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Re: question on power supply

Thanks so much guys, actually tried to add more capacitance on the power supply today, still hum.

When the volume at 0, the hum is very little and hardly audible unless I really get my ears next to the speak, but when I turn the volume to max, the hum get louder, and the tweaters make this boiling sound - same for both channel. Would this be a bad solder joint somewhere? where is the place to start the trouble shoot?

tks.


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