper electronics and can be tough to pinpoint.