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I have one of the DAC chips if you need one. Doug synthparts.com

Hi Terje, It is a long shot, but try reflowing the solder on the socket of the DAC. Ya might get lucky.? Best Karl ________________________________ To: xpantastic@... Sent: Thu, July 12,

Hi all, Thank you very much for all the feedback and the hints of what to do. After a day?s break from the Matrix-12, I once again got into it with renewed energy. I *might* have found the error, but

Mr. Tobbe from KC ? P. Am 12.07.2012 00:18, schrieb Tobbe Bergman:

Freeze spray common in europe too. P. Am 12.07.2012 08:53, schrieb Karl Schmeer:

Confirmed ! I still have the 1st battery in my Xpander,- since I buyed it new. No leakage though,- and when I thought theres a replacement necessary, Ive found out the old is full up to now. Im sure

Hi Jeremy, The RAM data ( patch/multi data?)?in the M12/Xpander is battery backed. As opposed to FLASH ROM which is common in more modern designs. The only problem with battery backed RAM is you

Hi Terje, ? These are analog switches which multiplex?the master DAC voltages to provide individual?sample and hold circuits for each parameter in a given voice. The resistor and capacitor

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 the old (that is soldered on the board)

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? Thanks for any explanations! Cheers,

Yes, this is a battery Kris

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 chip). You can try to reseat or replace one

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 wondering with all of the things that you've

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 hopefully discover something the day after

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 voiceboards themselves. that's all im

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 one is almost in tune, but not quite. Some

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 iPhone

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

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

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 you just have a bad cable! :) -omar ---