Question about Boston Acoustics MCS 100 Speaker System

Open Question

Hello, I have a boston mcs 100 system, and the subwoofer started humming, I pulled the panel off and two resistor looking things fell out. Is this a situation where I can buy a new panel, or should I just start looking for a new sub?

Posted by on

Ad

6 Suggested Answers

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

Ad
  • 1 Answer

SOURCE: Loud humming noise from subwoofer

if it is a powered sub you should lift the ground. you can do this by adding a three prong to two prong adapter. you know, like when you go to plug something in and the cord your plugging in has three prongs and the outlet your plugging in to only has two. it doesn't have the hole for the ground so you go get a little grey adapter that has three holes on one side and two prongs or tabs on the other.if that doesn't take the hum out (actually, is keeping the hum from getting in) you have a problem with the amplifier.

Posted on Jan 27, 2007

Ad
  • 8404 Answers

SOURCE: want to connect Boston BA745 subwoofer to home theatre system

Is your question :"Is it possible to connedct a set of speakers to my PC"? Yes it is possible. Anything is possible, my friend!

Your speakers look like mine though I have not checked the model number. If you have a mini banana stereo plug on the speakers, plug it into the same coilor jack on your PC. You will need a power supply of appropriate sized. connect the little speakers as appropriate and you should be in business.

let me know what happens

a

Posted on Sep 22, 2009

  • 1 Answer

SOURCE: Boston BA790 Subwoofer Making Strange Noises

I just took my sub apart and found that the surround on the driver speaker inside the sub was totally crumbled and lying in pieces throughout the sub box.

I'm looking around now for specs on the sub speaker so I can find a replacement.

Posted on Feb 15, 2010

  • 174 Answers

SOURCE: humming sound when plug into power. not hooked up to computer

Sounds like bleed from other cables. Run your audio away from other cabling such as power. It also may be from a cheap power strip or another device sharing a cheap power strip with the speaker system. Lastly, it's possible it could be coming from you sound card, so try another set of speakers (or headphones) to see if it's coming from inside the PC.

Posted on Mar 18, 2010

  • 1 Answer

SOURCE: Re: Boston digital BA735. Hum with or without input signal.

Hmmm I just got the same problem. They worked fine on my old Dell desktop but when I plugged them in to my son's old Dell PC (maybe 1 year newer than my old one) they all hum like crazy - as you say even if it's just the power plugged in and nothing else. Yes it does have the original power supply. I get no music (but still it hums) from digital out/in but when I switch to analog out/in I hear the music and it still hums, plus the sound is distorted. Wierd.

Posted on Jul 22, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do you repair blown Boston Acoustics Subwoofer MCS Amp?


Most often this unit goes dead because of zener diode ZD3 shorting. It is a 18v zener. replace this and you should be back in business.

Feb 20, 2017 | Boston Acoustics Audio Players & Recorders

1 Answer

Fixing an humming subwoofer


Filter capacitors in the amplifier or a broken ground (shield) wire. Check if there is a ground lift switch in your system and try it in both on and lift positions.

Aug 30, 2016 | Boston Acoustics Horizon MCS130 5.1 10in...

1 Answer

Loud humming sound


Make sure that the input connection ground is good. If that does not cure the loud hum then you have a power supply issue.

Oct 27, 2015 | Boston Acoustics Boston Acoustic Micro...

1 Answer

Why does my MCS sub 10 not turn on?


Is that the right part number, MCS 10, and not MCS100?

The MCS systems use a basic sub which is matched to the satellites. There's very few controls other than level on the MCS100. So as long as the power light is illuminated the there's very little other than the volume control that could be set wrong on the sub. So what it comes down to is either

  1. a blown fuse (no power at all at the sub);
  2. a broken input (#1 cable, #2 sub input socket, #3 blown sub plate amp);
  3. incorrect connection at the receiver end or the wrong settings

As a quick test, unplug the sub cab from the amplifier/receiver end. Switch on the sub and turn the volume down all the way. Briefly put your finger across to short the RCA/phono tip and ring. The sub should make a buzzing sound. You now know that the sub is working and the cable appears to be okay

Switch off the sub and reconnect the phono/RCA to the sub out socket on the receiver. You now know it is connected correctly.

