Rhodes Chroma Polaris

Geez... must be a long Memorial weekend...

Am 28.05.2018 um 09:49 schrieb adirondack_pc@... [chromapolaris]:

> Are there any other Polaris groups on the Internet?

what for?

It has been very quiet here and I've asked some questions. since I haven't received any answers or queries, I figured I'd ask.

That may be an oxymoron - asking if there's help for help.

Tracy




--------------------------------------------

On Mon, 5/28/18, Florian Anwander fanwander@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: Re: [chromapolaris] Anyone Home?
To: chromapolaris@yahoogroups.com
Date: Monday, May 28, 2018, 4:58 AM


 









Am 28.05.2018 um 09:49 schrieb
adirondack_pc@... [chromapolaris]:

> Are there any other Polaris groups on the Internet?

what for?











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I will check it out, since I've been on Facebook for about 15 years. Never needed it for synths before, but surely do now.

Thanks...

Tracy
--------------------------------------------

On Mon, 5/28/18, synthmans@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: [chromapolaris] Re: Anyone Home?
To: chromapolaris@yahoogroups.com
Date: Monday, May 28, 2018, 8:42 AM


 









https://www.facebook.com/Chroma-Polaris-160844894027040/









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Yep!

> Gesendet: Montag, 28. Mai 2018 um 14:42 Uhr
> Von: "synthmans@... [chromapolaris]" <chromapolaris@yahoogroups.com>
> An: chromapolaris@yahoogroups.com
> Betreff: [chromapolaris] Re: Anyone Home?
>
> https://www.facebook.com/Chroma-Polaris-160844894027040/ https://www.facebook.com/Chroma-Polaris-160844894027040/

This is a Facebook page.  The admin of this Yahoo group should start a Chorma Polaris Facebook group.  There are possibly hundred of active synth groups on Facbook.  A page is like a blog, a group is like a forum.  Here is just a few synth groups on Facebook I am a member of.  The future of Yahoo groups is uncertain.

> ... It has been very quiet here and I've asked some questions. since
> I haven't received any answers or queries, I figured I'd ask...

Speaking only for myself, I suspect that there haven't been many replies for two main reasons:

1) It isn't really clear what the 'problem' is
2) It was already noted that "...No o-scope...am no repair tech"

First - without having a good description of what is really happening (under a controlled setup) there's no easy way for anyone to make a meaningful suggestion as we don't know exactly what you're doing (hence what you should be seeing).

Second - most of these sorts of issues are 'easy' to diagnose if you can follow the signal with a meter and/or scope - but if that's not going to be possible, then as much as folks might want to help, it becomes very difficult (and not very likely) that some sort of generalized 'do this and you'll be OK' comment can be made.

Some thoughts as to how it might make it easier for people to help.

First - start with a 'standard' configuration that other's can duplicate/evaluate.

For instance - let's start with a 'scratch' patch. Select patch A1 (for instance). Then select Upper Function, Erase Prog, and select "1". Now, when you press the "A" bank, you should see that A1 isn't lighted. Select A1 and you will year a 'basic' sound.

You can then document what specific settings you are making - for instance:

Osc 2 Sync button on
Cutoff Slider to 3/4

Now - if some concerns are being seen with the Resonance slider, you can describe what that means/how you see it.

For instance - if with this setup perhaps you don't seem to start to hear any change until the resonance slider has been moved about 1/2" and/or perhaps you don't happen to hear any further changes when the slider is in the last 1/2" of travel or so - then this is likely 'normal'.

It is important to keep in mind that the Polaris doesn't have direct analog control of the parameters. That means there are a finite number of selection that the sliders will give you. Some have more, some have less. For Resonance, there are expected to be a total of 8 levels. So - whether or not there is a 'dead zone' at the top and bottom of the sliders, the key is whether you can hear 8 different settings as you go through the range of the slider. If you do (and if it is increasing/decreasing in the moved direction) then likely all is well.

