Quote:
Originally Posted by Kamakiri
Final check: that's next.....exactly what I had planned on doing.
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Always do the tests first that are least likely to damage something.
Refresh my memory. Did you check your focus coil for internal resistance? If not do it before powering up the set.
Also, before you fire the set up, clip a DC voltmeter across R127B with the negative lead on the focus coil side.
As you bring your Variac up, when it hits 24 volts across R127B, the resistor is pulling 5 watts current draw and at 48 volts it is 10 watts and if you stay there more than a few moments you will fry your brand new 10 watt wirewound.
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One never sees their own mistakes and a prime example is the final statement in my previous post:
Sam's R127B should be RCA's R185A (and not R232 which is next to it.)
James