M
mm
- Jan 1, 1970
- 0
A while back I asked about this, about a flyback transformer that
sparked from one point on it to another. And the thread turned to
whether it was worth fixing.
But I realize I never did find out why this tv transformer was
different from others. That's more important to me here than fixing
the tv, because this is just a hobby for me and I like to understand
things.
So in other cases where there was sparking I covered the area with a
layer of GE silicone sealant, or cement I think they used to call it.
And then there would be no more sparking. But this time, the spark
moves somewhere else on the flyback. I did this 5 times and every
time the spark moved, on this SONY tv. Sometimes it moved to the
other side of the transformer.
Does that indicate maybe that the high voltage is even higher than
normal? Or that the insulation of the flyback is weaker than normal?
Eventually there was more than a half inch of sealant on some sides,
and the spark moved to where I can hear it loud, but can't even see
it. Either there is a layer of air space I accidentally left (I don't
think so) or it is sparking between the layers without an air space,
or most likely, I think it is sparking between the transformer and the
circuit board.
Thanks.
If you are inclined to email me
for some reason, remove NOPSAM
sparked from one point on it to another. And the thread turned to
whether it was worth fixing.
But I realize I never did find out why this tv transformer was
different from others. That's more important to me here than fixing
the tv, because this is just a hobby for me and I like to understand
things.
So in other cases where there was sparking I covered the area with a
layer of GE silicone sealant, or cement I think they used to call it.
And then there would be no more sparking. But this time, the spark
moves somewhere else on the flyback. I did this 5 times and every
time the spark moved, on this SONY tv. Sometimes it moved to the
other side of the transformer.
Does that indicate maybe that the high voltage is even higher than
normal? Or that the insulation of the flyback is weaker than normal?
Eventually there was more than a half inch of sealant on some sides,
and the spark moved to where I can hear it loud, but can't even see
it. Either there is a layer of air space I accidentally left (I don't
think so) or it is sparking between the layers without an air space,
or most likely, I think it is sparking between the transformer and the
circuit board.
Thanks.
If you are inclined to email me
for some reason, remove NOPSAM