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2004-07-07 by oxygeno1313
Hi, I have a Roland SH-101, but the SQUARE wave output sounds very tiny compared with the SAW and SUB OSC output, i had the same problem with a SCI Pro-One long time ago, but that was only that was un- calibrated. I tought could be the same problem, but everything it's ok, the scale and tune are fine. I checkd the pin ouputs of the CEM3340 and seems to be fine, also i tested with other 3340's but nothing, anyone have a clue ? Thanks, Akira
2004-07-07 by Rory Mc Donald
Maybe a bad capacitor? synths that old often have leaky caps. I am not a repair guy but something to check... Rory McDonald Oldsynths Moderator
On Jul 6, 2004, at 11:33 PM, oxygeno1313 wrote: > Hi, > > I have a Roland SH-101, but the SQUARE wave output sounds very tiny > compared with the SAW and SUB OSC output, i had the same problem with > a SCI Pro-One long time ago, but that was only that was un- > calibrated. I tought could be the same problem, but everything it's > ok, the scale and tune are fine. I checkd the pin ouputs of the > CEM3340 and seems to be fine, also i tested with other 3340's but > nothing, anyone have a clue ? > > Thanks, > > Akira > > > > > > > Yahoo! Groups Sponsor > > ADVERTISEMENT > <122603_LREC_bkup_BR_Ashanti.jpg> > <l.gif> > > Yahoo! Groups Links > > • To visit your group on the web, go to: > http://groups.yahoo.com/group/oldsynths/ > > • To unsubscribe from this group, send an email to: > oldsynths-unsubscribe@yahoogroups.com > > • Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service. > >
2004-07-07 by Mike Schultz
Howabout the trimpot in there for PWM calibration or pulse width (VR2?). I have an Odyssey whose 50% duty cycle was more like 10% because of this. Just an idea. Otherwise someone would probably have to chase it down with a scope. Mike Schultz xogenus prototype development 70 george st. 3rd floor ottawa.ontario 613.241.5862 Rory Mc Donald wrote:
> Maybe a bad capacitor? synths that old often have leaky caps. > I am not a repair guy but something to check... > Rory McDonald > Oldsynths Moderator > > > On Jul 6, 2004, at 11:33 PM, oxygeno1313 wrote: > > Hi, > > I have a Roland SH-101, but the SQUARE wave output sounds very tiny > compared with the SAW and SUB OSC output, i had the same problem with > a SCI Pro-One long time ago, but that was only that was un- > calibrated. I tought could be the same problem, but everything it's > ok, the scale and tune are fine. I checkd the pin ouputs of the > CEM3340 and seems to be fine, also i tested with other 3340's but > nothing, anyone have a clue ? > > Thanks, > > Akira > > > > > > > > > *Yahoo! Groups Sponsor* > > ADVERTISEMENT > > > <122603_LREC_bkup_BR_Ashanti.jpg> > <l.gif> > > *Yahoo! Groups Links* > > \ufffd To visit your group on the web, go to: > http://groups.yahoo.com/group/oldsynths/ > > \ufffd To unsubscribe from this group, send an email to: > oldsynths-unsubscribe@yahoogroups.com > > \ufffd Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > >