1-2 second buzz when applying power to cold st-70

This is a brand new vta st-70 that functions beautifully except when power is applied when cold,I get a 1-2 second buzz, I think from the power supply? Any suggestions?

detoxer wrote:This is a brand new vta st-70 that functions beautifully except when power is applied

Sounds like you should leave it unplugged. Just kidding.
Where is the buzz coming from?


Steve

Probably just the initial magnetic field surge happening to the power transformer, did you install isolating rubber washers under the power transformer screws that might eliminate the vibration?

Sal

Yes there are isolaters installed, It is definitely the initial power surge that causes the buzz but I didn't have this problem the first 10 or 15 times I turned on the amp. Is this normal?

Thanks for responding Sal, I have determined what the problem was, seems the power strip I was using could not handle the wattage of the amp. Plugged the amp in on a dedicated outlet and she works flawless,went ahead and trashed the strip. Thanks again for your input.

detoxer wrote:This is a brand new vta st-70 that functions beautifully except when power is applied when cold,I get a 1-2 second buzz, I think from the power supply? Any suggestions?

If you're only getting a buzz for 1-2 seconds, you may want to try smoking something else!

Captain,
I like your sense of humor...

Kevin