Behringer GMX212 Repair and Demo
HTML-код
- Опубликовано: 16 окт 2024
- Behringer amps seem to get a lot of flack regarding their dependability and tone. In this video, I attempt to fix one of those problems and disprove the other.
The GMX212 has some really great analog tones and should not be so easily overlooked by musicians.
Please click Subscribe and Like if you like the video. Thanks for watching!
![ARGENTINA vs. BOLIVIA [6-0] | RESUMEN | ELIMINATORIAS SUDAMERICANAS | FECHA 10](http://i.ytimg.com/vi/C3wPtKNbAOA/mqdefault.jpg)
Hey I was wondering where you ordered your parts for your Behringer gmx 212 v tone amp I need the input jack repaired and I need to get shafts repaired like in your video and would love to know where you ordered parts from so I can repair this wonderful Behringer amp I got
Same here.
I think California is a Mesa Boogie? I have the gmx210 and its amazing honestly I love the vintage Jensen 10" speakers!
Love Begringers. I am in need of a knob for my ACX1000. ANy idea where I can find one?
Dave, just acquired a Behringer GMX212 and she has issues, she lights up and all knobs appear to work but there is no sound. I opened her up and she is clean as a whistle but the only thing I see is a single wire from the FS jack to a small CB looks to have been cut....
By the way, this is a true stereo amp with two discreet channels. Behringer was one of the few companies that made stereo amps that gave a much wider sound field through their two speaker combo amp cabinets.
Also I noticed when you were testing the amp you only had one channel under load at a time. This 'could' cause the opposite channel that isn't attached to a load when the amp is on to burn out the output transistor for that channel. Correct me if I'm wrong but I believe that is the correct assumption on my part. You're fortunate that this didn't happen to you.
I think you may be thinking of a tube amplifier which requires a load due to it having an output transformer.
The output transformer on a tube amplifier converts the high voltage low amperage signal coming out of the power tubes into a low voltage high amperage signal to feed into the speakers.
In addition, the primary winding acts as resistance against the high voltage and the current running through it to the power tubes.
Also, the OT is reflective, meaning that whatever impedance is provided on the secondary (where the speaker is hooked up) will be reflected on the primary, relative to the ratio of the winding.
So the current running through the OT increases as the impedance lowers, causing the power tubes to run hotter, and the primary winding on the OT to heat up, possibly to the point of burning out.
But in a solid state amp, the amplifier is already low voltage with the supply of that voltage (and the current) to the amplifier controlled by components in the circuit, and those components work independently of, and are not affected by, the impedance of the speaker.
At least, that’s what I’ve gleaned over the years. If you find some different info, please post it here. I’m always looking to learn more.
Thanks for watching!
What potentiometer did you use as a replacement? Where did you buy it? My sister's amp knob got broken by people helping her move.
I honestly don’t remember at this point. I do remember that I ran a search for “Behringer effect potentiometer” and there was only one place I found that sold them.
I went back to find more later and couldn’t. They seem to be unobtainium right now.
That said, it’s possible that I may have a couple of extras from a parts amp, but that stuff is in storage right now. It’ll be a while until I get to them, but when I do, I’ll let you know and we can make a deal. Good luck!
Thank you, cool, let me know.
Do you have a part number for those pots? I have a GX212 with 2 broken off knobs. I'd kinda like to fix them but can't find much info on the web surprisingly.
Same issue here, need to replace a couple. Hopefully you get a reply.
I bought one of these amps in 2004. Mine came equipped with Jensen speakers (which were likely made by Behringer and branded as Jensen). I used the amp for years and gigged with it fairly regularly. I also had the Behringer FCB1010 midi board that I used with the amp. The midi board allowed me to switch effects on the fly from a footboard which is a must if you are gigging with the amp. I had no issues with reliability and I carted the amp all over for gigs. It does not take pedals very well but the onboard effects will get you by.
Yes, I was blown away with how good this amp sounded. I'm kind of regretting selling it. Thanks for watching!
Great job Dave! I enjoyed the video, you did an awesome job buddy! I was waiting for you to go through the effects of the am but makes sense since the focus was more on the repair and renovation. Huge thumbs up! Keep up the good work, I will tune in to more!
Thanks for the video. I bought one of these new. Chased problems with it after a few months. To make a long story short one of the ribbon cables was laying on the back of a circuit board. Where the sharp nubs of soldered connections were rubbing thru the insulation and shorting out. Before you spray a bunch of cleaner in the pots make sure that ribbon cable is not rubbing on the back of the board. The crackle was gone after that. I hate this amp because , it's so darn heavy. It is super loud though and makes a backup. Definitely a young strong man or woman's amp. I build my own tube heads and use strictly 112 speaker cabinets because this amp taught me to go lighter. Head and cabinet lol , let the PA do the heavy lifting.
