More data on dead wall wart - test-drb@ccmp.vtda.org

9 Dec 2004

...
 From: "Fred Cisin"
&lt;cisin(a)xenosoft.com&gt;

  > One year, at the West Coast Computer Faire,
we repaired
 > 5 TRS80 ones for other exhibitors ('spose the flaky power
 > at Brooks Hall might be responsible?).
 > We opened them by flinging them down onto a carpeted concrete floor. 
On Thu, 9 Dec 2004, Tom Jennings wrote:
  Shag, berber, or ...? 
It looked like cheap commercial grade indoor/outdoor.  But you could
probably get full specs from Greyhoud Exposition Services - just
don't trust anything that they say - at the time, they also claimed
that it was anti-static.

Fortunately, all 5 were just blown fuse, the common failure of those
warts.

Hi
 I've seen two types of failure for non-fuse warts.
One is that the primary wire blows on the top of the
primary winding but there is other visual damage.
This is almost always fixed by simply jumpering a new
piece of magnet wire ( should be the same guage to
provide proper protection ). The other is that
there has been some obvious over heating of the
primary wire. These are always fatal.
Dwight