Hum From Power Transformer Normal?

Spongebob666 · 8th January 2019, 09:34 PM

Just got the SSE fired up a few days ago, it sounds great. I’m getting some hum from the Edcor power transformer, don’t hear it at the speakers, just when standing over the amp with no music playing. Hum does not bother me, just wanted to see if this is normal or something I need to be concerned about, don’t want to fry the transformer. Thanks in advance for your help.

Tubelab_com · 9th January 2019, 12:59 AM

It is probably normal. If you have the correct fuse (2 Amp for US 120 volt power, 1 Amp for 230 or 240 volts) I wouldn't worry about it. Try tightening the 4 bolts that hold the covers on. They also help keep the laminations tight.

Spongebob666 · 10th January 2019, 12:13 AM

Good deal, thanks George. Amp sounds great, really excited to get it up and running!

8th January 2019, 09:34 PM	#1
Spongebob666 diyAudio Member Join Date: Jan 2018	Hum From Power Transformer Normal? Just got the SSE fired up a few days ago, it sounds great. I’m getting some hum from the Edcor power transformer, don’t hear it at the speakers, just when standing over the amp with no music playing. Hum does not bother me, just wanted to see if this is normal or something I need to be concerned about, don’t want to fry the transformer. Thanks in advance for your help.

9th January 2019, 12:59 AM	#2
Tubelab_com diyAudio Member Join Date: Jul 2005 Location: West Virginia panhandle	It is probably normal. If you have the correct fuse (2 Amp for US 120 volt power, 1 Amp for 230 or 240 volts) I wouldn't worry about it. Try tightening the 4 bolts that hold the covers on. They also help keep the laminations tight. __________________ Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......

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10th January 2019, 12:13 AM	#3
Spongebob666 diyAudio Member Join Date: Jan 2018	Good deal, thanks George. Amp sounds great, really excited to get it up and running!