Question about Phonic Am 844d Mixer 8 Mic/line 4 Stereo 4 Group Mixer

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Faders not working properly on am844d right channell goes in out when I wiggle the main L/R fader. Some of the channel faders are eractic. The level of volume is not responding right to fader movement.This is a Phonic AM844D audio mixer. Tried blowing out with canned air and little deoxit . It seemed to help for while , but doing the sme things again.

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  • Phonic Master
  • 5,603 Answers

You probably wrecked the faders putting De-Oit in them!!! NEVER use that in pot and faders... It is for switch contacts only.
You have ONE chance to save them. From Home Depot get a can of CRC226 in the electrical dept. Put some of that using the spout into each fader near the middle and work the faders. The CRC226 costs about $2.70 a can. Make sure it is the 226 as there are OTHER CRC products there and only 226 is the one that is suitable.

The De-Oxit will have cleaned out the lube of the faders and if you are unlucky, one or more of the wipers will have folded back which is fatal... The CRC226 is an electrical lube that I have restored faders and pots with... It has many other uses including lubing plier joints...

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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What could be causing a strange static sounding noise in the headphones only when pressing PFL on any channel.


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!!
'

Feb 23, 2016 | Allen & Heath AH ZED 12FX 12 Channel Mixer...

Tip

How to Set up Auxiliaries on a Mixer.


Here are some tips to set up the auxiliaries properly on your mixer:
  • Step1:
Your auxiliaries allow you to send the signal from a channel strip to somewhere else while maintaining the signal on the channel strip. For instance, you can use auxiliaries for monitor mixes for performers in a live environment. You can also use auxiliaries for external effects processors or a number of different situations.
  • Step2:
Set the auxiliaries to pre-fader to allow you to change the level for the auxiliary with the auxiliary knob but not with the channel fader. Most mixers have a "Pre" button that allows you to enable pre-fader mode. If you don't have the button pressed, your auxiliaries are in post-fader mode, which means your channel fader will affect the signal level of the auxiliary output. For monitor mixes, you usually want to use pre-fader so you can control monitor mixes independently from the front of house mix. Some effects processors will be better to run post-fader, though, so don't always rely on pre-fader.
  • Step3:
Send out your auxiliary sends. On the back of your board, you there are the auxiliary outputs. For a monitor mix, you will use these outputs to connect to the inputs of the monitors. When using an effects processor, you will use the auxiliary output to connect to the input of the effects processor.
  • Step4:
Plug in a return if necessary. If you are just doing monitors, you do not need returns to the mixer. When using effects processors though, you need a way to get your effected signal back to your mixer. Take the output of the effects processor and connect that to the return input on the back of the mixer. Now you will have to adjust the return section on your channel strip to get the desired signal.
  • Step5:
Use the auxiliary knob to set the desired level. Once you know if you are running pre- or post-fader, and you have your inputs and outputs all correct, you can start sending signal to your auxiliary output. Turn up the auxiliary knob until either your monitors are set correctly or until you have the desired amount of signal going to your effects processor or other outboard equipment.

on Aug 07, 2008 | Yamaha Mg102c Stereo Mixer

1 Answer

Clipping always lit


  1. Make sure nothing is plugged in.
  2. Turn the GAIN, LEVEL, and FX knobs for each channel, counter-clockwise all the way.
  3. Bring the MAIN fader all the way down.
If the signal LED's above the MAIN fader are still lit, then the board most likely has a short in it and will require repair.

If the signal LED's are dark, repeat the following on each channel...

  1. Rotate GAIN clockwise until the mark on the knob is at "12 oclock".
  2. Rotate LEVEL clockwise until the mark on the knob is at "3 oclock"
  3. Raise the MAIN fader to "0".
  4. Check LED's - if they light up then the channel you are working on is "noisy" or has a short in it.
  5. Return GAIN, LEVEL, and MAIN to "all off".
  6. Repeat with next channel.

Jan 25, 2014 | Behringer Xenyx 1202fx Mixer 12 Input 2...

2 Answers

I can't get any sound to go through Mackie 1604-VLZ3. I've tested to insert sound to every channels and checked all button positions and nothing comes out from main output or the phones....


There is NO way to select channels to "Source"... The selections on this mixer are to send the channels to SOLO, Sub1-2 or Sub 3-4 and/or main L-R. You should have the bottom button for each channel punched down to L-R. NEVER connect ANYTHING other than an external effects unit to the INSERT jacks!!!! These jacks are combined output/input jacks with send and return on the same jack. Special insert cables are used for these. An external drum machine should be connected to a line input for one of the channels USING a TRS balanced cable. Page 28 of your user manual shows the block diagram and signal flow diagram. The trim control is the input gain control. Start with those say at 12 o'clock and advance the fader for the channel of interest...you should get signal at the main outs. MAKE SURE that the lines from the mixer to the amps are BALANCED TRS type cables... You cannot use unbalanced cables for this. The user manual explains balanced cables and what they look like. I just repaired one of these mixers that some foolish people plugged stuff into the MAIN INSERT jacks and blew out the driver that drives the MAIN insert which kills the input to the MAIN output drivers. There is one small chip between the AMAIN fader and the sub next to it and one has to remove every knob and take the unit all apart to get to it... It is a tiny surface mounted part the size of a matchhead with 8 leads... not for the faint of heart to repair. As a test of this part, you can plug a st of headphones into the RIGHT MAIN insert jack and drive audio into a channel... turn trim control up fully for the channel and the fader on full, and set the PAN control to 12 oclock and punch down the L-R button for that channel. You should hear the audio in ONLY the left ear... Now try the phones in the LEFT INSERT jack... you again should hear the audio in the left headphone only (these jacks are not stereo like the headphones). If you cannot hear anything, then likely somebody has blown that driver in your unit... It is painful and time consuming to repair this... there are hundreds of knobs to pull off and put back on... dozens of screws and cables and to get it all back together. Also make sure ALL of your interconnected equipment is powered from a SINGLE receptacle or power module. Read your user manual thoughroughly. You can get one online download if you need it.

