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voltage control
Joined: Mar 11, 2010 Posts: 13 Location: another world
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Posted: Fri Jun 10, 2011 2:33 pm Post subject:
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Sorry, but I did not take pictures there. Basically you have no choice anyway: everything has to be removed before you put the new one in. But if you use the cutting-through-the pins method as I did to remove the chip, you will get a clear view of the field once the chip body is removed and you can figure out all the connections from there. (I am pretty confident that the board is traced on 2 sides only and that there is no triple layer, at least not in the area we are dealing with) . For cutting the pins, use a fine sharp knife and don't apply too much pressure. Rather cut though the pins with multiple shallow cuts as opposed to one deep cut. The chipquick desoldering material that is demonstrated at the curious inventor website might be a safer way to remove the chip by the way. I first tried a desoldering vacuum pump and solder wick to remove the IC but this did not feel like it was going to work out well, so I decided to cut through the pins.
I know this stuff feels kind of like like jumping in the cold water. I have done a lot of soldering on electronics and I always thought that this fine stuff was suitable for robots only. But after having replaced this USB chip, I am quite surprised at how easy it actually turned out to be. I hope to be hearing the next succes story from you Neon Sega! |
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kslight
Joined: Feb 23, 2009 Posts: 41 Location: KC
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Posted: Sun Dec 11, 2011 4:35 pm Post subject:
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I was able to replace my USB port on the G2 engine fine. Tedious but well worth no throwing the unit away, you know? I think any competent tech should be able to do this for you at a reasonable charge if you do not feel comfortable doing it yourself. |
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spixycat
Joined: May 06, 2012 Posts: 9 Location: Netherlands
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Posted: Tue May 08, 2012 2:28 pm Post subject:
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I bought a dead board for a $1 a while ago, this might be the problem with that board which schematics are here :
http://tiny.cc/or6vdw
are you guys talking about the same board? U24 is the USB controller I think but I can't see on the schematics that it is a ISP1181BDGG on "my" PCB there is a PDIUSBD12 from Philips
Question : since I've got only the PCB: can I control the Nord Electro 2 Main board from a PC via USB when there is no Control panel at all attached? |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Tue May 08, 2012 2:33 pm Post subject:
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spixycat wrote: | are you guys talking about the same board? |
Nope, a Nord Electro is not a Nord Modular 2 - it may still use the same USB circuitry of course ... _________________ Jan
also .. could someone please turn down the thermostat a bit.
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spixycat
Joined: May 06, 2012 Posts: 9 Location: Netherlands
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Posted: Tue May 08, 2012 2:50 pm Post subject:
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thanks blue hell: sorry but I am a greenhorn can you suggest where I can post my Nord Electro 2 questions?
Sorry for interrupting guys and will done those brave hearts that replaced the USB controller chip them selfs.
What an option could be, or no, what you always can do is practice using an old router or whatever with a similar housing (TSOP) and practice, try it and when confident start working on the real board.
I would suggest to use a Dremel and put it on max speed and cut very carefully the chip appart so that only the pins from the chips are still there, take them away uing a weller with a very fine tip (0,8 mm) one by one. Another option is to add more solder carefully and quickly and use a ie dentist hook to bent each "pin" one by one.
When all the pins are gone : use de-solder wire that will suck up the remaining solder, see http://youtu.be/2hpHez1I2rc but note: don't cut that desolder wire but move it along when it is filled with solder so that u need to heat the pin up only once (because they are tiny heating them up as shown in that video is sufficient, the PCB used in the video is an old model)
Hope this helps and these are my 2 cents... |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Tue May 08, 2012 2:53 pm Post subject:
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spixycat wrote: | can you suggest where I can post my Nord Electro 2 questions? |
Sure
I'll move this thread to a better place. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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spixycat
Joined: May 06, 2012 Posts: 9 Location: Netherlands
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Posted: Tue May 08, 2012 2:54 pm Post subject:
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dank je Jan |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Tue May 08, 2012 2:56 pm Post subject:
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Hmm, we dont have an electro-spot ... this will have to do I guess, Wout that OK? _________________ Jan
also .. could someone please turn down the thermostat a bit.
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Tue May 08, 2012 2:58 pm Post subject:
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Hmm .. I moved the wrong one
Lemme see what I can fix _________________ Jan
also .. could someone please turn down the thermostat a bit.
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exeterdown
Joined: Oct 13, 2013 Posts: 49 Location: Melbourne, Australia
G2 patch files: 3
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Posted: Sun Jan 05, 2014 1:17 am Post subject:
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Had posted this:
http://electro-music.com/forum/topic-60701.html
But then found this thread.
I guess I feel a lot better knowing it's a known issue.
Is there a particular cause or was it inevitable mine would die?
I'm not confident to DIY, what kind of tech am I looking for if I wanted someone else to do it?
Is there a G2 schematic pdf or any info I could give to a tech if I found one?
Thanks! |
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LLR3
Joined: Sep 10, 2004 Posts: 41 Location: Helsinki Finland
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Posted: Tue Jan 14, 2014 5:03 am Post subject:
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Authorised Nord repair centers have an inexpensive routine fix for the problem. Fried USB chip gets replaced with a fresh one and also an additional patch (hehe!) is put into place to make sure the same won't happen ever again!
My second Engine (s/n 502) USB got fried pretty soon after I got it a year ago. The previous owner told the unit had stayed in the rack mostly untouched. (Original firmware was still in place and no user patches had been saved on board.) My first Engine (s/n 027) has never had any problems despite having been in pretty much daily use since - err - was that 2005 the G2 Engine came out?
