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May 31, 2014 at 11:59 pm #111663owen33Member
My H9 hums when powered. Is this normal? It's really loud on power up but there is still a hum coming from inside the pedal. Its not in my guitar amp chain, it's the pedal itself… just sitting powered on making a slight hum.
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June 1, 2014 at 1:12 am #126027gkellumParticipant
No, that's not normal. You're powering it with the Eventide power supply? Does it sound like it could be a ground loop?
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June 1, 2014 at 2:11 am #126028owen33Member
Powered with the eventide supply. That is the only thing plugged in. No guitar or amp. It makes a hum noise like you would expect a tube amp's transformer to make. It works fine but something internal in the pedal is making the noise.
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June 1, 2014 at 2:13 am #126029owen33Member
Using the supplied eventide wall wart. That is the only thing plugged in. No guitar or amp. Its something internally in the pedal humming. Like a transformer would hum.
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June 1, 2014 at 2:22 am #136746
Hum is usually a ground loop. If the H9 supply and amp are plugged into different power strips or outlets and the grounds aren't solid you could hear hum.
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June 1, 2014 at 2:29 am #126030
We haven't run into this before. If the pedal itself is humming please send an email to support@eventide.com.
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June 2, 2014 at 4:02 pm #136749
Is the USB plugged in ?
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June 2, 2014 at 6:12 pm #136753owen33Member
No, just the power plug, no usb, no 1/4 in plugs to guitar or amp, nothing else plugged in to the power strip. On power up it's a loud hum followed by a click and then a less noticeable hum.
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June 2, 2014 at 6:55 pm #136756
I think we all misread your posts, and figured that the hum was heard at the amp, whereas you are saying that the pedal ITSELF is humming.
This must be a hardware problem, probably in the internal power circuitry, so you should contact support@eventide.com. Sorry.
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June 20, 2014 at 4:06 pm #136854doombie22Participant
i get it sometimes with my usb plugged in
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June 21, 2014 at 1:49 am #136856
doombie22:
i get it sometimes with my usb plugged in
This will be a different thing, probably a ground loop. Try and make sure that everything connected to your H9 (including your computer and monitor) are plugged into the same power outlet.
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