Sep 10, 2011 | Mackie 1604 Vlz3 16 Channel Mixer

1 Answer

I am unable to send a signal via aux 6 from a channel to ONLY the K sub. The only way I get signal is if I raise the channel fader but then the signal goes to the house L/R mains as well. How do I send a...


It appears that AUX6 is default factory strapped as POST FADER. If you want to change that you will have to disconnect jumper L to A for all channels you want the AUX to be pre-fader and instead connect K to S for the option jumpers. I don't know if this requires soldering or whether they are push on jumpers. These should be available in the back cover. In ADDITION you will have to run the switched pre/post fader switch in the PRE position which will make ALL AUX's that are strapped this way PRE FADER.

Jul 09, 2011 | Allen & Heath Mix Wizard Wz3 16:2...

1 Answer

I have a Behringer PMP 6000 that I just bought. With the power amp switch in Main L/Main R it works fine, but if I switch it to Main/Mon, only the Mon works, nothing from the Main. Bridge mode doesn't...


Bridge mode you use chan B (left connector on the back) using a SPECIALLY wired Speakon. The impedance of a speaker connected as such CANNOT be LESS than 8 ohms.

In the Main/Mon mode, the two amplifiers are separated in function. The monitor knobs for EACH channel input control the mix sent to Channel A which is for the monitor speakers. The Mon1 controls the level sent to Output A for the monitor speakers. Mon2 fader is NOT used.

The individual channel faders control the main mix and the Main fader controls the level sent to Output B which goes to the main speakers.

Apr 02, 2011 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

No sound


There can be any number of reasons for this problem - solve it diagnostically by starting with something that you know is working and work through systematically to the other end.
  1. Test a microphone on a separate amp to make sure it works okay. Check amp and speakers working. Check that all output cables from mixer to amp are working by testing separately.
  2. Plug microphone into a channel on mixer. Also plug in headphones and turn headphone volume control up.
  3. Make sure input sensitivity knob is turned up a bit (say half way) and main output faders (yellow) are up.
  4. Check that channel is turned on (little button just above the channel fader- needs to be pressed down)
  5. press pfl (pre-fade listen) button (next to button to switch channel on)- do you get any sound on main output or headphones or any indicator lights on mixer to show signal is getting that far (eitehr the individual channel metering lights or the main ones in the central section)?
  6. turn off pfl - make sure channel fader (slider) is up - normal position is ) - about 3/4 of way up. Check lights again on individual channel and main output section - any signs?
  7. Is the sub mix button for the channel pressed down - in which case you will need to bring sub mix (red) output faders up as well as main faders.
  8. If you have got signs of signal on the individual channel but not main see if the channel has been routed somewhere odd (like a subgroup of channels).
  9. Plug a working amp and speakers into one of the auxiliary outputs and use the relevant auxiliary send knob (on each channel just above the faders and pfl switches) to pan some signal to that auxiliary out - do you get anything? There is also a headphone socket for listening to the auxiliary channels (with a selector switch /knob to determine which one - make sure it is in the right position) try listening to the auxiliary output with headphones - anything? If yes the problem lies in the main output section.
  10. Check that there is not a jack plug in the insert socket (to route signal through an external effects unit) without a matching return jack being plugged in - if appropriate is relevant effects unit switched on and correctly set up - if unsure remove the insert plug to take it out of the system.
  11. Make sure any mute buttons are not switched in on main outputs.
You can download a full user manual here http://www.allen-heath.com/gl/gl2400

Feb 22, 2011 | Allen & Heath Allen and Heath GL2400-32...

1 Answer

I have a behringer xenyx 2442 and the main output fader no longer works. Each individual channel fader now seems to go direct to the main mix and appears to bypass the main fader


The utput fader has probably been broken. If the knob takes a hit, it breaks the resistance element. The part is inexpensive but it takes a lot of work to access and replace the part.

Oct 14, 2009 | Behringer Xenyx 1002fx Mixer 10 Input 2...

1 Answer

No volume control with 2 faders on Mackie CR1604 mixer


If all other functions work for those channels, the most likely problem is the fader itself. These can fail and operate more like switches rather than faders. Without witnessing the behavior, I can not state that for sure. While these mixers are not the hardest to work on, they are time consuming. The faders can be purchased from Mackie directly. If you need to have this repaired, any shop that repairs audio gear should be able to erpair this for you. Where are you located?

Dan

Feb 09, 2009 | Mackie 1604 Vlz3 16 Channel Mixer

1 Answer

PEAVEY 6 CHANNEL MIXER (PV6) - Right Fader Crackles


its obvious that the fader in question needs replacing ..parts are available from www.peavey.com

Aug 09, 2008 | Peavey 32fx USB 32 Channel Mixer

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