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Re: Heathkit AA-1800 power transformer + serial number

Posted by Chris on 7/27/2005, 3:55 pm, in reply to "Heathkit AA-1800 power transformer + serial number"
138.88.180.4

If the hum is audible in the speakers the transformer is not at fault. The only hum a transformer could make is mechcanical (laminations vibrating). Hum in a amplifier is almost always diodes and/or capicitors in the power supply. I don't know how Heath assigned serial numbers. All I can say is I ALSO have serial number 9!

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Message Thread: Heathkit AA-1800 power transformer + serial number - Andrew 4/30/2005, 7:23 pm Re: Heathkit AA-1800 serial number - Gabriel 10/31/2007, 11:31 am Re: Heathkit AA-1800 power transformer + serial number - Chris 7/27/2005, 3:55 pm Re: Heathkit AA-1800 power transformer + serial number - rrcrain 12/16/2005, 1:35 pm Re: Heathkit AA-1800 power transformer + serial number - rrcrain 12/17/2005, 9:40 am « Back to thread

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