rec.arts.theatre.stagecraft

Torrance Bell wrote:
> I'm kind of curious as to what might have made it asplode in the first
> place. Was the transformer just old, or might there be a screw rolling
> around in it somewhere?
>
> Torrance

I think the tranny just up and died. All the components are reverse
mounted on the underside of the panel, so nothing rollig around could
have done anything.

But the real problem AFAICS was that someone had put in a much larger
fuse than called for, so when the tranny shorted it pumped lots of power
into the power resistors which simply flambéed. I replaced the tranny
and the power resistors, put in 1 amp fast blow (instead of the 2 amp
slo-blow), and it came back to life.

When replacing the tranny I did notice that it had been replaced once
before at some point in the past.

I originally had to get the board up and working for an event this
evening, but, as is so often the case, no one bothered mentioning the
last minute event on Wednesday evening. So it got a good test workout
last night.