polysix parts
2013-07-10 by robertzuggo
Hi All! I need some polysix parts, if you have for sale ,please send me a mail. Apreggiator button- yellow : 1pcs Pitch Bend and Modulation Wheels house :1pcs thanks! Rob
Thread
polysix parts
P6 scaling issue
2013-08-13 by Frank Carvalho
Hello I am sure this is a classic issue, but it just happened to me now, and I need some advice. My P6 has not been used for a while, and since electronic equipment should be turned on once in a while, I pulled it out to give it some time turned on. But in the meantime it has developed an issue with the scaling of the octaves. Every octave has become about a semitone too wide. All the oscillators line up fine across the entire range, but the range is just scaled wrong. I read suggestions that it may be an issue with an opto-coupler, and if that is the case, where is it located, and what modern day component may replace it? If it is something else, please give me your suggestions. And before you ask, the battery was replaced long ago, before it got bad. Thanks Frank Carvalho
RE: [PolySix] P6 scaling issue
2013-08-13 by backshall1
Yes, that does sound like an opto-coupler issue. It's the P1501 chip on the oscillator board. It looks like a 6-pin DIP chip, but it only has 5 pins and one of those isn't connected to anything, so it really has 4 pins that are used. Current replacements are Silonex NSL32SR3 and the Vactrol Vactec VTL5C3, and a couple of others in the Silonex and Vactrol families. You'll have to search the message threads to see what other people have used, or check out the file "PC-1 opto replacement.txt" in the group files section. Too bad there are no DIP package replacements available. All of these parts are radial lead so you have to figure out which leads are the diode side and what the polarity is before installing. Also, R93 usually needs to be changed, and it might take some experimenting to figure out what value works best. Don Backshall _____
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From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of Frank Carvalho Sent: Tuesday, August 13, 2013 4:43 PM To: PolySix@yahoogroups.com Subject: [PolySix] P6 scaling issue Hello I am sure this is a classic issue, but it just happened to me now, and I need some advice. My P6 has not been used for a while, and since electronic equipment should be turned on once in a while, I pulled it out to give it some time turned on. But in the meantime it has developed an issue with the scaling of the octaves. Every octave has become about a semitone too wide. All the oscillators line up fine across the entire range, but the range is just scaled wrong. I read suggestions that it may be an issue with an opto-coupler, and if that is the case, where is it located, and what modern day component may replace it? If it is something else, please give me your suggestions. And before you ask, the battery was replaced long ago, before it got bad. Thanks Frank Carvalho [Non-text portions of this message have been removed]
RE: [PolySix] P6 scaling issue
2013-08-17 by Frank Carvalho
Thank you. My technician only had a VTL5C1, which does not exactly match the characteristics as the VTL5C3 recommended. Can anyone suggest how a VTL5C1 would behave in the P6 in place of the failing PC-1, and what sort of resistor replacements may be needed. Someone suggested to use a trimpot in place of the R93, and adjust until it scales correctly. Thanks /Frank
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On Tue, 2013-08-13 at 17:00 -0400, backshall1 wrote: > > Yes, that does sound like an opto-coupler issue. It's the P1501 chip > on the > oscillator board. It looks like a 6-pin DIP chip, but it only has 5 > pins and > one of those isn't connected to anything, so it really has 4 pins that > are > used. Current replacements are Silonex NSL32SR3 and the Vactrol Vactec > VTL5C3, and a couple of others in the Silonex and Vactrol families. > You'll > have to search the message threads to see what other people have used, > or > check out the file "PC-1 opto replacement.txt" in the group files > section. > > Too bad there are no DIP package replacements available. All of these > parts > are radial lead so you have to figure out which leads are the diode > side and > what the polarity is before installing. Also, R93 usually needs to be > changed, and it might take some experimenting to figure out what value > works > best. > > Don Backshall > > _____ > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > Behalf