Fw: [xpantastic] only one board active
2012-07-12 by Karl Schmeer
Hi Terje, ... These are analog switches which multiplex the master DAC voltages to provide individual sample and hold circuits for each parameter in a
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Re: [xpantastic] Xpander's memory of settings
2012-07-11 by Tobbe Bergman
There is a lithium battery that should be replaced every 10 year or so ! Some say it can start to leak and damage vital components if it get too old ! I ve had
Xpander's memory of settings
2012-07-11 by Jeremy Smith
Hi, Does anyone know how the Xpander stores its settings? If you turn it on and off, it keeps the settings, for years and years. Is there a long-life battery?
Re: [xpantastic] Xpander's memory of settings
2012-07-11 by Christophe Janot
Yes, this is a battery Kris ... Yes, this is a battery Kris Le 11 juil. 2012 à 21:38, Jeremy Smith a écrit : Hi, Does anyone know how the Xpander stores its
Re: [xpantastic] only one board active
2012-07-11 by Do It Yourself Synth
I read again this thread, and I noticed that some functions passed the test. More interesting, the functions who are failling are all using the TL084 (x08
Re: [xpantastic] only one board active
2012-07-11 by -
Terje, Do you still have the 2nd Matrix 12? Maybe you can try board swapping between them to help narrow the possibilities (for both synths). I m also
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
Hi Omar, Good point! I have been working on it for two full days now, so I am probably a bit bewildered. I will let it rest for a day, get back to it and
Re: [xpantastic] only one board active
2012-07-10 by Omar
your goal is to rule out whether you have a bad board so that you re not wasting time thinking about or attempting to troubleshoot other areas outside of the
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
... Yes, this is what I am trying to do. There is sound from both voice cards. All 12 voices sound well, and after tuning one card is perfect, while the other
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
at this point its a process of elimination, working backwards from a known operational point and ruling out all factors along the way. -omar ... sent from
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
but it could be bad enough to cause the tuning errors. Just because its generating sound I would not rule it out. -omar ... sent from iPhone ... but it could
Re: [xpantastic] only one board active
2012-07-10 by Christophe JANOT
Yes you can try to only swap the, but he said previously that the board is producing sounds. So, the cable may be ok. Envoyé de mon iPhone ... Yes you can try
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
Ok. so if this ID is set with the strap/cable, have tried just moving the cable? If moving the cable changes the path then again its not your boards and
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
It has to be two boards, or the error message stops the machine. Terje ... Terje Winther terje.winther@wintherstormer.no http://www.wintherstormer.no/ It has
Re: [xpantastic] only one board active
2012-07-10 by Christophe JANOT
Try with only the other board. Envoyé de mon iPhone ... Try with only the other board. Envoyé de mon iPhone Le 10 juil. 2012 à 14:41, Terje Winther
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
The Matrix-12 is smarter than us: I tried to start with only one voice card connected, but was given an error message, and no sound comes out. Terje ... Terje
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
so then to me it sounds like you might just have a bad strap?? :) try swapping the straps as well... -omar ... sent from iPhone ... so then to me it sounds
Re: [xpantastic] only one board active
2012-07-10 by Do It Yourself Synth
Good idea ! ... Good idea ! Le 10 juil. 2012 à 13:53, Omar Torres a écrit : im not convinced yet you have a bad voiceboard can the Matrix-12 boot and run
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
im not convinced yet you have a bad voiceboard can the Matrix-12 boot and run with only one voice-card connected? If so, try each board individually and see
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
Yes, that was my original idea as well. However, both voice cards get the same messages, so I do not know how to seperate the commands. Maybe the voice card
Re: [xpantastic] only one board active
2012-07-10 by Omar Torres
no one is saying that moving the boards displaced the problem.You are misreading his results. Moving the boards resulted slot that handles voices 7-12,
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
... Dang! That means that there is something wrong with the voice card. OK, thanks, closer to the problem now. ... Terje Winther
Re: [xpantastic] only one board active
2012-07-10 by Do It Yourself Synth
Can you send me picture of the top right part of each of the voice board ? I want to see if they do not share the same ID. Here is the reason : Each voice
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
... No, no: The ribbon cable stayed in the same position, while I swapped the boards. And yes, a board swap should not displace the problem. So I must probably
Re: [xpantastic] only one board active
2012-07-10 by Do It Yourself Synth
The problem is that a board swap should not displace the problem... except if you do the mistake to swap the ribbon at the same time. Kris ... The problem is
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
Aha, thank you, very useful information. That gave me some ideas of what to check. Terje ... Terje Winther terje.winther@wintherstormer.no
Re: [xpantastic] only one board active
2012-07-10 by Do It Yourself Synth
The processor board only ask to the voice board to run the procedure. The timing tests are done by the voice board CPU and the 8253 Intel chip. So I had no
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
... Yes. I had to swap the boards in order to do that, because space is limited. ... Yes, correct. The flat cable. ... Yes it is, but doesn´t the tuning
Re: [xpantastic] only one board active
2012-07-10 by Terje Winther
Hi Karl, Thank you very much for the photos - very useful. Terje ... Terje Winther terje.winther@wintherstormer.no http://www.wintherstormer.no/ Hi Karl, Thank
Re: [xpantastic] only one board active
2012-07-09 by Christophe JANOT
So you swapped the connectors between the 2 voices boards. We are agree that it was the connectors at the upper right corner, right ? I ask because I don t
Re: [xpantastic] only one board active
2012-07-09 by Karl Schmeer
Hi Terje, Great trouble shooting! Yes, do reseat the chips and connectors on the Main processor board. This has been a mojor problem with these synths, but
Re: [xpantastic] only one board active
2012-07-09 by Terje Winther
Very interesting update: The Matrix-12 is just two Xpander voice board on top of each other, right? So it should be OK to shift which one of the cards who is
Re: [xpantastic] only one board active
2012-07-09 by Do It Yourself Synth
Try to reseat the U921 chip. This timer (8253) is used to test the frequency of VCO and VCF self oscillation. It may be dead too. The best is to test with an
Re: [xpantastic] only one board active
2012-07-09 by Do It Yourself Synth
Great news ! My own opinion is to not touch something which is ok. It may be safer to only touch the components potentially responsible of your problem. Kris
Re: [xpantastic] only one board active
2012-07-09 by Terje Winther
Thanks! I swapped the chips around a bit, and now all keys work. It could well be the wiggling caused by me taking the chips in and out several times that
Re: [xpantastic] only one board active
2012-07-09 by Do It Yourself Synth
About your keys problem, you may try to swap U63 and U75 on the processor board. The problem may be on the input line of one 4512 chip which may be destroyed.
Re: [xpantastic] Re: only one board active
2012-07-09 by Terje Winther
... VCOs are 8430, and VCF/VCAs are 8534. Terje ... Terje Winther terje.winther@wintherstormer.no http://www.wintherstormer.no/ Hi, what rev 3374s and 3372s
Re: [xpantastic] only one board active
2012-07-09 by Terje Winther
Hi, Thanks for the feedback. Good idea to compare with the Xpander service manual, as it is all there. I have been though all the procedures now. ... Yes,
Re: only one board active
2012-07-07 by synthparts
Hi, what rev 3374s and 3372s are in the failing board? Doug synthparts.com
Re: [xpantastic] only one board active
2012-07-06 by Karl Schmeer
Hi Terje, Wow Two M12 s :-) The version of the M12 service manual I have Bought from Factory long ago is pretty thin on details. It s just schematics and a
only one board active
2012-07-06 by Terje Winther
Hi all, Thanks a lot for all the help I have been given on this list. I have changed parts in the power supply, some CEM chips, all those el.caps who blocked
Re: [xpantastic] Xpander display on startup
2012-06-15 by Christophe JANOT
Thank you. So it us difficult to make some prediction for a brand new unit ;-) Envoyé de mon iPhone ... Thank you. So it us difficult to make some prediction
Matrix 12 MIDI input not working?
2012-06-15 by kc8jnh
I feel so dumb asking this question, but...I can t get my Matrix 12 to respond to MIDI input. I bought this synth recently and it s by no means the first. The
Re: [xpantastic] Xpander display on startup
2012-06-14 by Howie Shen
Upon power up all 3 screens should light up after a couple seconds displaying whatever the last state was before powering down. In other words, wherever you
Xpander display on startup
2012-06-14 by Do It Yourself Synth
Hello, A need a few answers : - What are the first informations displayed by the xpander on startup ? - On which display(s) ? - Immediately ? - after a few
Re: [xpantastic] Re: Matrix 12 Facelift
2012-06-08 by endofcommon@gmail.com
can you share the process please ?
Re: [xpantastic] Re: The big rubber feet
2012-05-28 by Howie Shen
Hi Doug, My Matrix-12 is actually missing just one of those rubber feet. Can I buy one from you? Hope all is well, Howie ________________________________ From:
Re: [xpantastic] The big rubber feet
2012-05-27 by Terje Winther
Hi Karl, Thanks a lot - just what I needed! Unfortunately the company based in Florida (?) didn´t sell to Europe, but through their site I was able to find
Re: The big rubber feet
2012-05-27 by synthparts
I have a few of the original rubber feet. Doug synthparts.com
Re: [xpantastic] The big rubber feet
2012-05-26 by Karl Schmeer
Hi Terje, A couple of my M12 s feet fell off and I did not worry about it cause I had it on a stand. But I placed it on a table for awhile and it did not take