Question about Polk Audio PSW250 Subwoofer

1 Answer

Polk audion psw250 subwoofer has humming noise

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,098 Answers

Humming noise on your sound is not due to your speaker but it is come from the amplifier. I've encountered a lot of this problem that is caused by the electrolytic capacitor. If you are a technician first locate for a dry joints on the board and then resolder it using your soldering iron and a high quality soldering lead. Resolder not only the capacitor but also around the output I.C.
If nothing happen then it is coming from your output I.C. sometimes it was leaky/shorted which produces a humming noise but first do the the above mentioned instructions before isolating the defective output i.c.

Posted on Jan 03, 2011

  • IF Unlisted
    IF Unlisted Nov 04, 2015

    Hey JD. Any idea which capacitor might be causing the problem here? Also not quite sure how to find the output I.C. on the board. Thanks!!

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Loud humming sound from subwoofer PSW111 (specially(noticeable once AV receiver is off).


Check the connections from your reciever to your subwoofer. It sounds like they may be a little loose.

May 15, 2011 | Polk Audio PSW111 Speaker

1 Answer

When my sub is off it hums how can i fix this


Teach it the words ;-)

"OFF"? Turned off, no power?

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Polk-Audio-RM6750-Speaker-Systems-manual/id/2771dj580/t/2/

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Feb 27, 2011 | Polk Audio RM6750 System

1 Answer

My receiver dies every time I attempt to plug in the stereo wire into the receiver (the other end is already in the subwoffer)? Is there something wrong with my receiver or am I not hooking it up...


your sub woofer is partly shorted check the output transistor of your sub woofer before pluging to the receiver or this will damage your receiver

Dec 24, 2010 | Polk Audio PSW250 Subwoofer

1 Answer

My Polk PSW 303 subwoofer emits a hum when plugged in and powered off. When the unit is turned on the hum gets louder. At this point the unit is useless. Does anyone know what could be causing this?


Hiya sounds alot like there is a power supply issue with the unit that will require repair for it to be doing off or on. Probably wont be to expensive, request a quote first to make sure viable.

Best of luck

Jul 16, 2009 | Polk Audio PSW-303 Subwoofer

1 Answer

Polk Audio PSW202


The power supply or amplifier has a shorted component.

Nov 08, 2008 | Polk Audio PSW250 Subwoofer

1 Answer

Loud hum on subwoofer.


try another speaker on that channel if you get no sound or it hums then it is time to take your set to a tech your audio out put on that side is damage along with some caps.good luck.

Mar 30, 2007 | Polk Audio RT1000I Speaker

Not finding what you are looking for?
Polk Audio PSW250 Subwoofer Logo

906 people viewed this question

Ask a Question

Usually answered in minutes!

Top Polk Audio Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5011 Answers

The Knight
The Knight

Level 3 Expert

73611 Answers

ed_dantes

Level 1 Expert

7 Answers

Are you a Polk Audio Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...