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Static Charge when touched

PostPosted: Sep 12th, '17, 22:14
by sharivari
Hi Everyone,

I have a Yocto 1.0 with the metal case from Erica Synths, with external 15v PSA.

The unit works great, there is no hum on the outputs, but there is one issue:

When I touch anywhere on the unit it crackles as if the whole thing is static charged. Is this the same ground problem? Could it be a bad 15v adapter? (I tried it plugged into different outlets already)

Looking forward to anyone's thoughts or advice...

thanks

Re: Static Charge when touched

PostPosted: Sep 13th, '17, 11:05
by rv0
crackling is weird,... can you make a video or audio recording?

Re: Static Charge when touched

PostPosted: Sep 13th, '17, 23:52
by sharivari
Thanks for your reply - the whole thing is static charged, when I touch it anywhere it crackles. I'll make an audio clip shortly...

Re: Static Charge when touched

PostPosted: Sep 14th, '17, 02:11
by sharivari

Re: Static Charge when touched

PostPosted: Sep 14th, '17, 07:26
by rv0
This track was not found. Maybe it has been removed — Learn more

Re: Static Charge when touched

PostPosted: Sep 14th, '17, 11:24
by sharivari
sorry it was set to private - please try it again

Re: Static Charge when touched

PostPosted: Oct 13th, '17, 10:46
by rv0
private tracks can be shared, but you need to click the share button and copy the link

Re: Static Charge when touched

PostPosted: Oct 15th, '17, 01:53
by helectromagneticus
Soundcloud is giving a "This track was not found" error when I click your link, sharivari.

My guess is that your Yocto's chassis is not well bonded to your Yocto's power supply ground. With a multimeter, try measuring the resistance between the board ground and one of the mounting screws. On my unit, which does not "crackle," the resistance is about 1Ohm between these two nodes. If that measurement looks good, try measuring the resistance between the chassis itself and the power supply ground. You may have to scratch off a little piece of the paint on the inside of the chassis to get a good electrical connection.

Hopefully this will help you resolve your problem.