Arturia Forums
Hardware Instruments => MiniBrute => MiniBrute Technical Questions - FAQ => Topic started by: sslneve on October 21, 2013, 04:50:58 am
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Hello folks,
My minibrute was doing all good, but yesterday suddenly the Filter mode knob (LP/BP/HP/NOTCH) behaviors not working.
LP/BP/HP position, there will be no sound.
only Notch filter mode the sound would be.
Please help me. I tried fresh firmware update (1.0.21 -> 1.0.21) but it was no good.
thanks in advance.
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take a picture of your front panel and upload it.
it sounds like you have a problem with your patch, NOT with your hardware.
but you never know
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I am having the same problem. Anybody else have something like this happening?
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Bump
Anyone has resolved this issue? please help me.
Mine is still not working :(
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take a picture and upload it...it's 99% likely that it's user error.
this is not an issue that has been widely reported...and when stuff like it has been mentioned it turns out to be a simple fix based on the patch , etc.
just take a pic and upload it...
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http://www.mediafire.com/download/u0za2cqaazpe396/5030.jpg
Please right-click to save the pic.
This is the patch I've tried.
It would sound perfectly at 'Notch' filter position, but on LP-BP-HP mode, it produces nothing.
Two envelope LEDs are flashing, so I found that my internal keyboards cable connection is OK.
please help..
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help?
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sslneve,
I tried your patch. (Sounds great!)
Filter mode knob works as expected and changes the sound.
If you were to start with a totally simple patch - the saw with no filter envelope, 50% cutoff, 50% res - and change the filter mode, do you hear anything on LP, DP, HP? Or is only notch working on all patches?
When you say you get nothing, is it total silence? Can you hear the amp clicking, any of the oscillators?
The mode knob is not not something that firmware should affect - I believe the modes are analog, hardwired to the selector knob.
I think if you've tried everything and only Notch produces sound, you need to get a support ticket started.
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sslneve,
I tried your patch. (Sounds great!)
Filter mode knob works as expected and changes the sound.
If you were to start with a totally simple patch - the saw with no filter envelope, 50% cutoff, 50% res - and change the filter mode, do you hear anything on LP, DP, HP? Or is only notch working on all patches?
When you say you get nothing, is it total silence? Can you hear the amp clicking, any of the oscillators?
The mode knob is not not something that firmware should affect - I believe the modes are analog, hardwired to the selector knob.
I think if you've tried everything and only Notch produces sound, you need to get a support ticket started.
Thank you for kind support!
I've tried your basic patch. The result was same. No sound on LP-BP-HP position.
And I found that it is not total silence. The led on my analog mixer was lit a little bit (very small signal) when I heard nothing with my ears.
I think this is an obvious hardware issue.
I'm aware of the keyboard problem (which can be solved by re-connect internal cable), but this issue makes me very frustrated..
Actually I can't contact any authorized technician on my location..
More ideas on this? I really wanna sort this out..
So desperate..
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If you've already opened the MiniBrute up and tightened cables, I'm not sure if there's anything else user-servicable.
The filter mode knob has 4 detents (the click where the filter modes made contact) and dead space between them, so you can't select 2 modes at the same time.
When the mode knob is forced into dead space between filter types, the audio path is normally bypassed. I can hear faint clicking, but no real audio.
Is it possible your mode knob is somehow damaged or shorted? Can you look at the PCB near the mode knob for anything visually damaged? (Like a keyboard weight that got into the circuit area, or corrosion?)
Someone with a soldering iron and a clue please chime in!
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4th from top right - anyone know if that is that a trimpot next to mode?
http://medias.audiofanzine.com/images/normal/arturia-minibrute-354027.jpg
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If you've already opened the MiniBrute up and tightened cables, I'm not sure if there's anything else user-servicable.
The filter mode knob has 4 detents (the click where the filter modes made contact) and dead space between them, so you can't select 2 modes at the same time.
When the mode knob is forced into dead space between filter types, the audio path is normally bypassed. I can hear faint clicking, but no real audio.
Is it possible your mode knob is somehow damaged or shorted? Can you look at the PCB near the mode knob for anything visually damaged? (Like a keyboard weight that got into the circuit area, or corrosion?)
Someone with a soldering iron and a clue please chime in!
T3k, thanks again.
I confirmed that Filter knob itself is totally detented and cannot be on 'dead' position naturally..
I didn't drop the unit to the ground, and of course there was no shock or impact.
Strange thing is, my Minibrute was so fresh and rock solid at first..
Maybe I have to open the bottom and look into the circuit board which you pointed. What a disaster..
Feeling so much pain..
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Arturia support team, please?
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hey sorry i didn't reply sooner.
yeah there's nothing wrong with that patch...
just another case of faulty minibrute. and i haven't heard great things about sending arturia units in for repairs recently....doesn't look good / idk what to say.
open a ticket with them and goodluck
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sslneve - i have exactly the same problem. If you do get to the bottom of it, please share. Good luck!
