If your amp used to be stable why do you think it would suddenly start arcing,
or go into
parasitic osc.? It IS possible the resistors in the parasitic chokes changed
value, and that
should be easy to change if so. Expect them to have increased in value but see
how much.
But you should also look carefully at the bandswitch because that is a
troublesome item
in that amp. Also make sure your output relay is clean. And look down in
there carefully
when it is spitting and see where it is occurring- you might just need to clean
or burnish
a plate on one of the variable caps (where it might have arc'd once when not
tuned properly
and a little burr developed.)
The issue of replacing parasitic chokes with those of a "new" design has been
debated
on this list through 1000's of postings. I happen to be in the camp that says,
"If it used
to work, just find out what changed over the years, don't redesign it."
GL, 73
Rick K2XT
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