iFixit - Answers With Device "audio mixer"

AH ZED-10FX: FX Loop Creating Excessive Noise

Sat, 17 Jun 2023 13:39:45 -0700

The mixer works great, except for if I have any of the FX on. It appears the FX board is creating static or other crackling, even when the volumes of all FX are turned off. I've yet to open the case and test the effects board.

Any advice regarding troubleshooting? I'm not sure if there's a replacement board for this unit, but that may be where I end up.

⟐ Answered June 17, 2023 at 13:39 MST

QU-32: No sound at all the outputs of Qu-32 audio mixer

Sat, 01 Feb 2025 07:35:27 -0700

My Allen and Heath Qu-32 audio mixer had all of its outputs abruptly ceased producing sound. On the meters, input signals could be observed, but there was no sound coming from the outputs. How can I fix this issue?

⟐ Answered February 01, 2025 at 7:35 MST

Behringer PMP2000D: Why is it not turning on?

Thu, 16 May 2024 03:23:18 -0700

Yesterday I turned on the phantom power and forgot to turn it off and now it is not starting.why?

Yamaha DM1000: My yamaha DM1000 mixer starts firmiware and only lights a blue screen.

Sun, 16 Aug 2020 22:05:58 -0700

Hi! I have a mixer dm1000 yamaha that started to no longer start the firmiare, instead is the display screen only with the backlight lit. All functions are off.

I have knowledge in electronics and do the maintenance of my consoles but this dm 1000 did not do any previous maintenance. can someone with experience in this situation guide me ????

thank you!

⟐ Commented August 16, 2020 at 22:05 MST

behringer: Broken jack plug lodged in phones socket of Behringer Q502USB mixer

Tue, 03 Apr 2018 07:22:08 -0700

When I removed my headphones from the headphone socket of this mixer the end of the jack plug (10mm below the lowest ring) became detached, and is now stuck in the base of the headphone socket. This prevents me from plugging in other headphones, and has effectively disabled the headphone socket. Does anyone know whether it would be feasible to disassemble this unit to remove the detached segment of jack plug?

Allen-Heath GL4 Audio Mixer: Audio mixer not enough phantom power current?

Thu, 20 Nov 2025 02:31:08 -0700

When I plug in several dynamic and condenser microphones into my 32-channel 1995 Allen & Heath GL4 mixer, a specific large diaphragm condenser (LDC) microphone drops out and turns into white noise.

The mic in question works fine on modern audio interfaces
The only solution is to replace it with an small diaphragm condenser (SDC), and I was able to continue my drum recording session.

The particular LDC mic will work on the AH mixer only if it's the only microphone being powered, regardless of which channel the LDC mic is attached. However, when other channels are powered, even without mics attached in the other channels, the prior LDC drops out into white noise.

The Power Supply Unit has been recapped, about 4 large capacitor and 1 medium capacitor, and 2 smaller ones. -- save for some very small capacitors that do not look like they are blown. The problem described was already noted even for the recapping.

Maybe someone has encountered this same problem and knows where to start looking with regards to this mixer?

⟐ Answer edited November 20, 2025 at 2:31 MST

behringer: Help finding replacement parts

Fri, 09 Mar 2018 08:15:31 -0700

Where can I purchase a new behringer eurolive b415dsp pcb circuit board?

⟐ Commented March 09, 2018 at 8:15 MST

Korg Volca Mix: How to fix the headphone jack?

Wed, 25 Mar 2026 22:51:05 -0700

My headphone jack doesn’t work unless I jiggle it, and it’s getting harder and harder to get it to work now. How do I fix it?

⟐ Commented March 25, 2026 at 22:51 MST

audio mixer: Catastrophic failure on Mixing Console PCBs, anyone ever seen this?

Tue, 10 Jun 2025 14:24:07 -0700

Hey everyone,

I am working on repairing some PCBs off of a TL Audio VTC Mixing Console. There seem to be multiple points of failure, but I have never seen damage this catastrophic and I am wondering anyone has any ideas about what caused this level of damage.

The first damaged item was an LM339N OP-AMP, which ended up actually destroying the pad connected to pin 12, which is GND. Of all the pins, why would GND be burnt up? This device is part of the VU-Meter circuit was is essentially a peak detector circuit for the volume level.

The next failure point was on another PCB in the same console, located nowhere near the previous one. This seems to have melted on both sides somehow. There was also a ribbon cable underneath the board which melted.

I actually managed to find the schematic for the second board, and it seems to be part of a switching circuit for the Pre-Fade-Listen audio signals. It seems like this IC was responsible for the left channel, because the IC2 is actually responsible for the right channel and it is completely fine.

Strangely enough, the analog switch ICs are fine, it is just the OP-AMPs that are destroyed...

If anyone has seen anything like this before it would be really helpful!

QU-32: Why is my console is not turning on

Sat, 01 Feb 2025 07:36:24 -0700

my console is not turing on. when i try to switch it on its just shows QU -32 And Allen & Heath branding. no keys are working its frenzied

⟐ Answered February 01, 2025 at 7:36 MST

AH ZED-10FX: Exeses noise in live sound system

Thu, 27 Jun 2024 02:27:22 -0700

Exeses noise

audio mixer: Yamaha DM3D disassembly

Sun, 05 May 2024 14:58:52 -0700

I purchased a DM3D and I want to put an air tag into it to track it as it will be a rental unit.

I’m taking it apart now but I’d love a guide to do this fast and efficiently.

I’ll document it but if anyone else has one and can advise on best practices, I’m all ears.

⟐ Edited May 05, 2024 at 14:58 MST

audio mixer: Mixer dont have a power

Wed, 01 Nov 2023 04:37:46 -0700

When i switch on the mixer..mixer cannot switch on..

⟐ Commented November 01, 2023 at 4:37 MST

audio mixer: Ahuja 912 mixer amplifier one side problem.left side not working?

Mon, 24 Jul 2023 08:03:51 -0700

Ahuja 912 mixer amplifier left side not working.But the right side is fine. All components are showing fine in multimeter.

Behringer PMP2000D: Only One Wireless Microphone Works At A Time

Sat, 05 Jun 2021 11:50:57 -0700

This Amp allows for two wireless microphones, yet I have two working compatible microphones, and with the USB dongle plugged in, only the First microphone I turn on actually connects, doesn’t matter which microphone I try, or which order, only one will connect, the other just flashes