I opened a ticket and am waaaaaiiitiiiiing.
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Really unfortunate that this thread has been around for over a year and no solution by Arturia has been posted yet or at the very least, acknowledged. Now I get to join the club. Turned on the brute in the studio today and discovered I'm having the exact same issue with the filter (only makes sound with the notch selected). Just filed a ticket with support. I'll see where that goes. Hopefully this is an easy fix and not a component gone bad.
Any more info please post.
Cheers all!
j.
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sslneve - i have exactly the same problem. If you do get to the bottom of it, please share. Good luck!
I opened a ticket and am waaaaaiiitiiiiing.
Hello we're in the same boat :(
Actually I didn't solve anything (I did everything..).. I also did not open the ticket.
So let's see what happens. Maybe I will open the ticket.
So frustrated..
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Open a ticket. I've been back and forth for the last 12 days with them. But they have yet to suggest anything to me other than it needs to be looked at by Arturia. The more tickets that are opened about this issue the better. At least they'll have to acknowledge there's an issue with some of the units.
Growing frustrated!
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Open a ticket. I've been back and forth for the last 12 days with them. But they have yet to suggest anything to me other than it needs to be looked at by Arturia. The more tickets that are opened about this issue the better. At least they'll have to acknowledge there's an issue with some of the units.
Growing frustrated!
Any updates? Please let me know.
I still didn't open the ticket..
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FYI
This could be related to a defective potentiometer, in this case we need to change it, so if for anybody this happens on your unit:
Send an email to the support with:
- the serial number situated underneath the unit
- a description of the problem
- your address
- your phone #
- a proof of purchase
==> technical-inquiry@arturia.com
:)
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Hello,
I think I have this problem.
I am waiting to hear back from emails I sent to Arturia...so I made this video:
https://www.youtube.com/watch?v=2IzHBewgSbI (https://www.youtube.com/watch?v=2IzHBewgSbI)
Please advise.
Thank you!
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Hi,
I also have this problem.
my Minibrute just puts out normal volume only when the filter mode switch is set to 'notch'. All other settings lead to barely audible output. This never happened before.
I already opened a case and will send the e-mail requested above, but perhaps someone here has a quicker idea.
I haven't changed anything else, and the back switch setting makes no change whatsoever (it is and was set to KBD anyway, but I also tried it with Hold and Audio).
I'd be so thankful for help. I just wanted to record something but that is now not possible :-[.
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i have same issue with mine too. would local electrician solve this problem? seems like some sort of circuit problem.
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I was told by Arturia customer service that, and I quote, "This is a defective switch, it can happens."
I doubt the problem lies in the circuitry, since 3 filter circuits failing at once with one remaining intact would be a very strange coincidence indeed.
Anyway, I have an appointment with a synth tech tomorrow who will - hopefully - fix it.
I'll keep you updated once I have further information.
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Hi everyone,
I'll keep you updated once I have further information.
I tend to keep my promises, so here goes:
I got a phone call from the tech today, and I think I may have some good news.
My initial thought was confirmed: According to the 'Filter' schematic that can be found here (http://hackabrute.yusynth.net/index_en.php?&arg=1), 'Notch' is nothing but LP and HP used simultaneously. So if 'Notch' works, the filter circuits for LP and HP must be OK. The tech found the filter switch itself to be faulty, which confirms what Arturia's customer service already told me (see my previous post).
As a makeshift solution, he has now bridged (i.e. soldered a direct and firm connection between) positions 6 and 10 of the switch, which means the filter is permanently set to LP. This is a relatively simple and cost effective solution for those of us who use nothing but the LP mode anyway (hey - many analog synths don't even have the other three ;)).
A complete solution means we need the switch and the ability to replace it on the PCB (or someone who can do it).
To me, it seems most likely that Arturia received a poor quality batch/shipment of these parts from their suppliers - which is not Arturia's fault (but neither ours).
I think it would be a good, fair and customer friendly move to make them available for us at a very reasonable price. After all, we still have to pay the techs for replacing them, plus all the hassle ;).
I really hope this information is valuable for all of you that encounter(ed) that problem!
Be aware that the above mentioned procedure is not recommended if your Minibrute still has warranty, since that repair will most certainly render all warranty claims void!
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I'm having the same problem, just surfaced today, submitted a ticket, has anyone resolved this issue yet?
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Same here. Can someone from Arturia share a link to the part or the part number?
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I had the same problem with the pot after my warranty expired and replacement part was sent by Arturia via surface mail. I got it replaced by the authorized dealer here (requires soldering) and it works fine now.
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I have the same problem on mine Arturia, is unbelieveble I've used the minebrute very few time that's not possible!!
