Question about Jamo MPA201 2-Channel Amplifier

3 Answers

Two Jamo MPA-101 amps not working

I picked up a couple of Jamo MPA-101 amps the other day. The Blue power light comes on with both of them but no output. I have removed the covers and checked the only fuse I can find. The fuses on both amps are good. What should I do next? Thanks. Lee Jacobsen 804-462-3246

Posted by on

  • 1 more comment 
  • NHTC40D Jan 20, 2009

    I have the same problem. It appears as though it is on, but not sending any power to the speakers. The fuse does not appear to be blown.

  • Anonymous Apr 13, 2009

    same problem, i have two of them and when i switch to the other one the speakers work.

  • Scott Frye
    Scott Frye May 11, 2010

    HI....
    Do you have good speakers connected when you turn them on?
    Are the amps in bridged or stereo mode?

    Here's their link

    http://www.jamo.com/Default.aspx?ID=1424...


×

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 4 Answers

I can almost guarantee that you'll find bad electrolytic caps on the power supply board to be the cause of the problem. I've seen several of these with the same problem. The protect circuit stays latched due to excessive ripple.

Posted on Aug 14, 2009

  • John McCutcheon Apr 20, 2012

    So how do I get it fixed?

×

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

I replaced all of the caps in the power supply section and it fixed this amp.
I own Spectrum Electronics , 727-289-9746, I work on all makes and models.

Posted on Jun 06, 2012

Ad
  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

I'm probably too late. Check to see if your amp is in "Auto" mode, this is automatic turn-on when it sees input.

Posted on Oct 07, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

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

Where on my mixer should I plug the subwoofer into? Or would plugging it in somewhere else be better ?


This will depend on whether your sub-woofer is powered (has it's own built in amplifier) or not. If it is not powered it will need connecting to an amplifier. If it is powered you will need a line level output either on the amp or the mixer.
Many modern amplifiers (and some mixers) have a dedicated output for sub-woofers in which case this is the best place for it because the higher frequencies will have been filtered out.
Some high quality amplifiers like the JAMO MPA 101 have a filter switch and adjustable filter level for powering sub-woofers. You then just connect the speaker to the speaker terminals in the normal way.

Otherwise on a p.a. mixer you could use the main output, one of the auxiliary, monitor or sub-mix outputs. If you are not using the main output you will need to route signal to the appropriate output accordingly. Either way your output signal will cover the full frequency range - your subwoofer may have built in filtering or you may need to use some sort of crossover to split the signal between the sub-woofer and the rest of your speaker system.

Feb 25, 2011 | Audio Players & Recorders

1 Answer

Amp's blue light is on but does not seem to send power to sub


It is possible that the set has gone into an error shut off. Please disconnect the power and allow it to cool off. remove the sub woofer connections if the amp does not turn on again. check for any short in the coils. reconnect the sources once again , making sure that the source is coming into the amp. If there is still no output, remove the cover and check if the main amp is shutting off due to any short in the output. You will need to confirm this out as you had run this a little too much in heat. replace the shorted mosfets if confirmed. hope you get this right. Good day

Jul 13, 2010 | Pioneer GMD7500M Car Amp

1 Answer

I'm replacing a JAMO amp.


The 201 is 100w in to 4ohms and the 101 is 50w into 4 ohms other then that there the same

Mar 24, 2010 | Jamo MPA201 2-Channel Amplifier

1 Answer

I have a MPA 201 2 channel amplifier that just stopped putting out power, power light is still on, any suggestions?


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 16, 2009 | Jamo MPA201 2-Channel Amplifier

1 Answer

Jamo MPA-101 2 channel amp quit working


Check the small electrolytics on the power supply board for high ESR, Very common problem on these amps. Protect circuit stays latched due to high ripple from PS.

Mar 24, 2009 | Jamo MPA201 2-Channel Amplifier

1 Answer

MPA-101 Amplifier powers on, receives source signal, the fuse is not blown inside, but no sound comes out of the amplifier. The amp is pretty new, doesn't even have dust inside the unit.


Hello, is this a Radio Shack PA amp or Jamo amp? The unit is probably in "Protect" mode. Is this a PA system or a receiver...receivers have a protection circuit that will not let the speaker relay activate if the amplifier output section is shorted and sending voltage towards the speakers...so they won't fry!!The speaker relay should activate within 3 to 5 seconds if your output section is ok.

barneyluc

Oct 13, 2008 | Audio Players & Recorders

1 Answer

Monster MPA 5150SS


Might be a failing semiconductor component (usually an old transistor) in the amplifier's front end. This caused by the oxidation through the component legs or pin. I usually touch and move each transistor's body to exaggerate the noise. You can research also what kind of noise is it producing- intermittent, static, etc.
hope this helps..

Sep 20, 2008 | Monster Cable MPA 5150 SS Amplifier

Not finding what you are looking for?
Jamo MPA201 2-Channel Amplifier Logo

Related Topics:

2,786 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jamo Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5686 Answers

rjivaro

Level 2 Expert

158 Answers

Robert Rankin

Level 2 Expert

357 Answers

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

Answer questions

Manuals & User Guides

Loading...