Mackie ProFX12 Professional Compact Mixer - Answered Questions & Fixed issues

RTFM

I've found Mackie to be quite helpful when problems arrise. Their consumer support link is- Contact Support Mackie

It sounds like a part is burning out. If you can look inside , look for a part turning brown or getting really hot in that area. That would be the easiest thing to do if you can get in there.

Be sure the capacitor was replaced with the correct polarity? in the beginning of my tech career I have replaced caps back words on accident. ..

Maybe an open ground somewhere or something needs shielded.

Use balanced lines for the audio interconnects. Use XLR low noise mic cables or TRS type cables. IMPORTANT: Power the speakers and the mixer from the SAME receptacle, even if it means running extension cords. Ground bounce in building wiring can destroy the circuits in the equipment.

it should be if you hook something up to an input channel like w the band i was in i had to hook my turntables up to a microphone jack on an open channel . so yeah if u plug lets say a cd player plug the output of that into the input of the mackie and make sure you have your speakers in the output of mackie all set up and it should work no problem. We have the same mackie

you can take it to your local shop that you bought it from or contact Mackie and they might be able to do something for you

This is probably pilot error. There are a bunch of things to do to setup this correctely. I would recommend looking at the videos about mixer setup on YouTube. There is a procedure you go through that is COMMON to most brands of the mixer. The fact that the volume meters aren't working at all implies a problem that the mixing buss is not receiving audio. Turn trim gains up, turn the faders both the channel and the main up, and UNMUTE the channels of interest and you should be getting audio through the unit. ALso does your headphone jack work?

Contact Mackie direct. They will know which component is failing. Link to the company for one of their powered speakers.

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If your Mackie SR1530 is powering on but you're not getting any sound, there could be a number of potential causes. Here are a few things you can try to troubleshoot the issue:

1. Check your connections: Make sure that all cables are properly connected and securely plugged in. Check both the cables going into the speaker and the cables that are connected to your audio source.
2. Check your audio source: Make sure that your audio source is turned on and properly connected. Try connecting a different audio source to the speaker to rule out issues with the source.
3. Check the volume levels: Make sure that the volume on both your audio source and the speaker are turned up. Try turning up the volume to see if you can hear anything.
4. Check the input settings: Make sure that the input settings on the speaker are correct. For example, if you are using an XLR cable, make sure that the input on the speaker is set to XLR.
5. Test the speaker with a different audio source: If you have access to another audio source, try connecting it to the speaker to see if you can get any sound.

If none of these troubleshooting steps work, there may be an issue with the speaker itself. It may be a good idea to contact Mackie customer support or a qualified audio technician for further assistance.

If you are experiencing an issue where the QSC RMX 1450 amplifier is not giving any sound when connected to the main output of your Mackie 16 OK mixer, but works when connected to the aux send, here are some possible causes and solutions:

1. Check the main output level on the Mackie mixer. If the level is too low or muted, this can cause the amplifier to not produce any sound. Increase the main output level on the mixer and check if the amplifier produces sound.
2. Check the cables connecting the mixer to the amplifier. If the cables are damaged or not connected properly, this can cause the amplifier to not produce any sound. Ensure that the cables are connected securely and are not damaged or broken.
3. Check the amplifier settings. Ensure that the amplifier is set to the correct input source and that the input gain level is set correctly. You may also want to check if there are any protection modes or limiters enabled on the amplifier.
4. Check the speaker connections. If the speakers are not connected properly or are damaged, this can cause the amplifier to not produce any sound. Ensure that the speakers are connected correctly and are not damaged.
5. If none of the above steps work, there may be an issue with the mixer or the amplifier. You may need to contact a qualified technician to further diagnose and repair the problem.

Remember to always follow the manufacturer's instructions and safety guidelines when working with audio equipmen

I would check the insert socket.

I doubt the issue will be the regulators if you have the correct voltage on them. Check where the hum is coming from. What frequency is the hum; 50/60HZ = mains hum = bad ground. 100/120HZ = power supply hum. Affected by a control somewhere maybe.