Re: M6R Help
2019-11-07 by baritonomarchetto@...
As far as I know, there are no good scans of M6/M6r schematics, but as you noticed, you can refer to the M1000 schemes. Chips are labeled differently, but
Messages
Browse messages
Page 1 of 51 · 2518 messages matched
Re: M6R Help
2019-11-06 by andy.birko@...
Thanks - I ve already swapped the 3396 and the problem stayed with the voice, not with the 3396. I just ordered a semi ok scope from banggood but it won t be
Re: [oberheim] Re: M6R Help
2019-11-06 by José Ángel Morente
Although it’s a completely different architecture, I experienced a similar issue (identical symptoms) on my Prophet-600 some years ago and replacing the 4051
Re: M6R Help
2019-11-06 by mrspring_eire@...
Swap the CEM chips about, and see if the fault moves with the chip. If it s the channel and not the chip, then replace the MC14051BCP (8 channel mux/demux
Re: [oberheim] M6R Help
2019-11-05 by Florian Anwander
Hi Jose you were not wrong. The CEM3396 can not oscillator by itself. And a DCO always consists from two components. 1.) a digital controlled divider (8253 or
RE: [oberheim] M6R Help
2019-11-05 by Scott Rogers
I’m sure you’ve already done this but it’s worth saying just in case… before doing anything make sure you run the calibration. I’ve fixed many very
Re: [oberheim] M6R Help
2019-11-05 by José Ángel Morente
I was definitely wrong then; I always thought the CEM3396 had waveshaping capabilities but it couldn t oscillate by itself. Thank you for the information. On
Re: [oberheim] M6R Help
2019-11-05 by Peter Mörck
It s CEM3396 which is a synth-on-a-chip; 2xDCOs, VCF, VCA, all in one. Pretty much the definition of a voice chip. Individual clock inputs for the 2 DCOs. So
Re: [oberheim] M6R Help
2019-11-05 by José Ángel Morente
What CEMs are the wrong frequency? Aren’t the M6 oscillators DCOs? If i’m not wrong, the CEM chips you talk about should be filters or maybe VCAs but no
Re: [oberheim] M6R Help
2019-11-05 by Florian Anwander
hello since it is a DCO the only possible fault should be the programmable interrupt timer 8254. Florian ... -- http://www.florian-anwander.de
Re: M6R Help
2019-11-04 by narfman96@...
Sorry Andy everyone who joins is under moderation. I was hiding in the deep woods all weekend.... You may now post freely. Fran ... Tried to send a message
M6R Help
2019-11-04 by Andy Birko
Tried to send a message before but it seems to have been lost. Picked up a used M6R with a couple bad voices. Voice 2 was dead and just needed a re-seat of
RE: [oberheim] Matrix 12 factory patches
2019-10-30 by Nicole Massey
Right, but you don t have to have a Yahoo mail address. Sent from my HAL 9000 in transit to Jupiter ... From: oberheim@yahoogroups.com
Re: Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-30 by F.Manduca
Eternally grateful. Inviato da Yahoo Mail su Android
Re: [oberheim] Matrix 12 factory patches
2019-10-30 by José Ángel Morente
Yes you do. You can subscribe to the mailing list with a regular email address, but you need a Yahoo account to gain access to the other stuff (files, photos,
RE: [oberheim] Matrix 12 factory patches
2019-10-30 by Nicole Massey
Not that I know of. Sent from my HAL 9000 in transit to Jupiter ... From: oberheim@yahoogroups.com [mailto:oberheim@yahoogroups.com] Sent: Tuesday, October 29,
Re: [oberheim] Matrix 12 factory patches
2019-10-29 by oozy music
Thank you Nicole! For some reason the file section is greyed out for me. Do I need to have a Yahoo email in order to access it ? On Tue, Oct 29, 2019, 6:10 PM
Re: Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-29 by Max Thompson
I m going to make a complete archive of this group (files, messages, attachments, photos, and links) for you all. I d suggest you check with the Musicplayer
RE: [oberheim] Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-29 by Nicole Massey
I d be interested in this move, though right now it s my understanding that Groups.io has raised their cost of their premium package, which is required to use
RE: [oberheim] Matrix 12 factory patches
2019-10-29 by Nicole Massey
Jumping back on the original topic, the Matrix 12 factory patches are, at least according to the file description, in the files section of this group. Sent
Re: [oberheim] Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-29 by Florian Anwander
Hello, I could create an html-based archive of the messages of this yahoo-group, if the group owner can make the messages visible to non-subscribers (including
Re: Matrix 12 factory patches
2019-10-28 by maxibillionthompsonmusic@...
Hey all, I m going to try and archive this entire group using PG Offline. I ve successfully archived seven other groups as of now and so this is going to be on
Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-28 by zaphod42@...
Hi Guys, I am a member of many synth other groups on Yahoo, and as most of you are aware that Yahoo have made a decision to stop hosting user content starting
Starting December 14, 2019 Yahoo Groups will no longer host user created content on its sites.
