🙏🏻HELP🙏🏻 RHYTHMIC POPPING M32R (aux channels only)

[Jordan bradford]

**PLEASE HELP**
About 2 weeks ago my m32 Developed a rhythmic popping sound in the six aux channels. Replace cables and everything else you could possibly think of. The sound only comes through the six aux channels.

tonight I disconnected all cables from those channels however the popping is still there but only in those channels.

also tonight no audio would come through those channels we tried multiple sources iPad iPod computer CD player if you gained it all the way up you could faintly hear some audio but the rhythmic popping is unbearable please help!

 

[Tim McCulloch]

Start with reloading firmware.

Has the console been moved, slammed, dropped? Any way something with phantom power got plugged into ani Aux?

Using a DL32?

 

[Jordan bradford]

Start with reloading firmware.

Has the console been moved, slammed, dropped? Any way something with phantom power got plugged into ani Aux?

Using a DL32?

It’s in a rolling rack. It’s moved in that rack with all of our other gear down the hall and into the event room 2 times a week. Rolling on carpet. No slamming.

nothing has been plugged into the aux ports. ???

 

[Rob Timmerman]

Noise in combination with low signal level suggests an interconnect issue to me (e.g. improper signal reference). What's connected to the aux outputs, and with what type of cabling (TS, TRS, some funky stack of adapters, a high-impedance air gap?).

Also, you mention carpet. How's the humidity? Low humidity and carpet is often a recipe for ESD, which can be damaging to insufficiently protected equipment.

 

[Jordan bradford]

Noise in combination with low signal level suggests an interconnect issue to me (e.g. improper signal reference). What's connected to the aux outputs, and with what type of cabling (TS, TRS, some funky stack of adapters, a high-impedance air gap?).

Also, you mention carpet. How's the humidity? Low humidity and carpet is often a recipe for ESD, which can be damaging to insufficiently protected equipment.

Highest quality cables money can buy. No adapters.

humidity is normal, not high.

you can unplug all cables in aux ports and noise is still there. (In the mixer.)

 

[Rob Timmerman]

Highest quality cables money can buy. No adapters.

humidity is normal, not high.

you can unplug all cables in aux ports and noise is still there. (In the mixer.)

Right. What's at the other end of the cables, allowing you to hear the noise? And what's the configuration of the cables (TS vs. TRS matters in this case)? Swapping cables around greatly reduces the chances of this being related to a specific cable (the "quality" of the cable), but does not eliminate the possibility of a systemic issue related to all the cables (especially if the swapping of cables was done with cables of the same type).

And when you say it's still there with all the cables unplugged, how are you determining that? The aux outputs on that console do not have dedicated buses associated with them.

Also, the concern is low humidity, not high humidity

 

[David Sturzenbecher]

Right. What's at the other end of the cables, allowing you to hear the noise? And what's the configuration of the cables (TS vs. TRS matters in this case)? Swapping cables around greatly reduces the chances of this being related to a specific cable (the "quality" of the cable), but does not eliminate the possibility of a systemic issue related to all the cables (especially if the swapping of cables was done with cables of the same type).

And when you say it's still there with all the cables unplugged, how are you determining that? The aux outputs on that console do not have dedicated buses associated with them.

Also, the concern is low humidity, not high humidity

He is taking about the Aux inputs… not outputs. They have meters like any other channel.

 

[Rob Timmerman]

He is taking about the Aux inputs… not outputs. They have meters like any other channel.

Ah. Well, I suppose I should stop making assumptions about the setup while attempting to troubleshoot and let the OP actually provide the detail required to figure out what's going on.

 

[Helge A. Bentsen]

To this day I haven’t met any issue with M32 that couldn’t be solved with a factory reset.

 

[Jordan bradford]

Right. What's at the other end of the cables, allowing you to hear the noise? And what's the configuration of the cables (TS vs. TRS matters in this case)? Swapping cables around greatly reduces the chances of this being related to a specific cable (the "quality" of the cable), but does not eliminate the possibility of a systemic issue related to all the cables (especially if the swapping of cables was done with cables of the same type).

And when you say it's still there with all the cables unplugged, how are you determining that? The aux outputs on that console do not have dedicated buses associated with them.

Also, the concern is low humidity, not high humidity

With no cables plugged up just the mixer. There is signal in the aux channels visible in the led meters. If you plug headphones (only) in you can clearly hear the noise. The noise is within the console but only in the 6 aux channels.

 

[Riley Casey]

With no cables plugged up just the mixer. There is signal in the aux channels visible in the led meters. If you plug headphones (only) in you can clearly hear the noise. The noise is within the console but only in the 6 aux channels.

Open the console and unmate and remate any internal connectors to that board. If that doesn’t fix it you likely have a failed component on the board and it’s time for a component level repair or a board replacement.