Question about Mackie SRM 1801

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A output working not b - Mackie SRM 1801

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  • Mackie Master
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This will likely be a component level issue. I suggest taking it to the shop. Call and ask them, but some repair guys prefer you pull the amp out to save space in their shop.

Posted on Mar 28, 2015

Testimonial: "Thanks can I use just a output for both for time"

  • rhodesworks Mar 28, 2015

    As I understand it, as long as you're just running mono, it should work.

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I have xr 1220 an no sound output?mixer is working but no sound output to the speakers.


Hi there,

If there's a cue output on the unit, use this to make sure it's actually outputting a signal.

Just put some headphones in the cue port and see if there's anything.

If there is, it may be a problem with your speakers or how you've connected it to your speakers.
If all else fails, it'll be your output board in the mixer that's the issue.

Good luck & have a great day! :)

Jul 12, 2017 | The Music

1 Answer

My zoom g1x theres no sound.all power are working lcd light are on.but the sound cannot come out.can any one help me..


What letters / numbers that appears on the screen?
If the display is normal, and you can switch to other banks, and can edit each bank, then the problem of no sound, is at the pre-amp IC input, output amp, or CODEC converter.
This is the overall image of G1X inside.zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-0.jpg Next, we zoom-in the middle of picture above.
See the next picture.
IC2 (left) is input pre-amp IC (NJM2100).
IC4 (middle) is the CODEC IC (WM8734).
IC5 (right) is the IC output (NJU7082).zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-1.jpg

Test whether the input IC is working normally, turn ON G1X, plug the guitar, go to BYPASS/TUNER menu. When the TUNER function could work, certainly input IC is not damaged.
Means only two possibilities, namely CODEC and output IC. That is not easily tested, except in specific ways.

May also, there are problems in the input / output socket.
Turn ON G1X. Try the following (see figure below):
  • Test the output socket. Touch pin output socket (right red arrow) with finger / screwdriver / whatever. If sound is heard in the amplifier, the output socket is normal.
  • Test the input socket, Same as above. (left red arrow). (if this happen in this point, problem is clear).
zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-3.jpg

NOTES:
If lcd light are on (as you say), but appearing G1 or d5 or bt, and the system are hang / frozen, this is a different issue to the one described above,and dealt with in different ways too.

References IC datasheet:

NJM2100.
http://www.njr.com/semicon/PDF/NJM2100_E.pdf
NJU7082
http://www.datasheetarchive.com/dlmain/Datasheets-22/DSA-439015.pdf
WM8734 http://www.cirrus.com/en/pubs/proDatasheet/WM8734_v4.4.pdf
.

Sep 10, 2015 | Zoom Music

1 Answer

No output to main speakers.


I presume you mean there is no output on the main out. Is there output on the groups etc? Have you checked all the routings? What else works / doesn't work?

Aug 19, 2013 | Peavey 32fx USB 32 Channel Mixer

1 Answer

Aux Channel 1 not working


What makes you say it works fine if you are getting no output? Have you just got it turned down?

May 21, 2012 | Mackie cfx20 mkII compact mixer

1 Answer

No sound


There can be any number of reasons for this problem - solve it diagnostically by starting with something that you know is working and work through systematically to the other end.
  1. Test a microphone on a separate amp to make sure it works okay. Check amp and speakers working. Check that all output cables from mixer to amp are working by testing separately.
  2. Plug microphone into a channel on mixer. Also plug in headphones and turn headphone volume control up.
  3. Make sure input sensitivity knob is turned up a bit (say half way) and main output faders (yellow) are up.
  4. Check that channel is turned on (little button just above the channel fader- needs to be pressed down)
  5. press pfl (pre-fade listen) button (next to button to switch channel on)- do you get any sound on main output or headphones or any indicator lights on mixer to show signal is getting that far (eitehr the individual channel metering lights or the main ones in the central section)?
  6. turn off pfl - make sure channel fader (slider) is up - normal position is ) - about 3/4 of way up. Check lights again on individual channel and main output section - any signs?
  7. Is the sub mix button for the channel pressed down - in which case you will need to bring sub mix (red) output faders up as well as main faders.
  8. If you have got signs of signal on the individual channel but not main see if the channel has been routed somewhere odd (like a subgroup of channels).
  9. Plug a working amp and speakers into one of the auxiliary outputs and use the relevant auxiliary send knob (on each channel just above the faders and pfl switches) to pan some signal to that auxiliary out - do you get anything? There is also a headphone socket for listening to the auxiliary channels (with a selector switch /knob to determine which one - make sure it is in the right position) try listening to the auxiliary output with headphones - anything? If yes the problem lies in the main output section.
  10. Check that there is not a jack plug in the insert socket (to route signal through an external effects unit) without a matching return jack being plugged in - if appropriate is relevant effects unit switched on and correctly set up - if unsure remove the insert plug to take it out of the system.
  11. Make sure any mute buttons are not switched in on main outputs.
You can download a full user manual here http://www.allen-heath.com/gl/gl2400

Feb 22, 2011 | Allen & Heath Allen and Heath GL2400-32...

1 Answer

Have a casio px 320 and trying to use it in GarageBand on my Mac OS X. Connecting USB cable from USB output on Casio to USB input on Mac doesn't work. Any help?


use the audio output to send the keyboards internal patch sounds, or use a usb midi adapter to use the keyboard to trigger the garageband midi sounds, if the keyboard has a midi output, that is. the usb output requires software drivers to use, and IS NOT mac compatible. You may have to select a midi source in garage band preferences or settings if you are using midi.

Nov 14, 2010 | Casio Privia Keyboard Case

3 Answers

Iam trying to make my behringerXENYX 1204fx mixer, / connect


I have trouble my new behringer xenyx 1204FX VU led dead , like new VU it must play , how to repair this unit VU light

Mar 13, 2010 | Behringer Xenyx 1002fx Mixer 10 Input 2...

1 Answer

No output from my Marshall MG15DFX


could be effects module or sound output i.c. also check send and return jacks

Feb 04, 2010 | Marshall Mg15dfx 15-Watt Combo Guitar...

1 Answer

Older Cr 1604, powers up but no output, suddenly after gig.


The power supply is located in that area on one side. It is possible that one of the output op-amp ICs has failed. There are a number of 4558 ICs used as output buffers for this unit. Without seeing the unit and testing parts of it, I can't say for sure. These are not the easiest to work on as they are really compact. Where are you located? I may be able to suggest a service center in your area. The repair cost should not be too bad. The parts are cheap and readily available. Please update this with your location. Thanks, Dan

Jun 06, 2009 | Mackie 1604 Vlz3 16 Channel Mixer

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