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Thread
2012-02-17 by MFAitkenJr
Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by Martin Ator
Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin ________________________________
From: MFAitkenJr <mfaitkenjr@...> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by F Aitken
Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. -Frank ________________________________
From: Martin Ator <cyllall@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 4:37 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin ________________________________ From: MFAitkenJr <mfaitkenjr@...> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by Michael Hawkins
If you find out there is a bigger problem than just mechanical then check out: http://f1.grp.yahoofs.com/v1/YF0-T4ya4J7RCiIO9wKq8nLp2oci_sbWuFgV3xARSvc3GifS6Q9cnnJvbw7utKnd4VSWH_PyIaJdLLacLWjo/1%29%20Poly-800/Servicing/Joystick%20PCB%20Electronics%20-%20Theory%20of%20Operation.pdf It will help you figure out what is wrong but you will need a multimeter. Mike ________________________________
From: F Aitken <mfaitkenjr@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 8:11 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. -Frank From: Martin Ator <cyllall@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 4:37 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin From: MFAitkenJr <mfaitkenjr@...> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by Martin Ator
Hmm. Probably not the joystick unless there's cracked solder on one of the joints or a connector or wire. I'll have a look at schematics. It might be a faulty pitch bend slider. Martin ________________________________
From: F Aitken <mfaitkenjr@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, 17 February 2012, 13:11 Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. -Frank From: Martin Ator <cyllall@yahoo.com> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 4:37 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin From: MFAitkenJr <mfaitkenjr@...> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by Martin Ator
If you use a MIDI monitor like MIDIOX from the poly 800 you should be able to transmit pitch bend data and see it being received,you can try to send pitch bend to the poly 800 as well. You can check for cracks in the solder and broken wires inside behind the joystick mechanism. If it is transmitting MIDI then you need to try the calibration routine in the service manual. You only need a multimeter and someone to wiggle your stick. Page 21 section 2 D/A converter check and adjustment would be a good place to start. ________________________________
From: F Aitken <mfaitkenjr@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, 17 February 2012, 13:11 Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. -Frank From: Martin Ator <cyllall@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 4:37 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin From: MFAitkenJr <mfaitkenjr@yahoo.com> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by F Aitken
To everyone replying, I appreciate your help. I will do further testing and examination this weekend. Any other ideas are welcome. If the service manual in not in the "File" section, can someone email it to me or direct my to a link. Thanks again! -Frank ________________________________
From: Martin Ator <cyllall@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 10:16 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend If you use a MIDI monitor like MIDIOX from the poly 800 you should be able to transmit pitch bend data and see it being received,you can try to send pitch bend to the poly 800 as well. You can check for cracks in the solder and broken wires inside behind the joystick mechanism. If it is transmitting MIDI then you need to try the calibration routine in the service manual. You only need a multimeter and someone to wiggle your stick. Page 21 section 2 D/A converter check and adjustment would be a good place to start. ________________________________ From: F Aitken <mfaitkenjr@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@...m> Sent: Friday, 17 February 2012, 13:11 Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. -Frank ________________________________ From: Martin Ator <cyllall@...> To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> Sent: Friday, February 17, 2012 4:37 AM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. Martin ________________________________ From: MFAitkenJr <mfaitkenjr@...> To: korgpolyex@yahoogroups.com Sent: Friday, 17 February 2012, 3:19 Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? Thanks, Frank
2012-02-17 by no freq
To everyone replying, I appreciate your help. I will do further testing and examination this weekend. Any other ideas are welcome. If the service manual in not in the "File" section, can someone email it to me or direct my to a link. Thanks again! -Frank
Sent: Friday, February 17, 2012 10:16 AM
Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend
If you use a MIDI monitor like MIDIOX from the poly 800 you should be able to transmit pitch bend data and see it being received,you can try to send pitch bend to the poly 800 as well.You can check for cracks in the solder and broken wires inside behind the joystick mechanism.If it is transmitting MIDI then you need to try the calibration routine in the service manual. You only need a multimeter and someone to wiggle your stick.Page 21 section 2 D/A converter check and adjustment would be a good place to start.From: F Aitken <mfaitkenjr@...>
To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com>
Sent: Friday, 17 February 2012, 13:11
Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend
Hi, Thanks for the reply. Yes, I';ve moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement.-FrankFrom: Martin Ator <cyllall@...>
To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com>
Sent: Friday, February 17, 2012 4:37 AM
Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend
Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself.MartinFrom: MFAitkenJr <mfaitkenjr@...>
To: korgpolyex@yahoogroups.com
Sent: Friday, 17 February 2012, 3:19
Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend
Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it?
