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Old 06-03-2025, 10:50 PM
Yamamaya42's Avatar
Yamamaya42 Yamamaya42 is offline
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Join Date: Nov 2018
Location: Round Rock TX
Posts: 3,160


Disaster..

the Flyback went up in smoke today. DEAD

I have no choice now but to try the RAM FBT
http://suzaku.live-evil.org/ramfbt.jpg

making this work in the place of this.
http://suzaku.live-evil.org/hvo-5.jpg
As there is no correct replacements.

I can find no real reason for why it burned other than it may have been damaged when it was dropped.
http://suzaku.live-evil.org/maggy-bad.jpg re-using old pic again

looking for missed bad parts again i am not finding any smoking guns, r185/185 are a bit off not bu much they are 20% parts one tests 112 the other 115, i left them in, those can't be the cause, cathode resistors are perfect.
tubes never showed any signs of stress.

I have no idea why point 1-2 burned up 2-3 is fine 4-5-6 is perfect, just 1-2-3 is toasted.
perhaps it did not like being run on 2 tubes?
any ideas?
When i do try this other FBT, i will most likely ignore the pin 4 on it and use pin 7 as if it was #4 , bypass the voltage doubler circuit, as it already puts out 13kv w/o it.
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