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It would not change anything adding a faster 6809 and upping the speed of the clocking circuit, you would have to change a lot more in the circuit to cope with the faster speeds.. it would also create

Hitachi makes pin & instruction compatible replacement for the 6809, but it's clock speed can go up to 3 or 4Mhz. The 6309 has some additional instructiuons that the 6809 does not have, but needs to

Hi everyone, my xpander seems to fail the VCO tune test randomly!some voices fail during one test and pass on the next! there is no cosistancy on the voices that fail,it can be any one of

Hi everyone, When I read the "percussive like patches"-thread, I was reminded that I while ago (when the Matrix 12 was my only analog synth) that I (as many others) was a bit frustrated with the

Nothing is ever posted on these sites, you have to call and tell them how many you want to buy. Even at $50-$100 a piece, it's better than letting a $1600 (or more) synth lay useless, if the part ever

Hello Randy, Sounds right to me. I was thinking of the times I have seen techs leave the synth plugged in and powered up to avoid dumping the memory. It takes guts but some guys do it. Best

Hi Tony, --- In xpantastic@... <mailto:xpantastic@...> , "Tony Cappellini" <cappy2112@...> What was the cost per part? I have a problem every once in a while (well, more and

If your xpander is not plugged into anything (e.g. the wall) while unsoldering the battery, I it shouldn't matter if the iron is grounded or not because there will be no circuit to complete!? Just

The Service manual reads that this should be 4.4 V with power on, and 2.xV with power off. With power off, the voltage reading is correct. I will probably change the battery too, since it's been

Thanks Phillipe, You are too kind. Truth is, You fixed it by doing all the heavy lifting(real work). I just made some suggestions. Glad I Could Help Karl wrote:

Hi Tony, Have been out of pocket for a few days ( building a parade float). Back now. wrote: 6.6 V seems very strange for the memory power supply. The battary might need changing. If you are

In 1998 or so, I bought my Xpander sight unseen from a guy in Southern California. I was living in San Jose at the time, about 6 hours away by car. (someone gave me a tip and I followed up on it). I

Karl, I went through all the DC voltmeter measurements in the service manuel. Everything looks good (to me) except for Step 3, +5M text. On the right side of D4 (as I am facing the Processor Board,

There?s nothing wrong with it,- use it as a synth ... Try to create a wovel sounding selfplaying patch which sings the song "Rolling Home" ... :-D

I will. I hope to take a look inside this weekend. During the week is difficult Karl- my car is making a noise that also sounds like my Xpander. Any idea what is wrong ;-)

Yep,- Karl is a big plus here ! PeWe philipperyckman schrieb:

All of you, Guys, trust Karl: he's a genius. He fixed my Xpander in no time across the atlantic !! Do exactly the steps he recommends. Best regards to all, Philippe

Hi Tony, I did find this link to some xpander pages in PDF: http://matrix-12.tripod.com/home.htm Karl

Hey Tony, I was looking in the Xpander Service Manual. I Have a PDF copy, but I don't remember were I got it. Anyway, It says that When you do the DAC mono test you should hear none or very seldom