Thanks,
Frank
2012-02-18 by F Aitken
Well, some good news. The Poly 800 responded to Pitch Bend when I tested it with another controller. This points to a connection problem maybe. There is a connector I can't see that is under one of the boards. Maybe that's loose. Any other thoughts? Next I will look under the hood, do some disassembly, and take a closer look at things. Thanks for the info! Any more thoughts are welcome. ________________________________ From: no freq <no.freq@...> To: korgpolyex@yahoogroups.com Sent: Friday, February 17, 2012 3:21 PM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I once noticed this kind of problem on one of the poly-800 I serviced. And from what I can recall, I had to change a varicap for which I've been able to source an equivalent at Farnell. Looking at the schematic, it seems like there's only one, labeled VC1, in "block 19". Hope it helps... Good luck! 2012/2/17 F Aitken <mfaitkenjr@...>
> >To everyone replying, I appreciate your help. I will do further testing and examination this weekend. Any other ideas are welcome. If the service manual in not in the "File" section, can someone email it to me or direct my to a link. Thanks again! -Frank > > > >From: Martin Ator <cyllall@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, February 17, 2012 10:16 AM > >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >If you use a MIDI monitor like MIDIOX from the poly 800 you should be able to transmit pitch bend data and see it being received,you can try to send pitch bend to the poly 800 as well. > >You can check for cracks in the solder and broken wires inside behind the joystick mechanism. > >If it is transmitting MIDI then you need to try the calibration routine in the service manual. You only need a multimeter and someone to wiggle your stick. >Page 21 section 2 D/A converter check and adjustment would be a good place to start. > > > >From: F Aitken <mfaitkenjr@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, 17 February 2012, 13:11 >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. >-Frank > > >From: Martin Ator <cyllall@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, February 17, 2012 4:37 AM >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. > > > >Martin > > > >From: MFAitkenJr <mfaitkenjr@...m> >To: korgpolyex@yahoogroups.com >Sent: Friday, 17 February 2012, 3:19 >Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? > >Thanks, >Frank > > > > > > > > > >
2012-02-20 by MFAitkenJr
After doing some tests, I think it may be a bad pitch bend slider as someone suggested, since the more I moved/worked it, the bending began to work. What is the pitch bend range of the poly 800 at the highest setting? Currently it goes from C up to G and C down to F. -Frank --- In korgpolyex@yahoogroups.com, no freq <no.freq@...> wrote:
> > Hi, > > I once noticed this kind of problem on one of the poly-800 I serviced. And > from what I can recall, I had to change a varicap for which I've been able > to source an equivalent at Farnell. > > Looking at the schematic, it seems like there's only one, labeled VC1, in > "block 19". > > Hope it helps... > > Good luck! > > 2012/2/17 F Aitken <mfaitkenjr@...> > > > ** > > > > > > To everyone replying, I appreciate your help. I will do further testing > > and examination this weekend. Any other ideas are welcome. If the service > > manual in not in the "File" section, can someone email it to me or direct > > my to a link. Thanks again! -Frank > > > > *From:* Martin Ator <cyllall@...> > > *To:* "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> > > *Sent:* Friday, February 17, 2012 10:16 AM > > > > *Subject:* Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch > > Bend > > > > > > If you use a MIDI monitor like MIDIOX from the poly 800 you should be > > able to transmit pitch bend data and see it being received,you can try to > > send pitch bend to the poly 800 as well. > > You can check for cracks in the solder and broken wires inside behind the > > joystick mechanism. > > If it is transmitting MIDI then you need to try the calibration routine in > > the service manual. You only need a multimeter and someone to wiggle your > > stick. > > Page 21 section 2 D/A converter check and adjustment would be a good place > > to start. > > > > *From:* F Aitken <mfaitkenjr@...> > > *To:* "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> > > *Sent:* Friday, 17 February 2012, 13:11 > > *Subject:* Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch > > Bend > > > > > > Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it > > doesn't work. I need to test the pitch bend controlling the Poly from > > another synth. I hope the issue is no more than a good joystick cleaning > > or replacement. > > -Frank > > > > *From:* Martin Ator <cyllall@...