Midiland speakers has no power input point how to power them

I have no way to look that up for you.

The humming noise could be a earth loop problem.
This is caused by having the speakers/sub woofer connected to one power point and the computer connected to a different power point.
To eliminate earth loop problems, connect both the speakers/sub woofer and computer to only one power point. Connect all your equipment to one power point using a power board.

You may have an earth loop problem. This is caused by connect various equipment to different mains power outlets.
Connect all the PCs, audio and speakers to a single mains power outlet, use a power board so they are connected to the one mains power outlet.
I suggest you use a power board that has a built-in surge protection.

Ebay,

Mike, I have the exact same issue. Did you have any luck resolving this?

Thanks,
Jim

Unstick your capslock key if you want someone to actually read your post...

Hi evtan

The only thing I can suggest you do is to swap the right and left inputs to the transmitter base over whilst wearing the headphones. If the fault transfers to the other channel, then you have a faulty interconnect lead that needs to be replaced. If it stays with the same channel, then the headphones or the base staion will be faulty. Best bet then is to return it to the place you purchased it from and request a replacement unit,. Thanks for using FixYa....a FixYa rating is a great reward from you to me for helping out :) Cheers

regards
robotek

Hi,Can you tell me the power supply (AC adapter) requirements for Midiland MLI 747 - 4.1 speaker system?

At this point, you might just want to look at it again and worst case senereo, you mess up the face of the speaker to get inside, Since it does not work, and its not one of those speakers that you normally send out to fix. It is a throw away item. This is why they don't want to deal with you. Cheap speakers are anything under 300, and usually cost more to send out.

12 v 500 ma. Let me know if you need one but you can probably get something at your local Radio Shack.