One more experiment needs to be performed. If it is just heat, then
preheating the transformer with a hair dryer to 130F or so (allowing
enough time for the heat to reach the core) should make the unit
fail to start or quit in a very short time.
--- In TekScopes@..., "Larry Christopher"
<tektronix@t...> wrote:
A few days ago, I suggested using a small fan to keep the 547 HV
transformer cool and see if it would stave off failure of the HV
supply. Gary has tried it, and here is his reply. The bottom line
is
that it worked, tentatively establishing that this is an
overheating
problem, and that it can be cured by cooling. Read on....
Larry Christopher
Larry,
Heat is the problem, coupled with a deteriorating HV transformer.
Since new, or even re-wound transformers are not available I
performed a bit of an experiment with a less eloquent solution but
obtained very promising results:
