Quote:
Originally Posted by Schanz
Could be that you need to replace all the caps first. I don't know that the smaller down stream caps can heat your transformer like that but I'm no expert by any means.
I put mine all together last night finally but when I turned it on I heard a small electrical arc. Uh oh. I found one my 22uf electrolytic caps had come loose from the ground. Repaired the solder but now the sound is gone. Replaced that cap but that didn't fix it. Voltages at the rectifier are fine. All tubes light up but my b+ voltage is missing farther down the circuit if that makes sense. Haven't had time to investigate much yet. Frustrating.
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Make sure that both electrolytics don't go to ground. The C-25 negative goes to the center tap of the transformer and speaker field as the choke and forms the bias supply for the 42 tube. It could be that the R-13, 235 ohm resistor opened. As a result of this resistor opening, there won't be any B+ to the rest of the set, not even a hum. They usually used those flexible type resistors. Replace with at least a two watt wire wound resistor.