2019-10-27 by Colin Leak
Hi Guys, I am a member of many synth groups on Yahoo, and as most of you are aware that Yahoo have made a decision to stop hosting user content starting
Re: [oberheim] Matrix 12 factory patches
2019-10-26 by José Ángel Morente
There are some tools for Yahoo archiving, although just a few of them work properly. I ve download a full archive of this (and others) group and uploaded to a
Re: [oberheim] Matrix 12 factory patches
2019-10-26 by D T
groups.io seems to be the only real solution. That’s what many groups are moving to. best, DT ... groups.io seems to be the only real solution. That’s what
RE: [oberheim] Matrix 12 factory patches
2019-10-26 by Nicole Massey
A cursory search seems to indicate there are several archiving or migration tools for yahoo groups out there. I suspect a lot of that isn t going to be blind
Re: [oberheim] Matrix 12 factory patches
2019-10-26 by davros303
Is there a way to archive the whole group? Definitely cannot lose this precious knowledge Sent from my iPhone ... Is there a way to archive the whole group?
RE: [oberheim] Matrix 12 factory patches
2019-10-24 by Nicole Massey
Have you gone through the (soon to be eliminated) files section for this group? I don t know if they re there, but if they are they won t be after December 14.
Matrix 12 factory patches
2019-10-24 by oozy music
Hello Everyone, I am looking for the original matrix 12 patches (not xpander). Can anyone help me locate them? Thanks. -Michael
Re: Matrix 6R front panel grey round button needed
2019-04-25 by t_tangent2003@...
To conclude this thread, I was able to fix the 2 buttons which had the plastic pins snapped off by following the advice from Malte Rogacki. I drilled a small
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-17 by t_tangent2003@...
Thanks for that valuable info Bob, very useful to know. :)
Re: [oberheim] Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-17 by Bob Grieb
The tolerance on 78 and 79-series regulators is something like 5%. I usually buy the A part when replacing them, as the tolerance is 2%. So 7805A, with a few
Re: [oberheim] Matrix 6R front panel grey round button needed
2019-04-17 by t_tangent2003@...
Hi Malte, Thanks for the idea, that it definitely worth thinking about. I have to find a friend who is as good at mechanical engineering, or else invest in a
Re: [oberheim] Matrix 6R front panel grey round button needed
2019-04-17 by Malte Rogacki
This happened to me as well while fixing a Matrix 6 a couple of years ago. A friend of mine who is a splendid mechanic drilled a small hole into the end of the
Re: Matrix 6R front panel grey round button needed
2019-04-17 by t_tangent2003@...
Following on from my earlier post, I found out that a second grey round button that fits on the front panel tact switches had weakened so much the small
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-17 by t_tangent2003@...
Hi Christian, Yes, I find it useful when people post their results as well and wish others did it more often, so hopefully my update will be of use to someone.
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-17 by Christian Lortie
Hi, Thank you for the update after the changes.Many people never follow-up, so that s very much appreciated. Thanks for the measurements too! Very useful as
Matrix 6R front panel grey round button needed
2019-04-17 by t_tangent2003@...
I am just in the process of replacing some tact switches on the front panel PCB which have stopped working properly, but unfortunately I didnt realise that
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-16 by t_tangent2003@...
All done and working. Actually it was working before, but seeing as I had to open the Matrix 6R to replace the old battery that had died, I figured it was
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-16 by t_tangent2003@...
Thanks very much for the confirmation on those voltage regulators. For the caps, yes I have read good things about the Nichicon PW series so will replace with
Re: Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-16 by baritonomarchetto@...
They are. Remember that capacitors must have the exact same capacity but equal or higher voltage.
Matrix 6R Power Supply Voltage Regulator Replacement
2019-04-13 by t_tangent2003@...
Hi all, I am recapping my Matrix 6R power supply, and also replacing the voltage regulators, so I just wanted to ask whether the following parts are compatible
Re: Matrix 6 voice stuck issue
2019-04-05 by barndoorproductionstheatre@...
The old Radio Shack Color Computer, which used the 6809E and, in the Color Computer 3, the 68B09E, has a clock crystal at 3.559383 MHz. For what that s
Re: Matrix 6 voice stuck issue
2019-04-02 by baritonomarchetto@...
Does anyone know the value of the clock crystal?
Re: [oberheim] Re: Matrix 6 voice stuck issue
2019-04-02 by baritonomarchetto@...
Yes, you are right, sorry for the wrong info i gave. In my little experience I have never seen a crystal go bad (nor a microprocessor of this era, to say the
Re: [oberheim] Re: Matrix 6 voice stuck issue
2019-04-01 by M.R.
The M6 schematic clearly shows a clocks crystal between pins 38 and 39, though. On the other hand the M6 schematic isn t 100% trustworthy in my opinion... On
Re: Matrix 6 voice stuck issue
2019-04-01 by skoteinos@...
The schematic I found is hard to read but I see an IC called U3 connected to MIDI DIN ports that must be the UART. It looks like pin9 of U3 is the enable line
Re: Matrix 6 voice stuck issue
2019-04-01 by baritonomarchetto@...
Thank you. Could you please give me some additional detail on what to check? Is it right to assume that if the reset pin is high (no reset) some data transfer
Re: Matrix 6 voice stuck issue
2019-04-01 by skoteinos@...
Looking at chip enable pins of the MIDI UART or switch multiplexers with a scope can give a hint whether the CPU is doing stuff or stuck.