Please note that a 'clean slider' doesn't necessarily mean a 'good slider'. It is absolutely possible to have a worn-out or loose slider that feels good, and slides nice, but it may not actually be making the contact as it should. You can use a simple multi-meter to measure the voltage from the middle connection of the pot, to see if the voltage does cleanly slide from 0v -> 5V as the slider is moved from one end to the other. If the value jumps, or is erratic - then further attention is required to the actual slider.

Note - it would be expected that all of the items in the "Adjustments and Checkout" section of the Polaris Service Manual would be reviewed and checked.

Good luck with your efforts - and hopefully with a few more concrete observations the people on the list will be able to give some more concrete suggestions.

David Clarke

Wonderful!


--------------------------------------------

On Tue, 5/29/18, 'albrecht storz' albstorz@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: Aw: [chromapolaris] Re: Anyone Home?
To: chromapolaris@yahoogroups.com
Date: Tuesday, May 29, 2018, 5:49 AM


 









Yep!



> Gesendet: Montag, 28. Mai 2018 um 14:42 Uhr

> Von: "synthmans@... [chromapolaris]"
<chromapolaris@yahoogroups.com>

> An: chromapolaris@yahoogroups.com

> Betreff: [chromapolaris] Re: Anyone Home?

>

>
https://www.facebook.com/Chroma-Polaris-160844894027040/
https://www.facebook.com/Chroma-Polaris-160844894027040/











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The participation of Yahoo groups is definitely uncertain.

Tracy


--------------------------------------------

On Tue, 5/29/18, 'Lou Champagne' lou@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: RE: [chromapolaris] Re: Anyone Home?
To: chromapolaris@yahoogroups.com
Date: Tuesday, May 29, 2018, 12:15 PM


 









I don’t do
Facebook so this does not work for me.
 From: chromapolaris@yahoogroups.com
[mailto:chromapolaris@yahoogroups.com]
Sent: May-29-18 10:57 AM
To: chromapolaris@yahoogroups.com
Subject: [chromapolaris] Re: Anyone
Home?    This is a Facebook page.. 
The admin of this Yahoo group should start a Chorma Polaris
Facebook group.  There are possibly hundred of active synth
groups on Facbook..  A page is like a blog, a group is like
a forum.  Here is just a few synth groups on Facebook I am
a member of.  The future of Yahoo groups is
uncertain.
 Synthesizer
Freaks:https://www.facebook.com/groups/synthesizer.freaks  Synthesizers and Drum
Machines:https://www.facebook.com/groups/1082273058488596  Vintage Synth Repair And
Mods:https://www.facebook.com/groups/vintagesynthrepair  Synth Masters of the
Universe:https://www.facebook.com/groups/176962603035858  Ensoniq ESQ-1 ESQ-M SQ-80
Owner/Fan:https://www.facebook.com/groups/112719509220005  Sequential Circuits
Prophet-5:https://www.facebook.com/groups/463923000385522  Roland JX10, MKS70 &
JX8P:https://www.facebook.com/groups/983499905023030  Juno 60:https://www.facebook.com/groups/1028326427299399  Sampler & Synth
Exchange:https://www.facebook.com/groups/samplersynthexchange  DX7:https://www.facebook.com/groups/686190404823269  Kawai
K4/K4r:https://www.facebook.com/groups/657342007681547  Korg DSS-1https://www.facebook.com/groups/354416554922809  Akai AX/VX:https://www.facebook.com/groups/875052395875471  Yamaha CS Series Vintage
Synthesizers:https://www.facebook.com/groups/1600052226719709  Yamaha
TX81Z:https://www.facebook.com/groups/420398847997855  Korg
DW8000/EX-8000:https://www.facebook.com/groups/140219209788884
 









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It may be the power supply anyway, to start with. I'll have to wait to buy one and find out. It worked perfectly and then went poof, sometimes locked up and you had to shut it off and on again. I've replaced the face plates with the new ribbon cables (success), 2 sliders (much success), 2 output jacks and headphone jack (all successes).

Someone has mentioned since that the power supply on these beasts causes weird problems, even though it will power on.

