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

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    detoxer

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    Join date : 2011-08-17

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    Post by detoxer on Fri Aug 26, 2011 8:06 pm

    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?
    Westy56
    Westy56

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    Join date : 2011-05-09
    Location : Albuquerque

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    Post by Westy56 on Sat Aug 27, 2011 11:23 am

    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. Laughing Just kidding.
    Where is the buzz coming from?



    Steve
    Sal
    Sal

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    Location : Central New Jersey Dynaco-ST70.com

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    Post by Sal on Sat Aug 27, 2011 11:33 am

    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
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    detoxer

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    Post by detoxer on Sat Aug 27, 2011 12:24 pm

    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?
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    detoxer

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    Post by detoxer on Sat Aug 27, 2011 5:00 pm

    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.
    Captain Coconut
    Captain Coconut

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    Post by Captain Coconut on Sat Aug 27, 2011 7:43 pm

    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! Rolling Eyes
    DynakitParts
    DynakitParts
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    Post by DynakitParts on Sat Aug 27, 2011 10:30 pm


    Captain,
    I like your sense of humor...

    Kevin

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