Mackie 1604 Vlz3 16 Channel Mixer - Page 6 - Answered Questions & Fixed issues


No. It should not cut out. Must be a circuit problem. Get in touch with the shop you bought it from or a really good repairer and get them to have a professional look at it but get a quote first.
Good Luck

Mackie 1604 Vlz3... | Answered on Sep 13, 2009 | 367 views


Unfortunately, this is not a problem that will be easily resolved remotely. As far as I know, the main module is not a replacement part. These units are pretty rugged and it sound more like you have a power supply problem rather than a board problem. If you have not worked on one of these before, please do not attempt to dis-assemble one. These are a bit tricky to work on. More than likely, the problem will be either in the power suppy, or be a couple of defective surface mounted op-amp ICs. None of the parts required should be expensive. Based upon your description, I would expect a parts cost in the $15-$30 range.

Where are you located? Perhaps I can recommend a service shop.

Dan

Mackie 1604 Vlz3... | Answered on Sep 05, 2009 | 194 views


Without hearing the noise or seeing it on a scope, I can't say for sure, but this type of noise can come from a number of sources. If there is a high signal level on one bus, you could be getting some cross-talk from that channel onto the channel with the higher gain setting. Try to track this down a bit by experimentation. For example, do you hear this with NO connections at all, but with the gain turned up on one channel?

Please try a few things to narrow this down a bit and I'll try to provide you with some options.

Thanks,
Dan

Mackie 1604 Vlz3... | Answered on Jul 27, 2009 | 270 views


Hi there. Disconnect all auxiliary inputs. Still buzzing? Internal problem. Not buzzing? External problem.
Thanks
Paul

Mackie 1604 Vlz3... | Answered on Jul 11, 2009 | 289 views


Don't know your setup but have you checked out any possible Hum loops? Have you updated any firmware updates? Is your mains input clean (no spikes or very short drop outs of voltage)? Are you near any possible RFI, e.g. Taxi's or CBr's? The list goes on so check out the Mackie forum on the web for more. Good Luck...
Regards,
Frank.

Mackie 1604 Vlz3... | Answered on Jun 30, 2009 | 663 views


I'm not sure which entry will get to youo so I have reposted my response here: This is a rare occurrance for these units. It means that either one or more of the rectifier diodes has shorted or that one of the voltage regulators is bad. In any case, this is not a unit I would suggest a novice attempt to repair. Can you update this with your location so I can suggest a repair center? The actual repair should be straightforward and not too expensive. Thanks, Dan

Mackie 1604 Vlz3... | Answered on Jun 11, 2009 | 130 views


This is a rare occurrance for these units. It means that either one or more of the rectifier diodes has shorted or that one of the voltage regulators is bad. In any case, this is not a unit I would suggest a novice attempt to repair. Can you update this with your location so I can suggest a repair center? The actual repair should be straightforward and not too expensive. Thanks, Dan

Mackie 1604 Vlz3... | Answered on Jul 11, 2011 | 917 views


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

Mackie 1604 Vlz3... | Answered on Jun 08, 2009 | 224 views


Re-solder input jack connection to the board. Sounds like cold solder joints.

Mackie 1604 Vlz3... | Answered on May 29, 2009 | 165 views


Yes, the ribbon cable is the 1st thing I would check. You can check the ribbon like this: Disconnect said cable from the channels. Connect cable connector from a known good channel to the problem channel. If channel sounds the same trace a signal through the channel op-amps.

Mackie 1604 Vlz3... | Answered on May 29, 2009 | 926 views


Are you sending the main mix to the monitors or are you giving them their own mix? What about using the sub groups, use 1 for your monitor send.

Mackie 1604 Vlz3... | Answered on May 26, 2009 | 498 views


Here's a shot of the connector, mated to the motherboard.

b77a2e7.jpg

Mackie 1604 Vlz3... | Answered on May 19, 2009 | 427 views


check ur power supply unit inside...there maybe component already shorted or short circuit...whether a transistor...

Mackie 1604 Vlz3... | Answered on Jan 03, 2009 | 444 views


You probably have issues with caps in the power supply....I would check that first...open it up and look for buldging caps and replace any that you find....

Mackie Music | Answered on Sep 27, 2019 | 79 views


Hello, check if your Mackie, is with the latest Firmware update, you can get it on Mackie's official website
I sent you the Mackie technical support link
I hope you solve your concern
Greetings Franco Dosil

Hola, revisa si tu Mackie, esta con la ultima actualizacion de Firmware, puedes obtenerla en la pagina oficial de Mackie
Te envio el link del soporte tecnico de Mackie
Espero logres resolver tu inquietud
Saludos Franco Dosil
https://mackie.com/blog/support

Mackie Music | Answered on May 03, 2019 | 61 views


Hello Abel, I sent you the link to download the service manual of the Mackie PROFX16
I hope you can solve the problem you have with your Mackie
Greetings Franco Dosil

Hola Abel, te envio el link para que descargues el manual de servicio de la Mackie PROFX16
Espero que puedas resolver el problema que tengas con tu Mackie
Saludos Franco Dosil

https://elektrotanya.com/mackie_profx16_profx22_sch.rar/download.html

Mackie Music | Answered on May 03, 2019 | 98 views


First thing to do is get a can of contact cleaner. Take off the knobs and spray it into the reostats below. Spray into all the switches and even into the sliders. Move everything back and forth - 0 to 10 (to clean them). If we're lucky, that will fix it.
Good Luck

Mackie Music | Answered on Dec 26, 2018 | 81 views

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