Question about Behringer V Tone GMX212 2X60 Watt Stereo Guitar Combo (Standard)

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GMX212 I would like to access the electronic part of the amplifier After removing the 6 top screws I still can't open it Can you help me? Gilles Fournier

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There are 2 bolts on both sides also. Remove them and slide out the metalic pan-like holder where all the electronics is

Posted on Jan 02, 2013

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Full compass has thjacke input

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Not sure but a LOT pf Behringer amps HIDE the last two screws UNDER plastic covers that actually hold the handle on. These covers are a PAIN to get off... The way I do this is where the handle goes under the plastic, right there you need to pry the lip of the plastic cover out sideways on both sides at once... The problem is right behind the lip is the metal thing the plastic cover snaps over. There are two plastic dogs on each side of the covers that grip notches in that metal. Once you get those covers off you will find a metric oval headed screw holding the metal and one end of the handle. It may take a couple foul words before you get a cover off... I think they make it hard deliberately... job security for their repair facilities.

Posted on May 24, 2011

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1 Answer

How do I edit the midi preset parameters on a behringer gmx212 using a laptop?

by using a midi editor, midi data cannot be changed while traveling through the cable there are 127 different options for midi, and it needs a digital platform to funtion correctly for paramaters.

Aug 01, 2014 | Behringer V Tone GMX212 2X60 Watt Stereo...


Electronics spray cleaner

The most common problem with guitar amplifiers

and other electronics that are making noise or cutting out

or sticking and not working correctly is a simple fix...

I use Radio Shack electronics spray contact cleaner

for most of my basic repairs

in the pictures posted I show the basics you need....

some screw drivers, basic knowledge, paper towels,

electronics spray contact cleaner, and a knife

First I carefully remove the nobs (volume control, tone control, etc...)

I use napkins to mask the area and keep from scratching the surface

Then I carefully spray into the (control} and work in back and forth....

the Best way is to spray directly into the potentiometer

that requires access to the internal chassis

on a quality pot there is a Notch that you want to spray into

on a standard pot just spray....

this will repair any scratchy noise or sound that cuts out

on guitar and bass amplifiers,

also can be applied to many other common basic sound problems

I hope this helps someone out?

i could Not upload photos? so please check My link....

on Mar 13, 2015 | Music

1 Answer

Hi, I have a BEHRINGER V-Tone GMX212, I left it


Did you left the amp on overnight with a guitar hooked up to it?

Oct 29, 2013 | Behringer V Tone GMX212 2X60 Watt Stereo...

1 Answer

My handle has broken on my gmx212, how much for a replacement handle??

Call Behringer customer support and they will give you a list of phone numbers of dealers that sell these parts; they will quote you a price.

I did this to get the slide switches for the FX board of the GMX212

Sep 14, 2011 | Behringer V Tone GMX212 2X60 Watt Stereo...

1 Answer

After working great for over a year my speaker seems to only have treble with no base. Not sure what to do

This is a bi-amped speaker. That means it has a separate power amplifier driving the bass woofer and treble horn. They have a low-level electronic crossover to separate the frequencies to the appropriate speaker. The electronic crossover is the least likely to fail... so you need to do a test:
You will need to open the unit and using an ohmmeter check if the woofer speaker voice coil is open or has continuity...It should be around 6 to 16 ohms. If it is above that, the speaker itself is blown and will have to be replaced. If the speaker has continuity, then the bass amp has failed and will require repairing by person that is adept at electronic repair. Before opening the unit you MIGHT be able to diagnose whether the speaker itself is blown by seeing if the woofer generates a thump when power is turned on or off. If it does, then likely the speaker is OK and the problem is the amp, otherwise the tests above need to be done. Usually these plastic cabinets are held together with seveal scrwes from the back. Some are in :deep "wells" and will require a very long shaft phillips screwdriver... and they often are long screws that wear one out unscrewing them. A genlte pry after removing the screws will separate the back and the front.

Jul 16, 2011 | Samson Auro D412A Speaker PA Active

2 Answers

No functions on the front panel..the display does not change....all voltages to boards present and correct....any ideas? belongs to a school....i am a service engineer...but cannot solve the...

This is a wild guess, but I have had a different model, a 110, that had a bad electrolytic power filter cap on the effects board that while a meter showed 5 volts for the effects, what was happening is there was dips in the unregulated voltage that fell below what the regulator needed and the voltage to the DSP fell to the point that the DSP was resetting at twice line frequency. This was ONLY visible using an oscilloscope. ALWAYS verify your power supplies with an oscilloscope to look for ripple and noise. With the processor continually reset, the unit appeared to be inoperative.

Jul 05, 2011 | Behringer V Tone GMX212 2X60 Watt Stereo...

1 Answer

How do I get access to remove & replace the fan in a pmp3000 it looks like the bottom can be removed to gain access. does it also involve removing side panels and handle or can the bottom panel be...

Nope! Leave side panels alone. There are three screws under the front lip (ones that hold the top) and several up the sides of the panel with the faders and the LOWER row of screws on the narrow piece that bends down from the panel with the sliders. Be careful as there are two cables between the top and the lower stuff. One goes to the power supply and the othe goes to a connector under the cover of the power amp module. If you don't have a way to support the top panel while working on the fan you will have to disconnect thosee connectors and they put goo on them which if not careful can break them.
Please be aware that the fan is this is throttled based on temperature sensors on heat sink. Also if the bearings are bad you best replace with exactly the sme model as it has to work with the temp sensors. They have strips that are threaded to act as nuts for the fan mounting. The fan almost doesn't run till you start pushing power... since there are electronics that control the fan, make sure the fan is the cause of inoperation. If the fan is seized up, then replace it.

May 02, 2011 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

How to disassemble Peavey Amp model PV-900 i just need to clean it cause one of the plug (1/4 or xlr) won't works correctly, i need to make a presseure on it to listen sound from one of our...

You will need to remove either the top or bottom panel to get at the jacks. There is probably a bad solder joint that needs to be repaired. You might try tightening the screws on the XLR jacks that fasten them to the back panel first and the nuts that fasten the 1/4"jacks also. I really do not recommend you do this yourself ( accessing the interior) unless you have electronic servicing experience as the filter capacitors in the power supply store a dangerous charge and are soldered to the circuit board in fairly close vicinity to the output stage.

Oct 09, 2010 | Peavey PV® 900 360W Power Amplifier

1 Answer

The fan on the back of my marshall mg 100HDFX is making a weird noise when i first turn it on. It eventually sounds normal after about three minutes. Im not sure what i need to do?

You can either oil it up OR replace it for around 20$
Both ways involve removing the amp from the casing by unscrewing the 6 screws on top and sliding it out and then getting the fan out

locate the fan; locate the 4 outside screw covers that are next to the fan grill screws and pop them open. Remove the four screws that are under those plastic covers. The fan should separate. Take Fan out and remember how it was in there.
To oil: lift the sticker and locate the rubber plunger in the middle of the fan; remove it. Then, put ONE drop of regular 3-1oil NOT-wd-40, pb blaster or bike lube. re-assemble
To replace: just unplug old fan and then replace with new fan. I recommend replacing the fan when it gets to the point of bearing noise because oil doesn't always fix this.

Oct 02, 2010 | Marshall MG100HDFX 100-Watt Amplifier Head

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