Ells, Sorry I overlooked that link. Great info there-thanks! Yeah, the ARP is pretty cool but I paid waaay too much for it (restored). It has no CV or gate...
hello, I just midified (verry simple: only midi in / note on/off) my polysix. now, I'd like to tune each voice and adjust the filter parameters. - when I do an...
... Thank you, dizz! ... Still verrry nice! I think of how much money I've spent on the Polysix... I originally bought it used back in 1984 for $600. Stupidly...
Hi, When I do the adjustment, especially the VCO tuning, dont do it strictly according to the serfvice manual. I do one voice starting from a center position...
hello Johannes, thanks for replying.. I didn't mark my problems, so you just did a general comment.. I'm used to tuning a ms20 via a mcv1, so I know the basic...
Hi, SW1 switches to "stretched tuning". This means that the overall tuning is intentionally slightly out of tune. It is stretched a few cent over the whole 5...
I have installed a midikit from j hausensteiner, every thing seem to work except i don't get any sound when i play the keyboard. I see data at the keyboard...
To change the battery to Lithium, you have to substitute the current limiting charging resistor (100ohms?) with a blocking diode. The cathode should connect to...
Hello- I've been handed another battery-damaged Polysix to repair; what's different about this one is that it contains a MIDI board that appears to be from...
Greetings again! It's been a year or longer, but I finally got around to purchasing another Polysix. I'm interested in some mods for the thing, especially... ...
I've been recovering this one, found in the flea market. Overall it had about 8-9 different faults that I fixed, leaving two problems. The first is a bad...
Hi, I only have the schematics for the MK I; which I do not know whether it is similar to the MK II. Which VCO has the problem? Is it VCO-1 or VCO-2 or both?...
Hello, Again here is a polysix with the "no sound at all" problem. When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 there is a constant pattern but...
Thanks very much ! The tuning is bad on both VCO1 and VCO2 of that oscillator (although it seems more extreme on VCO2). I uploaded the schematics diagram for...
Thanks for reply, I fixed the battery problem as described. I checked (again) all connections/signals with an oscilloscoop. I don't see any output, also no...
Hi, The caps are Cx10 ... where x is the voice number. On the schematics only voice #7 is drawn in detail, so you can see C710. Maybe it is not the cap but the...
Thanks ! The Cx10 and Rx39 have been already replaced to no avail. By IC8 are you refering to ICx08 ? it's a 4558 opamp. btw, I now see that I had to replace...
This might sound trivial but is your power supply output all in check. In addition have you checked the the solder pads on the power connectors. I had and...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
