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Hi David, Of course I'm aware of the two sites you mention. I have browsed them both more than once. Without them, my project would certainly not be well under way as it is today. I want to share my

Forgot to mention - I really like the job you did on the diagram! David

Hi Joachim, It’s always great having folks collect and provide documentation for synths. However, I don’t know if you’ve seen some of the existing sites that already have done this. Crow’s

I just created a dedicated site where I'll share several resources concerning the CS-80 (among other things). So I moved the Overall Circuit Diagram there: http://joachim.milson.free.fr

Hi ! I am looking for a power supply for the cs-80 . if someone got that in stock ! ( maybe !!, ) .

thats exactly what I did... it said the cs80_diagram.zip was corrupt.... what is your default unzipping program on your version of windows 7? perhaps I DLoaded too soon.... seems yahoo informed by

Hello, It worked for me fine on Windows 7 download all five files CS80_Diagram.z01 CS80_Diagram.z02 CS80_Diagram.z03 CS80_Diagram.z04 CS80_Diagram.zip put them in one directory doubleclick on

Downloading and unzipping the files works fine for me. Here are the exact file sizes for you to check: size of files with extensions . z01 to .z04 is 3MB exactly (that is 3 145 728 bytes) size of

Same here, I'm on Mac... but maybe the reason is I had few days ago HD crash and still didn't re-install all my apps... Thanks in advance. Daniel Forro

Hi ... thankyou for your effort I downloaded the 5 files but my extracting programs says the file is corrupt and none of them will open.... could you re check Thanks again for your work.......

In the last five years, I’ve been working on the CS-80 Overall Circuit Diagram. I cleaned the original scan, but also added colors to help localize the boards. A lot of typos and oversights had to

---- On Fri, 12 Dec 2014 03:31:21 -0600 pyjamagroove@... [yamahacs80] <yamahacs80@...> wrote ---- Sure, that in a analog synth that is desirable, but for phasing effect

there were different runs of oscillator chips.... I did the upgrade for all 16 chips, sadly, one chip was a dud and I had to revert both chips in the "8th" cards to the original... the new chips had

Sure, that in a analog synth that is desirable, but for phasing effect between the channels we have detune function in the CS80, that is quite touchy so to use it effectively the tune between the

Maybe it is possible, but is it good to tune it so precisely? I think a certain out-of-tune behavior is normal, and even desirable, in the case of polyphonic analog synth, also random changes in

I have been tuning my CS80 again after several minor repairs and adjustments. I was wondering where to stop knowing, that it's good enough. My CS80 behaves different cold to warm and that is

don't forget you could possibly have a failing supply under load ONLY, so it will fool you at first. Try loading the supply itself (no baords connected) with the same load measurements as you are

Hi Martin & all! Couple of notes from your forum manager here. First, I’ll try and take some measurements in a couple of weeks for this. Second, I’ve been in massive crazy mode for the last

Thank you very much, That is what I am getting as well... Now I need to find the component that is making the PSU trip! All 15V related boards are disconnected and have been tested individually and

Hi, yeah the 15's are generally approx 70 Ohms to gnd.