> > > *To:* "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> > > *Sent:* Friday, February 17, 2012 4:37 AM > > *Subject:* Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch > > Bend > > > > > > Silly question but, have you adjusted the 'BEND' slider next to the > > volume control to maximum (10) the pitch bend wont work without this. I > > always forget about this one myself. > > > > Martin > > > > *From:* MFAitkenJr <mfaitkenjr@...> > > *To:* korgpolyex@yahoogroups.com > > *Sent:* Friday, 17 February 2012, 3:19 > > *Subject:* [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > > > > Hi, I have a poly 800 and the joystick half works. The DCO and VCF of > > Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick > > just not good anymore? I opened it up and all the cables seem to be > > connected fine. If the joystick assembly is broken, does anyone know where > > I can buy it? > > > > Thanks, > > Frank > > > > > > > > > > > > > > > > > > > > > > >
2012-02-20 by F Aitken
Oops, nevermind about the pitch bend range question. Overlooked it in the manual. Looks like the Poly800 is working fine now. I probably will have to change out the PB range slider, but maybe it just needed to be used again. The synth was stored away for a couple years. ________________________________ From: no freq <no.freq@...> To: korgpolyex@yahoogroups.com Sent: Friday, February 17, 2012 3:21 PM Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend Hi, I once noticed this kind of problem on one of the poly-800 I serviced. And from what I can recall, I had to change a varicap for which I've been able to source an equivalent at Farnell. Looking at the schematic, it seems like there's only one, labeled VC1, in "block 19". Hope it helps... Good luck! 2012/2/17 F Aitken <mfaitkenjr@...>
>To everyone replying, I appreciate your help. I will do further testing and examination this weekend. Any other ideas are welcome. If the service manual in not in the "File" section, can someone email it to me or direct my to a link. Thanks again! -Frank > > > >From: Martin Ator <cyllall@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, February 17, 2012 10:16 AM > >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >If you use a MIDI monitor like MIDIOX from the poly 800 you should be able to transmit pitch bend data and see it being received,you can try to send pitch bend to the poly 800 as well. > >You can check for cracks in the solder and broken wires inside behind the joystick mechanism. > >If it is transmitting MIDI then you need to try the calibration routine in the service manual. You only need a multimeter and someone to wiggle your stick. >Page 21 section 2 D/A converter check and adjustment would be a good place to start. > > > >From: F Aitken <mfaitkenjr@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, 17 February 2012, 13:11 >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Hi, Thanks for the reply. Yes, I've moved the Bend slider to max and it doesn't work. I need to test the pitch bend controlling the Poly from another synth. I hope the issue is no more than a good joystick cleaning or replacement. >-Frank > > >From: Martin Ator <cyllall@...> >To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com> >Sent: Friday, February 17, 2012 4:37 AM >Subject: Re: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. > > > >Martin > > > >From: MFAitkenJr <mfaitkenjr@...> >To: korgpolyex@yahoogroups.com >Sent: Friday, 17 February 2012, 3:19 >Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > >Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? > >Thanks, >Frank > > > > > > > > > >
2012-04-11 by mr.biil
I hope top posting is ok I had the same problem - the pcb for the joystick was cracked. couldnt tell till I removed it and looked closely bill --- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@...> wrote:
> > Silly question but, have you adjusted the 'BEND' slider next to the volume control to maximum (10) the pitch bend wont work without this. I always forget about this one myself. > > > Martin > > > > ________________________________ > From: MFAitkenJr <mfaitkenjr@...> > To: korgpolyex@yahoogroups.com > Sent: Friday, 17 February 2012, 3:19 > Subject: [korgpolyex] DCO and VCF of Joystick work, but not Pitch Bend > > > Â > Hi, I have a poly 800 and the joystick half works. The DCO and VCF of Joystick work, but not Pitch Bend. Is this an easy fix? Or is the joystick just not good anymore? I opened it up and all the cables seem to be connected fine. If the joystick assembly is broken, does anyone know where I can buy it? > > Thanks, > Frank >