Blew another damn transformer on my Trane XB80
** The primary appears to be EXPLODING !!
You ridiculous ******.
Phil - your mamma should wash your mouth out with soap.
** You need to get your hands off of it.
I SAID the other two scenarios were long shots ..
** And I said they were ridiculous drivel.
- but so is everything else that has been suggested.
** Your opinion is based on your ignorance only.
The windings of the trasnformer do not
APPEAR to be overheated - looks like just blackened at the connections
between the winding and the connecting wires.
** See the vaporised metal coating deposited on the plastic cover next to
the tranny?
That is a damn EXPLOSION !!
It happened very suddenly and made a loud bang too.
I said:
" High voltage spikes on the primary could also cause insulation failure
leading to the damage seen in the pics - lightning does this sort of thing.
So also could back emfs from the blower fan if the is a bad connection in
the AC supply feed."
If the insulation on the enamel wire of the primary is punctured by a HIGH
VOLTAGE SPIKE, effectively shorting out most of the primary - then the
120 AC supply ( no fuse exists remember ) will easily turn the two exposed
wire ends into metal vapour !!!
Cos they just became the fuses.
It just so happens that many small transformers made in China, India & Sri
Lanka etc are very prone to this sort of failure - due to bad manufacturing
practices.
..... Phil
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