Of > Frank Carvalho > Sent: Tuesday, August 13, 2013 4:43 PM > To: PolySix@yahoogroups.com > Subject: [PolySix] P6 scaling issue > > Hello > > I am sure this is a classic issue, but it just happened to me now, and > I > need some advice. > > My P6 has not been used for a while, and since electronic equipment > should be turned on once in a while, I pulled it out to give it some > time turned on. But in the meantime it has developed an issue with the > scaling of the octaves. Every octave has become about a semitone too > wide. All the oscillators line up fine across the entire range, but > the > range is just scaled wrong. > > I read suggestions that it may be an issue with an opto-coupler, and > if > that is the case, where is it located, and what modern day component > may > replace it? > > If it is something else, please give me your suggestions. > > And before you ask, the battery was replaced long ago, before it got > bad. > > Thanks > > Frank Carvalho > > [Non-text portions of this message have been removed] > > > > >
RE: [PolySix] P6 scaling issue
2013-08-17 by Frank Carvalho
And another thing: The copy of the schematics in the files section is very difficult to read to the point where I can not figure the component numbers, and I don't want to put this component in backwards. Can anyone tell me which pins of the PC-1 is LED plus and minus, and which are the resistor pins? One pin of the LED must be connected to R93, but is that the plus or the minus? /Frank
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> My technician only had a VTL5C1, which does not exactly match the > characteristics as the VTL5C3 recommended. Can anyone suggest how a > VTL5C1 would behave in the P6 in place of the failing PC-1, and what > sort of resistor replacements may be needed. Someone suggested to use > a > trimpot in place of the R93, and adjust until it scales correctly. > > Thanks > > /Frank > > On Tue, 2013-08-13 at 17:00 -0400, backshall1 wrote: > > > > Yes, that does sound like an opto-coupler issue. It's the P1501 chip > > on the > > oscillator board. It looks like a 6-pin DIP chip, but it only has 5 > > pins and > > one of those isn't connected to anything, so it really has 4 pins > that > > are > > used. Current replacements are Silonex NSL32SR3 and the Vactrol > Vactec > > VTL5C3, and a couple of others in the Silonex and Vactrol families. > > You'll > > have to search the message threads to see what other people have > used, > > or > > check out the file "PC-1 opto replacement.txt" in the group files > > section. > > > > Too bad there are no DIP package replacements available. All of > these > > parts > > are radial lead so you have to figure out which leads are the diode > > side and > > what the polarity is before installing. Also, R93 usually needs to > be > > changed, and it might take some experimenting to figure out what > value > > works > > best. > > > > Don Backshall > > > > _____ > > > > From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On > > Behalf Of > > Frank Carvalho > > Sent: Tuesday, August 13, 2013 4:43 PM > > To: PolySix@yahoogroups.com > > Subject: [PolySix] P6 scaling issue > > > > Hello > > > > I am sure this is a classic issue, but it just happened to me now, > and > > I > > need some advice. > > > > My P6 has not been used for a while, and since electronic equipment > > should be turned on once in a while, I pulled it out to give it some > > time turned on. But in the meantime it has developed an issue with > the > > scaling of the octaves. Every octave has become about a semitone too > > wide. All the oscillators line up fine across the entire range, but > > the > > range is just scaled wrong. > > > > I read suggestions that it may be an issue with an opto-coupler, and > > if > > that is the case, where is it located, and what modern day component > > may > > replace it? > > > > If it is something else, please give me your suggestions. > > > > And before you ask, the battery was replaced long ago, before it got > > bad. > > > > Thanks > > > > Frank Carvalho > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > >
Re: [PolySix] P6 scaling issue
2013-08-17 by Ben Stuyts
There is a good scan of the service manual available for download at http://www.synfo.nl Ben