In addition the footswitch for these is nice and worth getting. The Ultra bass switch will work just as well. I use one of those with my still working 15 year old Behringer PMH880S PA head.
Nice demo Dave. Just wondering whether a torroidal transformer will help with Hum on these amps
Thanks Regards
I have the head version The V tone GMX 1200 h-had and then the 4x12 cab. Do you still service these and work on these I need a new footswitch for it because the effects switch doesn't do anything but I can order a new one of those for 32 bucks that's no big problem but if anyting any of my solid-state or two year was to go bad are you still Servicing gear? Also this is an incredible amp I play Heavy Metal and get an insane tone from this head and cab with my affection board using just a ts9 and a Ibanez noise suppressor and then the amps pedal to switch Channels with it's an amazing amp that I got for $200 and I'm so happy with it I'm more impressed with this amp than I am my 6505 into my Mesa 2 by 12 cab
Speakers on This are plug ? Cpnection
I need those same pots for my amp, I am having a hard time finding replacements, do you remember or know where I could order some?
Great video!
Would loved to have seen the full build of your approach to the DIY pedal assembly, The wiring and connection you went with and why you chose it. A "How-to" and your ideas for optional pedal layouts. I need to build this and having a pause-able walk through as I wired my own would be awesome!
Any ideas on "Upcycling" old electronics for things like this at home?
Anyone connect the fcb1010 midi foot controller to this amp? I can’t figure it out🤔
Hi Dave. Good job. Thanks for doing this. I have one of these, and they really are a Big Bang for the buck. I like the tones as well, all useful, and great touch sensitivity for its age and design. Will gig mine this summer. Want to keep it, and so seeing your vid will help me fix it if I ever need to. Thanks for your trouble making this vid. Cheers Aidan
Pedazo de ampli, económico y gigantesco...👍
Any chance you can put the pot part number for the effects section? Just picked one of these amps up and sure enough, knobs broke off. Thanks for the video.
Robert Paul sorry, but I don’t remember the part number at all. I would just do a google search for GMX212 and “effects potentiometer”. I’m pretty sure that’s all I did.
If that doesn’t work, pull the part off the board and use the number printed in the back. You could probably even find the part much cheaper thru Mouser or Digikey.
Good luck and thanks for watching.
I have an amp like this and my problem is that the clean is distorting a lot it is not clean! what can it be? I'm from Brazil and I thank you for your attention!
Edson Mello check the two large capacitors in the power board. They may be bad.
@@davetriestofixstuff4744 a technician has already fixed it again, it wasn’t good for a long time. will be that you changed weak capacitor? which would be the most recommendable? Thank you once for your service!
I don't speak english lol I'm writing in the translator and copying for you
Edson Mello I honestly don’t know if I’d recommend anything since I don’t have the amp on my bench to test. I’m just saying that you should check the capacitors as that seems most likely. But if you have a tech to take the amp to, go with their recommendation. Good luck!
@@davetriestofixstuff4744 beauty probably should be that more thanks for the tips! I found your video very top!
Hello sir , im using this amp too. But i have problem to turn on the amp. I already checked the switch and the wire are in set up properly. Are the plug in to the wall or the amp plug in wire in problem?
Hi dave ...my behringer "vintager " with jenssen speaker.....was the greatest tone i ever got with my SG ,,,, but the volume cuts in / out ....do you have any rough idea what that would be - and would it be easy to fix? greetings from australia
Michael Seymour it could be any number of things. It could be dirty pots, bad capacitors, loose connections, etc... but without being able to test the amp and experience the actually problem, it’s difficult to nail down a cause.
I wish you luck with I though. And thanks for watching!
Hey Dave! Got a question for ya'. I have a Behringer V-Tone GMX1200H head and the input jack is shot. I'm new to attempting electrical repairs but really want to learn. I've got it all taken apart and now need to find out if I can order this piece. The entire input module all the way to the red and black wires that terminate into the whitish/beige plastic piece that is glued into the board. OR should I just chunk it? Lol. I hate to throw away electronics. Maybe save it for my spaceship? 😜
Any help would be much appreciated.
Hey im not super experience but I have repaired my guitar amp before. The input jack was broken and I have some soldering experience so decided to give it a shot. I just used some solder wick to remove all the solder around the input jack and took it out. Then just ordered the same part online for couple bucks and solder it back on. Not super difficult if you have some soldering experience or look up a few youtube videos
@@carsostudio8618 thanks!
Hey in new here and if you could help me that would be amazing my friend for almost a year now I've been trying to find a way to take the effects from this amp out of it and putting it in a Behringer LX 1200 h v - ampire... or some way to take it out of the combo and turning it into a pedal is this possible?
