[oberheim] Re: Matrix-6/ -6R tuning
2013-01-12 by Jill Saphic
well then! quite the list of hot tips for the Matrix! thank you to David,Peter,Paul & Wesley alright then, I have a question, sparked by the last response.
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Re: Matrix-6/ -6R tuning
2013-01-11 by wesleyknick
An effective and easy repair if you re solder saavy in the event a broken pin, is to put a small puddle of solder on the upper end of the wider metal tab above
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Peter Mörck
I don t think that s necessary. Just start by pressing the chips back in the sockets a bit instead of removing them. If removed, I d handle them as little as
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Loveslap! Recordings
and once I remove the chip should I apply any kind of product? deoxit for example? ... -- ** Loveslap Recordings ** updated website!! : **
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Paul Cunningham
Use an IC Extractor tool and BE VERY CAREFUL. Practice on something you don t like first. It s very easy to break those old pins off. -pc ... Use an IC
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Loveslap! Recordings
how do you do it without breaking the pins off? ... -- ** Loveslap Recordings ** updated website!! : ** http://www.loveslap.com ** like us on facebook: **
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Peter Mörck
Also please note the crappy IC-holders the CEM3396 chips are sitting in. Giving the chips a few firm pushes with your thumb (or completely remove them and put
Re: [oberheim] Matrix-6/ -6R tuning
2013-01-11 by Dave Garfield
Hi Jill, and other Matrix-6/-6R owners, Having owned my M-6 since 1986, I ve learned a lot about its quirks. One of those is the tuning... At times it
[oberheim] WTB: Multiple Oberheims etc
2013-01-11 by Jill Saphic
yeah.... my first job in the states, I went to the local music store and picked up an OLD matrix-6, and a Matrix-6R, That was super! then traded them both in
Re: [oberheim] WTB: Multiple Oberheims etc
2013-01-09 by Les Lambert
Yes I expect multiple Oberheims to sound magnificent. Since the OBXa offerred doubles and splits I ve been trying layers of patches, but I m often
Re: [oberheim] WTB: Oberheim Matrix 1000
2013-01-08 by Paul Cunningham
They are typically going for $350 to $500 on eBay and are generally in great working condition despite some rack rash. I m up to four of them and their sound
Looking for OB-SX voice cards Version 1434A
2013-01-08 by Thomas
Hi guys, just received some new voice cards for my OB-SX, but they are probably from an earlier version and have the number 1434. My late blue stripe, 56
Re: [oberheim] WTB: Oberheim Matrix 1000
2013-01-07 by Les Lambert
Where are you? I have one I could sell, and am in London ... From: fatdub11 Subject: [oberheim] WTB: Oberheim Matrix 1000 To:
WTB: Oberheim Matrix 1000
2013-01-06 by fatdub11
Hi, I m looking for Oberheim Matrix 1000. thank you
Re: [oberheim] Digest Number 690
2012-12-30 by Steve Mays
I ve had my 1000 do this. I would turn it on and start playing. After 30 seconds or so random notes would be softer than others. Drove me nuts as I thought it
Re: Matrix 1000 weirdness
2012-12-28 by Dubravko
Hi, I have somewhat similar problem. Below certain and not always the same key my Matrix 1000 generates tones of significantly lower volume. Could be they are
Oberheim MiniGrand Manual or Factory Reset
2012-12-26 by Larry
Hello, I recently purchased an Oberheim MiniGrand Module. One of the electronic piano patches has been altered and is not working properly. I have been unable
RE: [oberheim] Matrix-12 Sound Then No Sound - Help Please
2012-12-24 by synthwalker
Did you try to reset the M12 (switch on while depressing the CLEAR switch – then answer YES) ? De : oberheim@yahoogroups.com
[oberheim] Matrix-12 Sound Then No Sound - Help Please
2012-12-24 by Michael Padilla
Hi everyone. I am experiencing an issue with my Matrix-12, the first issue it has ever had. I sincerely ask that our esteemed panel of OB experts please
Matrix12 Schematics
2012-12-23 by enomys73
Hi, I m looking for the schematics of Matrix12, or a service manual.. Can you help me? Thanks so much Simon
Re: [oberheim] Re: Looking for OB-MX voice cards
2012-12-10 by Rita M. Barker
Still trying to get OBMX voice cards... Does anyone have any leads? ________________________________ From: Thomas Heckmann To:
Re: Looking for OB-SX voice cards
2012-12-07 by Thomas Heckmann
HI, no, the cards are not the same. The OBXa has two filter chips and the OB-SX one i.e. The OB-SX is also more or less a mix of the OBX and the OBXa. It still
Re: [oberheim] Re: Looking for OB-SX voice cards
2012-12-07 by Steve.S
No, they are definitely not the same, similar, but not the same Steve ... From: wesleyknick Subject: [oberheim] Re: Looking for OB-SX
Re: Looking for OB-SX voice cards
2012-12-07 by wesleyknick
If I m not mistaken the OB-SX uses the same voice cards as the OB-Xa. Am I correct on this? Anybody care to comment?
Looking for OB-SX voice cards
2012-12-05 by Thomas
Hi guys, so as I repaired my OB-SX today (besides trying to fix the OBXa) I m now looking for more voice cards for the OB-SX. Mine only has a poor one
Re: [oberheim] Re: OB-Xa Repairs.
