[ale] tech "magic"

[David W. Millians]

Neal Rhodes wrote:
> Some of us old enough to remember Altos boards with 7400 series logic
> can remember that the chips would try to crawl out of their sockets at
> night, and first thing to do after blowing out the dust is push all the
> chips back down.   Glad those days are over. 

Apple ][s also, although probably with less frequency. One at school had 
to be done on a weekly basis though. Is there any truth to the 
supposition that it was the power supply that did it, when fired up?