How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask LOAJ3256 Your Own Question

LOAJ3256
LOAJ3256, Technician
Category: Home Theater-Stereo
Satisfied Customers: 307
Experience:  35 years in Home Theater and Systems Integrator, Senior
444199
Type Your Home Theater-Stereo Question Here...
LOAJ3256 is online now

Why is my Hi tech hifi speakers humming/buzzing when I switch

Customer Question

Why is my Hi tech hifi speakers humming/buzzing when I switch it to on position?

Please assist I need help.
Submitted: 2 years ago.
Category: Home Theater-Stereo
Expert:  Steve G. replied 2 years ago.
Hello there and welcome to Just Answer. My name is XXXXX XXXXX I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.

Now..this sounds like a powered speaker of some kind. Can you give me an actual part or model number please?
Customer: replied 2 years ago.

thanks Steve, the model - 618.


 


mobile multi media amplifier - built in mp3 player.


 


power - 30 w - 150 w


 


F/R - 38 hz - 20 KHz


 


impedance 4 ohms


 


Sensivity - 88 dB


 


A/C 220/240 V - 50/60 Hz


 


As soon as I switch the power switch on position the speakers starts humming/buzzing and you can not control it with the volume its a straight humming sound from the speakers.


The second thing I did myself was disconnect the speakers and powered the unit and there was no sound but as soon as I hooked the speakers it started again.

Expert:  Steve G. replied 2 years ago.
What else is plugged into the system? An iPod for example?
Customer: replied 2 years ago.

The system has one USB port and a SD/MMC card slot for playing music.


 


Also it has a mic 1 input port/mic 2 input port and a guitar input port.

Expert:  Steve G. replied 2 years ago.
Ok, but nothing is plugged in to any of those?
Customer: replied 2 years ago.

Yes, thats correct I do not plug anything into this ports but I use the USB port & SD card port for playing music.


One more thing I forgot is the toroid transformer gets very hot when switched on.


 


Toroid transformer - input 220V/50Hz


output 24V- ov 24 V


9V OV

Expert:  Steve G. replied 2 years ago.
I just don't have schematics for that thing. I am going to opt out of this question which will allow other electronic experts to chime in. I'm sorry.

Hold on.
Customer: replied 2 years ago.

Hi steve,


Thanks alot.


 


Who is assisting me right now?

Expert:  Rusty replied 2 years ago.

Hello, my name isXXXXX it make any difference when you plug it into a different power source? Are there any dimmers, or flourescent lights in the area? High transmission power lines?

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • LOAJ3256

    LOAJ3256

    Technician

    Satisfied Customers:

    307
    35 years in Home Theater and Systems Integrator, Senior
< Last | Next >
  • http://ww2.justanswer.com/uploads/LO/LOAJ3256/2011-12-4_22744_LAURADADJULY2011.64x64.jpg LOAJ3256's Avatar

    LOAJ3256

    Technician

    Satisfied Customers:

    307
    35 years in Home Theater and Systems Integrator, Senior
  • http://ww2.justanswer.com/uploads/FH/fhpetrone/2011-12-29_20339_DSC000292.64x64.JPG Federico's Avatar

    Federico

    Licenciate

    Satisfied Customers:

    44
    Home Theater and Automation systems integrator.
  • http://ww2.justanswer.com/uploads/JA/JACUSTOMERgy47p3k/2010-12-22_15632_brian.jpg HomeTheatreGuru's Avatar

    HomeTheatreGuru

    Engineer

    Satisfied Customers:

    30
    Home Theatre, home automation and related wiring, commercial A/V systems
  • http://ww2.justanswer.com/uploads/PL/p0llinate/p0llinate_avatar.64x64.jpg p0llinate's Avatar

    p0llinate

    Custom Installer

    Satisfied Customers:

    1052
    Custom home theater installer. Authorized dealer top brands
  • http://ww2.justanswer.com/uploads/LI/littlerusty/2015-7-13_19399_eadhot.64x64.jpg Rusty's Avatar

    Rusty

    Engineer

    Satisfied Customers:

    439
    Let my expertise help solve your technical problems. Over 20 years electronics and sound equipment experience.
  • http://ww2.justanswer.com/uploads/AR/aricaudio/2015-5-1_14910_ullizeender.64x64.jpg Aric's Avatar

    Aric

    Technician

    Satisfied Customers:

    414
    15+ years in the field. Owner of AV Installation, OEM and Repair company
  • http://ww2.justanswer.com/uploads/ST/Steve555/2013-6-14_144343_Depositphotos4247517S.64x64.jpg Steve G.'s Avatar

    Steve G.

    Engineer

    Satisfied Customers:

    323
    VP of electronic repair company.