#MACBOOK PRO POWER CORD HUMMING HOW TO#
#MACBOOK PRO POWER CORD HUMMING MAC#

Technically you could hack the not grounded 3 prong UK (Type G) adapter (that I mentioned before) to connect the ground prong to the grounding pin as shown in this tutorial. The metal is more visible in the magnified picture on the right.

The left picture from this answer shows the difference. So at Apple, the rule of thumb is that if it is an extension cord, then the socket is connected to the ground pin so it is probably grounded, if it is the small adapter, then there is no connection in the socket so no grounding for you: You have to carry that extra 1.8 meter of cable tho. This is a 3 prong UK plug that has a grounding prong, but they haven't connected it! Fortunately at the extension cord there is a connection. Obviously a 2 pin/prong plug is not grounded, you'll need one with 3 of them, but even in this case you have to check if the adapter's socket/shoe has metal in it (AKA is connected to the ground), because you can't take that granted at Apple! Just check out this picture from this article: The charger can be grounded because the metal pin that holds the adapter is (subtly) also the ground: I have on occasion intentionally grounded one of the plastic feet with foil when I am waiting for the electrician to fix an outlet or I am working in a location where I can't get a proper ground. 3) Release the power button when you see your MacBook Pro start up. 2) Press and hold the power button for 10 seconds, then (donРІР‚в„ўt release the button) plug the power cable back into your MacBook Pro. To do this: 1) Remove the power cable from your MacBook Pro. This sort of ground current drives me nuts (even though it's normally totally safe). This is an effective fix for your MacBook Pro not working issue.

#MACBOOK PRO POWER CORD HUMMING MAC#

You'll have to check with an electrician or take your mac to another outlet that is known to be properly grounded if you are already grounding it through the wall if you still feel the tingle with a grounded cord. You shouldn't be able to feel any tingle due to you being better grounded than the mac if your outlet is properly grounded. The adapter article from Apple has some good tips and a nice picture. (Or unearthed to some) Use a three conductor plug to ground the device and check your MagSafe pins to be sure they extend fully and mate correctly with the Mac. In the US, standard power means the 'duck head' two prong connector is ungrounded. I'm thinking about getting a hum remover like Cleanbox II but I was thinking that maybe I should get a USB to Midi cable and run the midi through my audio interface.Your specific mac only grounds itself through the magsafe connector if you are using a grounded plug. It helps but the hizz is still way too loud. I tried to connect my entire setup to the same power plug and also to run the laptop on battery.

#MACBOOK PRO POWER CORD HUMMING HOW TO#

I just don't know much about this stuff and how to fix it. When I remove the USB I can record with no noise at all.Р”Р„ccording to the research I did it's likely a grounding issue.

The noise appears when I want to record the audio from the keyboard while still having the USB cable plugged in. My audio interface is a Saffire 24Pro that runs via firewire. (Macbook Pro) My keyboard only has USB - not midi out. I get a loud humming noise when I connect my keyboard to my laptop. Actually, this problem gets really bad, when you connect a 3.5mm plug from your headphones to your MBP, you can hear the buzz from the electricity, I must unplug the MBP from the electrical outlet to avoid that buzzing sound (which is realy high and loud), I must find a way to ground the laptop, I have found that if I touch it it reduces the amount of buzzing sound, so I will connect a cable from the body to some sort of metal to see if that helps, until i found a longer solution.

Macbook pro power cord humming