I am afraid I'm going to have to take issue with your comments whynotthinkwhynot. Having worked in the electronics industry for the past 30+ years, mostly in circuit board design- there is not a commercial process that I am aware of, called 'cold soldering'. Most commercial components are soldered by 'wave soldering', where the placed board is passed through a vat of molten solder, making the joints. Surface mount components can also be done this way, but they are generally 'reflowed', where solder paste is applied to the board- the component placed- then infra red heat is used to melt the solder. The vast majority of problems with circuitry these days comes from the use of lead-free solders where the high levels of tin in the solder have led to poor solder joints and the formation of 'tin whiskers' which cause short circuits.
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