[sdiy] What's it take to pop a sandbar resistor?

[James Patchell]

Mechanical stress...vibration can cause some metals, like copper, to 
workharden, they become brittle, and break.

At 10:27 AM 1/26/2005 -0600, John P wrote:
>Sitting in my desk drawer is a momento of when my wife & I were first dating.
>Back then, her stereo had a problem... the speakers sounded bad.
>Opening the speakers, I found that each one had a 9.4 ohm 10 watt 
>crossover(?) resistor.   On each one, the leads had completely separated 
>from the resistor body, leaving little green dimples.  One trip to Radio 
>Shack & a little soldering later, speakers sounded *much* better.
>
>My question is, what happened to the resistors that would cause the leads 
>to fall off like that?
>Too much current to the speakers?  I don't think it was humidity, or mice 
>nibbling....
>
>--
>m/n/m/l
>surreal electronic music, sound, noise
>http://mnml.soulcatcher.net
>

         -Jim
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