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On 17 aug. 2013, at 13:36, Frank Carvalho <dko4342@vip.cybercity.dk> wrote: > And another thing: > The copy of the schematics in the files section is very difficult to > read to the point where I can not figure the component numbers, and I > don't want to put this component in backwards. Can anyone tell me which > pins of the PC-1 is LED plus and minus, and which are the resistor pins? > One pin of the LED must be connected to R93, but is that the plus or the > minus? > > /Frank >> My technician only had a VTL5C1, which does not exactly match the >> characteristics as the VTL5C3 recommended. Can anyone suggest how a >> VTL5C1 would behave in the P6 in place of the failing PC-1, and what >> sort of resistor replacements may be needed. Someone suggested to use >> a >> trimpot in place of the R93, and adjust until it scales correctly. >> >> Thanks >> >> /Frank >> >> On Tue, 2013-08-13 at 17:00 -0400, backshall1 wrote: >>> >>> Yes, that does sound like an opto-coupler issue. It's the P1501 chip >>> on the >>> oscillator board. It looks like a 6-pin DIP chip, but it only has 5 >>> pins and >>> one of those isn't connected to anything, so it really has 4 pins >> that >>> are >>> used. Current replacements are Silonex NSL32SR3 and the Vactrol >> Vactec >>> VTL5C3, and a couple of others in the Silonex and Vactrol families. >>> You'll >>> have to search the message threads to see what other people have >> used, >>> or >>> check out the file "PC-1 opto replacement.txt" in the group files >>> section. >>> >>> Too bad there are no DIP package replacements available. All of >> these >>> parts >>> are radial lead so you have to figure out which leads are the diode >>> side and >>> what the polarity is before installing. Also, R93 usually needs to >> be >>> changed, and it might take some experimenting to figure out what >> value >>> works >>> best. >>> >>> Don Backshall >>> >>> _____ >>> >>> From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On >>> Behalf Of >>> Frank Carvalho >>> Sent: Tuesday, August 13, 2013 4:43 PM >>> To: PolySix@yahoogroups.com >>> Subject: [PolySix] P6 scaling issue >>> >>> Hello >>> >>> I am sure this is a classic issue, but it just happened to me now, >> and >>> I >>> need some advice. >>> >>> My P6 has not been used for a while, and since electronic equipment >>> should be turned on once in a while, I pulled it out to give it some >>> time turned on. But in the meantime it has developed an issue with >> the >>> scaling of the octaves. Every octave has become about a semitone too >>> wide. All the oscillators line up fine across the entire range, but >>> the >>> range is just scaled wrong. >>> >>> I read suggestions that it may be an issue with an opto-coupler, and >>> if >>> that is the case, where is it located, and what modern day component >>> may >>> replace it? >>> >>> If it is something else, please give me your suggestions. >>> >>> And before you ask, the battery was replaced long ago, before it got >>> bad. >>> >>> Thanks >>> >>> Frank Carvalho >>> >>> [Non-text portions of this message have been removed] >>> >>> >>> >>> >>> >> >> >> >> >> > > > > > ------------------------------------ > > Yahoo! Groups Links > > >
Re: [PolySix] P6 scaling issue
2013-08-18 by Frank Carvalho
Thanks That certainly is a better scan. I am still uncertain about the adjustment of resistors though. Should that R85 resistor be different, given the slightly different characteristics of the VTL5C1? Or should I just put it in and see if it works? /FRank
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On Sat, 2013-08-17 at 16:52 +0200, Ben Stuyts wrote: > > There is a good scan of the service manual available for download at > http://www.synfo.nl
Re: [PolySix] P6 scaling issue
2013-08-18 by Frank Carvalho
No suggestions so far about resistor values. Well, I thought that the worst thing that could happen would be, that the P6 still scaled strangely. So I replaced the PC-1 with my VTL5C1, and replaced R93 with a 1k2. After all, the LED side would probably work the same. And guess what. It works perfectly. So the scaling issue is now solved with a new VTL5C1 opto-coupler. And while I was at is, I thought that I might as well try the brightness mod, and remove the effects VCF-chip, and it sounds great. /Frank
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On Sun, 2013-08-18 at 17:05 +0200, Frank Carvalho wrote: > > Thanks > > That certainly is a better scan. > I am still uncertain about the adjustment of resistors though. Should > that R85 resistor be different, given the slightly different > characteristics of the VTL5C1? > > Or should I just put it in and see if it works?