What Can I Do? Have fix the problem changing the knob on PCB?
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Today I tried to setup Analog Four CV out to Minirbute CV Pitch and Gate .... and ... very very low sound. Only at Notch position I get something like a "sound". Same when I'm playing on the Minibrute keys.
I found out that pushing the Filter Swicht a bit brings the sound back. So I guess there is a technically problem with the knob.
Did you find any solutions??
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I have opened a ticket to report a faulty Filter Mode switch on 1 July: Case 290315
I have not heard back from Arturia.
Has anyone had any luck with replacing the Filter mode switch?
Can a part be purchased for this? If so, what is the part number?
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Jerome from Arturia responded to this query.
The replacement filter knob/rotary switch can be purchased at Mouser Electronics, part:
http://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0204-20F0A-N9-N-027/?qs=%2fha2pyFadujuSFdWxZdTftuAGiL2g07YstDMm4YthCtPhOR3DkdiOMsw6dF8rLoU2%2fYrf1MZAoa%2fEkHsKO2s21d9EnSZgSAeyStxqqgPsOdf%2fz4gkJ2MF%2fqQlPkQ%252bekI (http://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0204-20F0A-N9-N-027/?qs=%2fha2pyFadujuSFdWxZdTftuAGiL2g07YstDMm4YthCtPhOR3DkdiOMsw6dF8rLoU2%2fYrf1MZAoa%2fEkHsKO2s21d9EnSZgSAeyStxqqgPsOdf%2fz4gkJ2MF%2fqQlPkQ%252bekI)
If you're based in NYC, Main Drag Music is pretty much the only place that is willing to replace it.
Main Drag Music
330 Wythe Ave.
Brooklyn, NY 11249
www.maindragmusic.com
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Oh no...I'm facing the same issue with my Minibrute :'(
Have any of you guys managed to fix it?
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I have the same issue on my Minibrute and it's because of a faulty Filter Mode knob.
Arturia answered my message, opened a ticket and exchanged two emails with me to make a correct diagnosis.
They're sending me a Filter Mode knob today.
The process took 4 business days so I'm really happy, almost impressed, with customer support (in France btw).
EDIT: received my knob in less than one week and soldered it.
It was not very difficult except that I found the solder on the clamps of the defective knob (not the connection pins) to be resistant at less than 30W.
Everything is working fine now
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I've had my Minibrute since 2013, and just had this happen today for the first time. Arg!
No sound unless filter mode is "Notch". If I put pressure down on the knob in the other modes, I can hear the sound blip for a moment, and then it's gone again...
I will be in touch with Arturia for a replacement part.
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Reviving this thread. Just today the same happened on my Minibrute.
I was happy to see Mouser part being posted here. As my Minibrute ages I'm more and more worried, because now this switch died and the noise source behaves in an erratic way, sometimes bright, sometimes all dark and popping. But at least I now have a good reason to open it up, fix that noise issue, too (hopefully) and while I'm at it I'll change the pot for LFO to Pitch amount so that it will bring the mod in more gradually.
Thanx.
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Hello everyone. Sad to see all of these issues over the years.
I am having a slightly similar problem, except the filter select knob does not appear to impact any sound change when moving between LP HP BP Notch. I do, however, get sound out of selecting each mode.
At first, I thought I was having a sound level issue. Then, after more investigation, I discovered that the filter selection knob is not working as expected. Also, another odd aspect of my problem is that if I put the cut off frequency in ~12 o-clock and crank up the resonance, the sound comes BLASTING out.
I wondered if anyone else saw something similar to my issue and if replacing the Filter Mode rotary knob did the trick.
Thank you for your help.
UPDATE: After reading the forums and playing with my filter selection knob, I was able to hear it pop and blast some additional sound through, so I think this is my problem. Just ordered a new switch based on xanderhing reference, the SR1712F-0204-20F0A-N9-N-027, from Mouser: https://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0204-20F0A-N9-N-027
I will report back how it goes.
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Not sure if my problem is the same, but it seems like the filter cutoff for some reason was set very low, so that even in LP mode, if I turn cutoff to idk... 5 oclock (100% open), it still low-passes most of the signal. AND when I switch to bandpass, it is only responsive when the filter is between 7 and 11 oclock - while still bypassing any signal beyond like 300hz.
Interestingly, and to support the diagnosis that the cutoff frequency is somehow like ..2 to 3x lower than it should be, when I turn the sub oscillator on, the signal is boosted big time. Super boomy and low.
Could this be the same problem or a combination of the filter switch problem and a filter cutoff problem?
https://www.youtube.com/watch?v=92VX0ksLQ4o
I made a ticket but by the sounds of things support is dicey at best. Shame, the whole reason I busted out the minibrute again was cuz I was looking at buying a Polybrute and remembered that I love the MB and wanted to jam :'(