"Sylvia Else"
** Dead wrong - as usual.The term "dry joint " is commonly used in electronics to refer to all manner of cracked and heat damaged joints made with solder. Fractured or heat fatigued cracked would be better descriptions but " dry joint "is the one most often used.
These defects develop as the result of time, high temperature, vibration and thermal cycling of the device.
Electronic components and all the fancy devices made from them begin deteriorating from the minute they are made - so, in that sense, the seeds of self destruction are *ALL* built in at the factory.
Makers are not obliged to warranty against the consequences of this.
......... Phil