PS. It seems I have a bit of a blind spot on "pinned" but still active threads. I wish even the pinned threads would appear on the regular active topics list when a new post is made. |
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drxcm
Joined: Jun 13, 2006 Posts: 25 Location: Hamilton, New Zealand
G2 patch files: 2
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Posted: Sun Jun 08, 2014 1:48 pm Post subject:
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Does this just affect the Engine, or does it affect the G2 keys too?
Is it an inevitable failure?
Is there anything you can do to 'protect' against a problem?
Many thanks! |
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exeterdown
Joined: Oct 13, 2013 Posts: 49 Location: Melbourne, Australia
G2 patch files: 3
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Posted: Tue Nov 11, 2014 4:27 am Post subject:
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I sent mine to the local Akai and Clavia dealer and they posted it off to Clavia in Sweden. I got it back about a month later and it cost me about AU$400. I am so happy to have it back. Bought a G2 Engine to pass the time ;p |
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Nemydom
Joined: Mar 23, 2015 Posts: 2 Location: Auckland
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Posted: Mon Mar 23, 2015 7:12 pm Post subject:
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I spent 4 hours with my new, second hand nord engine, but could not make it working.
It seems something wrong with it. The power led is 'on', but that's it. I try to connect it by different usb cables to 3 different computers, win 7, mac and Xp, but there is no result: the computers don't see it via usb and the usb led doesn't light up. It looks like it is not discoverable via usb, so I can't even install the driver.
I also connected it by MIDI cable to my other synth - there is no sound and the midi led doesn't light up.
I've also done everything to enter Update Mode manually as per page 140 of the user manual v1.40:
"On the G2 Engine, press the “hidden” button inside the hole to the right of the G2 logotype and power on the synth. First, the MIDI LED lights up, then the USB LED lights up and finally both LEDs light up."
Unfortunately its not happening: when I power on the synth with the pressed “hidden” button - the both MIDI and USB LED do not lights up.
I know it can be difficult to connect it to a modern computers, that is why I try WIN XP... But the problem entering the Update Mode manually looks like a real trouble.
What do you think about it? |
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exeterdown
Joined: Oct 13, 2013 Posts: 49 Location: Melbourne, Australia
G2 patch files: 3
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Posted: Mon Mar 23, 2015 7:18 pm Post subject:
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I'd talk to the person you bought it from or email Clavia. |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Tue Mar 24, 2015 11:42 am Post subject:
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On the Mac (OSX 10.5.8 and 10.10.2 tried here) you do not need drivers, and the USB light on the G2 will only go on when you run the editor software.
But it is odd the the PCs do not show the "New Hardware found" dialog - that is not very promising _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Slyde
Joined: Jul 23, 2008 Posts: 7 Location: Auckland, New Zealand
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Posted: Wed Mar 25, 2015 12:05 am Post subject:
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Hi, I'm the guy that sold him the unit second hand, how embarrassing as it was working fine last time I used it a few months ago. We took the top off the unit tonight. It definitely powers up and the power LED comes on, but it won't receive on USB or Midi, so I think this is more than just a fried USB chip. The midi and USB LEDs never light with any type of connections.
The connector from the power board to the main board seems to be OK and I can measure a little voltage at some of the pins on the expansion socket so I am ??presuming??? that power is getting to the main board.
Any bright ideas anyone??
Cheers
BTW I gave him his money back |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Wed Mar 25, 2015 2:40 am Post subject:
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At power on .. do the MIDI and USB lights go on momentarily? _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Slyde
Joined: Jul 23, 2008 Posts: 7 Location: Auckland, New Zealand
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Posted: Wed Mar 25, 2015 12:30 pm Post subject:
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No, nothing. But you can hear a little momentary noise if you put on headphones and turn the unit on. |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Wed Mar 25, 2015 12:37 pm Post subject:
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Looks like the control program does not run then on the main board ... hmm its a long time ago since I opened an engine . .there are no ICs in sockets I think ... when there are they may have come loose during transport ... or any thing socketed in fact. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Wed Mar 25, 2015 12:39 pm Post subject:
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Did you measure the supply voltages as they come out of the PSU? I think there are labels on the PSU stating what they should be ... _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Slyde
Joined: Jul 23, 2008 Posts: 7 Location: Auckland, New Zealand
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Posted: Wed Mar 25, 2015 3:29 pm Post subject:
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I'm no expert and didnt see any printed specs but I got between 16 and 18 volts across the pins where the cable joins the power board to the main board. |
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Slyde
Joined: Jul 23, 2008 Posts: 7 Location: Auckland, New Zealand
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Posted: Wed Mar 25, 2015 3:31 pm Post subject:
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Yeah there didnt seem to be anything loose and everything looks mint, no dust etc. I even took out the boards and examined the solders underneath, all mint. |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Wed Mar 25, 2015 4:04 pm Post subject:
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Hmm .. ok ... 16 - 18V .. I hope not that seems a bit much ... way much.
Better let an expert look at it. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Fayette
Joined: Mar 14, 2014 Posts: 7 Location: denmark
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Posted: Thu Mar 26, 2015 7:40 am Post subject:
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this just happened to my g2... no more usb connection... went to my local clavia support store, but it doesn't sound like they are able to deal with it, something about the usb thing that's so small they were scared to deal with it... fuck, what do I do... the G2 is the center of my studio, everything I do evolves around it and I cant afford a new one... holy shit this sucks major ass
:'( AAAARGH
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