Go in to the receiver's menu and check the speaker settings. Is subwoofer present? Yes/No

Are the satellites all set to Small? (they should be with this system)

Are you playing a 5.1 source in DD or DTS to ensure that the sub gets a signal? Play a BD or DVD.

On the speaker balances, is the sub channel set to 0dB?

As long as all the above is set as listed, then the only things stopping the sub working would then be insufficient volume at the sub's Vol control (so increase it), or an intermittent cable connection (wiggle the cable), or a broken subwoofer out signal at the receiver.

Aug 06, 2014 | Boston Acoustics Audio Players & Recorders

1 Answer

Subwoofer not working


There may be an internal fuse that's blown. I'd take it to a repair facility and have them check it. Could also have a bad connection inside. Good luck!

Feb 15, 2014 | Denon DHT-1513BA Home Theater System

1 Answer

MCS 160 Boston Subwoofer ZD3 Zener Diode Value


ZD3 is a 18v zener. Also check the surface mount resistor on the back of the board that is attached to ZD3, I think it is R9. Should be 10 ohms. This resistor sometimes opens when the diode goes short.

Jul 13, 2013 | Audio Players & Recorders

1 Answer

Avr 1513 no signal to subwoofer


Check its speaker connections. Check the speaker using a dry cell. If it is found OK, check the sound settings. If you wish to get more details, check this link.

Mar 22, 2013 | Denon AVR-1513

3 Answers

Mcs 160 subwoofer no power


I had the same problem with my subwoofer unit. I found the zener diode ZD3 was fried. The pic below shows the diode and its clearly tagged ZD3. You need a multimeter to check this before you order anything. This diode should only transmit power in one direction. Its size and spec is 18v .5w zener diode. (that's 1/2 w) It's very inexpensive and the whole repair took about an hour. This is from a Boston Acoustics subwoofer MCS 160
Ok..the procedure is easy.
1) unplug the unit and bring it to a well lit work area.
2) remove the panel from the back and locate the board that is held to the panel by 4 screws and has the ZD3 diode. The pic below shows the diode at the end of my test lead. Note the direction of this part and reinstall the new one in the same direction. Its a simple de-solder and re-solder project. I elevated the new diode about 1/8 " from the board with a small strip of copper. This acted as a heat sink during the soldering and elevated the part above the board to help it dissipate heat later when in use.
3) re-install the board and plug in all the connections.
4) this worked for me and I'm enjoying my sound system again!..good luck0482b949-8492-43a6-91df-0fb2f0e6888b.jpg

Jul 24, 2012 | Denon Audio Players & Recorders

1 Answer

How can I take apart my Boston Acoustice MCS 130 speaker. It was dropped and now does not work. I want to look in it and see if I can repair it.


there should be panels or rubber feet with screws underneath. or the speaker part can come off. that would be where the mesh would be or holes for the sound to escape.

Dec 12, 2010 | Boston Acoustics Audio Players & Recorders

1 Answer

Annoying humming sound coming from subwoofer...


The humming sound usually comes from the DC supply that is not filtered. The a/c converted or changed to DC needs to be "cleaned", before going into the ckt. Usually the capacitor and resistor network go bad, maybe causing the fuse to open. Even if you replace it, u may still have the "humming" because the circuit is still bad.
If you know how to look at the capacitor, resistor,or coils AFTER the diodes & replace the damaged part, u should be good!

Mar 02, 2008 | Boston Acoustics MicroMedia Computer...

Not finding what you are looking for?
Boston Acoustics MCS 100 Speaker System Logo

Related Topics:

94 people viewed this question

Ask a Question

Usually answered in minutes!

Top Boston Acoustics Audio Players & Recorders Experts

The Knight
The Knight

Level 3 Expert

74198 Answers

 Grubhead
Grubhead

Level 3 Expert

5113 Answers

Steve

Level 3 Expert

3287 Answers

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

Answer questions

Manuals & User Guides

Loading...