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Completely different problem now

With all new caps, resistors, and output tubes, I now have a new problem: When I re-attached the amps to the speakers, and with no input signal, after turn-on I now hear about 20 seconds of silence, then about 10-20 seconds of white noise, then about 20-30 seconds of low level buzz, then white noise. At that point, I shut down the power.

Because of the time delay after turn-on, during which there is silence, I am guessing that one of the NOS power tubes is simply noisy. To test that, I will remove and replace them with four more NOS tubes. (I have a stash.) I suppose the good news is that the repetitive clanging noise that I was hearing originally, followed by the fuse blowing, is gone, and the fuse does not blow. Also, I now sense that the original metallic clanging noise was coming from the amplifier not the speaker. The hum and white noise now are coming from the speaker for sure.

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