2012-12-05 by Steve.S
1.)check for any solder shorts on EPROM and CPU 2.) meter top pins of EPROMs to the underneath of the PCB connections for IC socket tests, likewise the CPU
Re: [oberheim] Re: OB-Xa Repairs.
2012-12-05 by Les Lambert
I can t help you directly with your problem, but wanted to add a note of caution. If a problem in your current OBXa has been caused by a defective component
Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by wesleyknick
Call me a dummy cause I m certainly stumped... Sorry to hear my suggestion didn t pinpoint the issue. Anything can be fixed just some problems take longer to
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by Martin Ator
What is the function of the LM311 in the circuit? (If I had a teleporter I could pop round with my Boardmaster 4000) ________________________________ From:
Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by Doug
The crystal was Ok. Measured 2.456 MHz at pin 6 Z80 (divided by 2 by IC A116). CPU reset circuit is OK A Christmas tree ornament sounds like a good idea. Doug
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by Martin Ator
Just looked at the schematic and it doesn t have the usual way of putting capacitors on each leg. Don t forget to double check the little reset hold circuit on
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by Martin Ator
It s got to be something easily overlooked. There s so many socketed IC s maybe a pin has been bent over etc. I would check the X-tal. The system isn t booting
Re: OB-Xa Diagnostic EPROM needed
2012-12-04 by wesleyknick
Doug, I ve been following the email traffic on this issue rather sporadically however now that you ve described in detail again I can certainly say I have a
Re: OB-Xa Diagnostic EPROM needed
2012-12-03 by Doug
Since I don t own this keyboard I may have to call it a day soon. I tried removing the MIDI board and burning the 3 EPROMs from
Re: OB-Xa Diagnostic EPROM needed
2012-12-03 by synthparts
Those B5 ROMs are for the OB-8 not OB-Xa. Anyway I have the ROMs for the OB-Xa with JL Cooper MIDI and Rev C processor board if you need it. Doug
Re: OB-Xa Diagnostic EPROM needed
2012-11-30 by wesleyknick
OB-Xa EPROM image (Rev C) is available here if interested: http://www.lazyblueoctopus.com/html/oberheim.html
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-11-30 by Martin Ator
If you have an Eprom reader then there would be no harm in trying to read them off. You can then try and verify the buffer with the Eprom, or look at the read
Re: OB-Xa Diagnostic EPROM needed
2012-11-30 by Scott
I d go through the two motherboards, pull every socketed chip and clean the pins with an artist s eraser, wipe with alcohol and reinstall before I started
Re: OB-Xa Diagnostic EPROM needed
2012-11-29 by Doug
Hi Martin, thanks for your suggestions. The reason I suspect the EPROM is because of experience with a Textronix 468 digital scope. It was suggested that I
Oberheim Prommer OS EPROM
2012-11-28 by Thomas
Hi guys, just wanted to copy a few EPROMS today and sadly my Prommer has stopped working :-( Does anybody have one and could copy the OS EPROM for me ? I had
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-11-28 by rob hukin
Hi Doug, The B5 images are available from Magnus Danielson s site - http://rubidium.dyndns.org/~magnus/synths/companies/oberheim/ rob. ... Hi Doug, The B5
Re: [oberheim] Re: OB-Xa Diagnostic EPROM needed
2012-11-28 by Martin Ator
It s probably something to do with the Midi mod so have a look around for anything suspicious, wires/broken tracks etc. It s very rare that you get problems
Re: OB-Xa Diagnostic EPROM needed
2012-11-28 by Doug
Yes, my best guess is that it is a bad EPROM. Unfortunately I don t have the image files for the MIDI version. I have image files for the original so I tried
Re: [oberheim] OB-Xa Diagnostic EPROM needed
2012-11-27 by Paulo Palmieri
I don´t have the eprom but have an OB-Xa with the same problem. In my case the buttons are working but the leds are flickering too and after 20 minutes they
OB-Xa Diagnostic EPROM needed
2012-11-27 by doug1052365
I m trying to repair this OB-Xa w/JL Cooper MIDI. Has no sound, all LEDs are flickering, buttons don t change anything. The power supply is OK. It seems the
Cyclone Midi Setup
2012-11-14 by nicknak110756
Hi Folks. I ve just got myself a Cyclone which im very happy with. Im hoping someone can assist me implementing it into my set up. I have it hooked up to my
FS\FT: Oberheim Minisequencer CPS-2
2012-11-06 by Jason
I am selling my Oberheim Minisequencer Model cps-2. It is factory cased and powered from 1972. The outer case has a few abrasions.The face is very clean. The
Morphogenic (DiN41) by Parallel Worlds & Dave Bessell Now Available for purchase.
2012-10-20 by Bakis Sirros
(posting here because the album is full of analogue modulars - Doepfer, Buchla, Serge, others - and various analogue mono & polysynths, gearlist used, below)
Re: [oberheim] trying to diagnose generall weakness of my matrix 12
2012-10-18 by carl hourigan
can u guys PM, your filling up my email! ha! ... can u guys PM, your filling up my email! ha! On Oct 18, 2012, at 2:56 PM, Martin Ator wrote: EDIT: How similar
Re: [oberheim] trying to diagnose generall weakness of my matrix 12
2012-10-18 by Martin Ator
EDIT: How similar is the Matrix 12 to the Expander? I thought from pictures of the Matrix 12 internals I d seen that the volume control was a potentiometer.