> Yes, it sounded like a gunshot when it blew.
In the 70's I did consulting work and handled overflow from
a few utilities voltage investigation units.
While it has been many years ago, the most common cause of
"big bangs" and light blinks after a lengthy period of noise
was when lightning arrestors on the primary would fail. What
would generally happen is the arrestor would either explode
or the wire to the arrestor would vaporize.
Other things would keep right on working.
On a rare occasion the surge to ground would damage other
things on the pole, but that wasn't very common. Most of the
open telco boxes I've seen were sloppy worker faults. I can
show you a half dozen open telco boxes within a few miles of
me, and there are probably only a total of 50 or 100 in this
I never saw any dropped lines but of course that wasn't the
nature of what I did. I handled occasional overflow or
difficult to find noise problems. I got roped into it
because I constructed and serviced some of the noise
locating gear a local utility used, and then my name went on
a few walls. Since I was looking at noise problems, I'd see
things like lightning arrestors on the edge and on a rare
occasion see the aftermath of a noise problem that resulted
in a "big bang" conclusion.
Whatever the noise was I agree with everyone else, the boxes
are the LV telephone line boxes. If they exploded it wasn't
really their fault!
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