Hi Christa. That sounds like a tall order. From what I could tell, the effects circuit is integrated into two separate boards and wouldn’t lend itself for easy removal. My only suggestion is to take the signal from the line out and feed that into your amplifier of choice. The only problem would be that the entire preamp signal would be coming from that, not just the effects.
Wish I had a better answer for you. Thanks for watching though. I have some new videos coming out soon so make sure you subscribe!
Somthing so so satisfying about taking somthing no one else wants. putting some ingenuity in it and coming out with a piece of bad ass equipment.now that I can sonehwhat repair my own guitars I've bought and halve had opportunities to buy redic nice guitars for almost nothing. Basically bc I didnt go lazy and studied for a day er two
Thanks for showing us the repair !! I found this amp on the second hand market for $ 120, do you think it's worth it to rehearse or play at home?
I think these are very underrated amps. I actually picked up another one recently for next to nothing because it's not passing a signal. I'll be featuring it in a new video as I try to fix it.
But yes, these can be used for rehearsing, home practice, or even gigging.
@@davetriestofixstuff4744 I'd like to have two of these and drive them with a stereo pedal/
Amazing work ! I fixed one of these too. Two roasted LM3886 and a lot of dust.
Hello. I have a big problem. i'm brazilian and i have a behringer vtone gmx212 amplified box, i play guitar. I really like this amplifier, for the sound and strength that this amplifier has. worst of all, is that in brazil, são paulo state, we don’t have spare parts in brazil. authorized assistance, you can throw it in the trash. not quite. Behringer brasil, lives in bureaucracy. something q is possible to solve. my amplifier, it has a defective sound card, burned and there is no good technician q fix this amplifier, at least here. if I can't, you have to throw it in the trash. can you help me please despite the distance?
douglas rocha what do you mean by sound card? One of the boards is burnt up? Which one?
@@davetriestofixstuff4744 here in Brazil we call it a sound output card.
Where are the components like capacitors, transistors, CI.
Where the power goes to the speakers.
In this video of yours, you open the box and have access to the card.
Soooo...I have just enquired about a pair of Jensen JCH 12/70 speakers from one of these amps that the owner is selling because the amp isn't working. I asked if he still had the combo because that would be a ready made 212 cab and was told I can have the lot for what he originally wanted for one of the speakers...(".). I'm told that "It gets a small signal through the speakers, but it's really quiet with the volume turned up.."
Your video has piqued my interest...
Very Awesome and informative video, although i would like to have seen some more of the capacitor fix and deoxit clean up. Great job on the clean up. Rock on!!!
I picked up another one of these that I'll be working on soon and featuring in a new video. I'll most likely be changing out the capacitors as part of the process, so I'll make sure to show that process. Thanks!
Do you have the link of those capacitors? I need some. I was gonna order some from amazon but I am not really sure, if they are all the same size.
What is the size of the capacitors you got?
I don't know the link, but if you just search Amazon for 3300uf 50v you should get what you need.
@@davetriestofixstuff4744 I did search it up but there are some that are 18×30 or 18×36mm. Is there a specific size i need to get or it doesn't matter?
I'm sorry, I don't remember which one I got, but the 18 is the diameter in millimeters while the 30 or 36 is the height. So either should work. If the two you found are the same brand, I'd go with whichever is less expensive.
@@davetriestofixstuff4744 alright thank you so much
I made a foot switch for my old crate head. bought a stereo headphone replacement cable, two switches, and a project box.
Great to see this. A nice job and a kick in the teeth to todays throw away society. Well done Dave!
Yeaaa!!! Mah Man Dave!!!
Mad props on the video. It is much needed and appreciated. I have owned one of these for about 15 years and I LOVE it, but recently it has developed a very loud hum and the volume level between the two channels is way off. I tried cleaning the electronics before but you just showed me that the capacitors probably need to be replaced (especially due to its age). I do wish that you would have shown how you changed the pots and capacitors, but I guess I'll have to find that elsewhere. If you don't mind I would like to know how you discharged the capacitors. I am seriously considering buying another one as well. Anyway, much appreciation and thanks again.
Thanks for the kind words. I have another video where I fix a Peavey Express (similar to the Peavey Bandit) and that one shows the chang-out of the pots. It's the same basic procedure for any amp where the pots are directly soldered to the PCB. You can check that video out here:
ruclips.net/video/1OtPMgiBk3E/видео.html
@@davetriestofixstuff4744 Thank you so much. You ROCK!!! Keep up the great videos......much respect!
You're not far from Jimi's sound there ;)
Good vid, bad amp and not very serviceable at all! That's cheap stuff anyway! The board platines are double lined and not very good! 60W in truth are only 30W sound volume or even less! Sounds like a toy at all!