Allen & Heath Music - Recent Questions, Troubleshooting & Support


There is no USB connection on this unit

Allen & Heath... | Answered on Feb 07, 2019


Usually this problem happens due to bulging of filter capacitors in the Power Supply Unit. identify and replace faulty capacitors with higher voltage ratings to fix this problem. Replacement of the capacitors is very easy if you have repair experience or at least soldering experience.

Allen & Heath... | Answered on Jan 27, 2019


Google that, best bet...

Allen & Heath AH... | Answered on Dec 14, 2017


Does the left meter do the same thing? If the meter matches the right one, I would suspect the volume potentiometer on the powered speaker. Try exercising the volume knob. There might be some oxidizing on the potentiometer.

Allen & Heath... | Answered on Oct 25, 2017


The "PFL" Stands fo r"Pre Fader Level". Just in case you did not realize. so when you press the "PFL" button , and the red light goes out?, You're saying that the hissing goes away and that you have clarity. Yes? and the volume presents no issues? Also correct? Part of that simply, is with the PFL in the on position. You are engaging the fader for one, which will add to an already boosted signal ( the the fader is turned Up?). also you may have your Clip set incorrectly. to set this you turn PFL off, then at your signal input level Dial (usually at the very top in-line with your fader. _ set the volume on your device, then input clip level on the board \ to where the clip light comes on. not a steady light, but a blinking light so make it steady, then back it off a hair. Okay? this whole time make sure your mains are down. or off at the faders. Once clip is set., PFL is in off position, gradually turn your mains up to level. Now, the PFL is for when you have more than one signal. say from an instrument on another channel. unless you have that? No need to use the PFL. If you do have an instrument in line,. then, before you turn PFL on,make sure that your fader on that channel is turned off. -turn on your PFL, then gradually bring that to level. never messing with the mains level.

I know that is a lot of info. but it is a process. that should eliminate any hissing you may have heard.
Good luck!!
'

Allen & Heath AH... | Answered on Apr 19, 2016


If this is stopping when you grab a connector then you have a bad solder on the connector. a short or break in the wire or a ground is bad.

Allen & Heath... | Answered on Apr 07, 2016


You haven't given us much information... You obviously have some sort of feedback and saturation in process. First thing is to unplug ANY signals into the unit including any inserts and see if problem goes away. If it does, start adding them back in. If it doesn't go away with only the main outputs then VERIFY that you are using BALANCED interconnects to your amps/speakers AND that the mixer AND all of these amps/speakers are powered from the SAME receptacle or power conditioner module. If the BARE mixer with only headphones has the problem, then you have a power supply in the mixer that is squeging.

Allen & Heath ... | Answered on Jun 20, 2015


Open and find debris. Identify its source and decide if repair is necessary.

Allen & Heath... | Answered on May 16, 2015


1st....the output section, "M" stands for mono. The A&E does not have "monitor" sends per say but instead calls them "Aux's." Adjust the proper Aux for the input channel 1-16 and use the Aux output section (row of knobs above output sliders) as the master volume. By using Aux 1-4 (and with more amps) you could send 4 discrete monitor mixes to four different band members. Bass likes his monitor strong but doesn't want to hear other members while guitarists want to hear only himself and the singing drummer...etc.

Allen & Heath... | Answered on Jun 04, 2014


You've pressed the "solo" button by accident.

Allen & Heath... | Answered on Jun 04, 2014


Probably the on-board voltage regulators. Little square thingies with three feet. LM1508 or LM1509 or so. Measure the voltage on the third foot and see if they are working. Be good.

Allen & Heath... | Answered on Apr 15, 2014


If you pull the knobs off, you will find lock nuts under them. You could tighten them up. See if the knobs have set screws on them to lock them in place before pulling them off. On Allen & Heath, I don't think they do but, just in case.

Allen & Heath... | Answered on Mar 29, 2014

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