That would mean recharging of capacitors due to diode failures?Did they plop, plop, twice !
Exactly. What else could plop, plop twice do? Explain to me that's how I learn, it's never too late...
Well, "they simply recharged twice when the amplifier was turned off, " (your text from earlier post) - how an the rectifier diodes "recharge the capacitors" when amplifier is turned off as you write i.e. mains power is cut off?Exactly.
It is you who has some explaining to do, not me.
"what else..." - hook up a digital scope, trace the dynamics of output terminal and power rails and you will probably find the cause.
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