Quote:
Originally Posted by Tubejunke
...Again, from the get go the color took maybe five minutes to come in, but when it came in it was fine.
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Uh-oh, my bad. I missed that statement, but found it upon re-reading the thread.
Sure sounds like like the 3.58 oscillator tube was slow warming up and finally not starting at all. Do you have a known good sub for it?
Quote:
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..I thought for sure that it was just a weak tube that was taking longer than others to achieve enough emission to do its job. Each time I powered the set it seemed to take longer and longer, till no color at all.
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Here's assuming the problem
is a weak 3.58 oscillator; with the color killer full 'on', you'd see barberpoling gradually straightening up until the color finally locks in.
(An analogous situation would occur with a weak horiz. oscillator. A good working test for the H. oscillator is to turn the set off for ten seconds or so, and then back on. If it takes a while to lock back in, the tube is borderline weak even though it may show good on a tester.)
Speaking of horiz. stuff, the 'efficiency' coil does not affect horiz. sync. But if mistuned, will cause high HOT current. It needs to be tuned for the 'dip' of minimum current.
Bill(oc)