20 Most Recent Allen & Heath AH ZED 12FX 12 Channel Mixer with USB Interface and Onboard EFX Questions & Answers


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


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


cachepe.samedaymusic.com/.../gl2400ug_ap5597_2-42fad5e2de1bc79db38576be174464d4.pdf - United States
Above is your user manual below is a service and repair manual.
http://www.performanceaudio.com/cgi/product_view.cgi?products_id=16696

Indeed i would suspect something around your Final Output semiconductors, and any associated resistors?
You really must obtain a service manual, here there are the troubleshooting steps required to isolate and hopefully allow repair of your unit.
Look for any discolored components etc, check if any are overly hot... use a temperature probe on suspected components. Freeze spray may also be useful in diagnosis.
Use your eyes & nose to isolate the bad burnt overheated components, I sometimes use a straw up a nostril and selectively go over suspect parts, and "Sniff" to try and detect the overheated smell... it works.
http://www.allen-heath.co.uk/uk/TechnicalSupport.asp
Above is your tech support link, contact them for any info you require.

Allen & Heath... | Answered on Nov 30, 2010


I understand your pain - was googling for similar, and came across this post, 5 years prior. My SGC Nanyo Bass Collection has just started to play silly beggars with the pots, and a bridge fault. Nowhere online seemed to have any details of the wiring, as the problem is, as you say, the fact that all of the tone and volume pots are based on a printed circuit board. If theres a nick or short on the board, its a pig to replace, and I really wouldn't like to have to wire any pots onto it. I'm currently looking at the options of ripping out the old electrics and wiring it from scratch myself. If you're still after answers, good luck!

PS - noted that none of the previous replies are relevant to this - mostly going on about the amps or a Fender guitar??!

Music | Answered 3 days ago


See https://www.diyaudio.com/forums/multi-way/99647-magnavox-horn-specs.html

Music | Answered on Feb 09, 2020


For what it's worth, the Style AA was advertised in 1910 catalogs. I believe they continue to have been made for forty or so years after that. So any time between 1909 (when pianos started being labelled 'Behr Bros') through to around 1950 or so ,,,

You can see the catalog https://antiquepianoshop.com/online-museum/behr-brothers/#berh2

Music | Answered on Feb 09, 2020


Zager yes, but Salisbury Cathedral is a church in Hampshire UK

https://www.google.com/search?q=Is+Salisbury+Cathedral%2F+Zager+Guitars+legit

Music | Answered on Jan 16, 2020


go to www.reliable-store.com you will get it there

Music | Answered on Jan 09, 2020


I AM Making a Good Salary from Home $6580-$7065/week , which is amazing, under a year ago I was jobless in a horrible economy. I thank God every day I was blessed with these instructions and now it's my duty to pay it forward and share it with Everyone. go to home media tech tab for more detail r einforce your heart........... :*
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Music | Answered on Jan 04, 2020


fixya does not do appraisals.

Music | Answered on Dec 24, 2019

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