$ is tight right now, but I can buy 2 of them - only need 1 of course... I thought I was being as lucid as I could be, but maybe my descriptions could be a little better.

Thanks.




 

> ... It has been very quiet here and I've

asked some questions. since

> I haven't received any answers or queries, I

figured I'd ask...



Speaking only for myself, I suspect that there haven't
been many replies for two main reasons:



1) It isn't really clear what the 'problem'
is

2) It was already noted that "...No o-scope...am no
repair tech"



First - without having a good description of what is really
happening (under a controlled setup) there's no easy way
for anyone to make a meaningful suggestion as we don't
know exactly what you're doing (hence what you should be
seeing).



Second - most of these sorts of issues are 'easy' to
diagnose if you can follow the signal with a meter and/or
scope - but if that's not going to be possible, then as
much as folks might want to help, it becomes very difficult
(and not very likely) that some sort of generalized 'do
this and you'll be OK' comment can be made.



Some thoughts as to how it might make it easier for people
to help.



First - start with a 'standard' configuration that
other's can duplicate/evaluate.



For instance - let's start with a 'scratch'
patch. Select patch A1 (for instance). Then select Upper
Function, Erase Prog, and select "1". Now, when
you press the "A" bank, you should see that A1
isn't lighted. Select A1 and you will year a
'basic' sound.



You can then document what specific settings you are making
- for instance:



Osc 2 Sync button on

Cutoff Slider to 3/4



Now - if some concerns are being seen with the Resonance
slider, you can describe what that means/how you see it.



For instance - if with this setup perhaps you don't seem
to start to hear any change until the resonance slider has
been moved about 1/2" and/or perhaps you don't
happen to hear any further changes when the slider is in the
last 1/2" of travel or so - then this is likely
'normal'.



It is important to keep in mind that the Polaris doesn't
have direct analog control of the parameters. That means
there are a finite number of selection that the sliders will
give you. Some have more, some have less. For Resonance,
there are expected to be a total of 8 levels. So - whether
or not there is a 'dead zone' at the top and bottom
of the sliders, the key is whether you can hear 8 different
settings as you go through the range of the slider. If you
do (and if it is increasing/decreasing in the moved
direction) then likely all is well.



Please note that a 'clean slider' doesn't
necessarily mean a 'good slider'. It is absolutely
possible to have a worn-out or loose slider that feels good,
and slides nice, but it may not actually be making the
contact as it should. You can use a simple multi-meter to
measure the voltage from the middle connection of the pot,
to see if the voltage does cleanly slide from 0v -> 5V as
the slider is moved from one end to the other. If the value
jumps, or is erratic - then further attention is required to
the actual slider.



Note - it would be expected that all of the items in the
"Adjustments and Checkout" section of the Polaris
Service Manual would be reviewed and checked.



Good luck with your efforts - and hopefully with a few more
concrete observations the people on the list will be able to
give some more concrete suggestions.



David Clarke











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BTW, it simply won't let me do some of the tests. I'll revisit it again in the near future. Try to write down the states and outcomes. I tried to follow some of the diagnostics, in the order they are written. My weakest point in repair is a MM or scope. Should have taken that electronics class!

Tracy




--------------------------------------------

On Tue, 5/29/18, 'David Clarke' ac151@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: Re: [chromapolaris] Anyone Home?
To: "chromapolaris@yahoogroups.com" <chromapolaris@yahoogroups.com>
Date: Tuesday, May 29, 2018, 1:05 PM


 









> ... It has been very quiet here and I've
asked some questions. since

> I haven't received any answers or queries, I
figured I'd ask...



Speaking only for myself, I suspect that there haven't
been many replies for two main reasons:



1) It isn't really clear what the 'problem'
is

2) It was already noted that "...No o-scope...am no
repair tech"



First - without having a good description of what is really
happening (under a controlled setup) there's no easy way
for anyone to make a meaningful suggestion as we don't
know exactly what you're doing (hence what you should be
seeing).



Second - most of these sorts of issues are 'easy' to
diagnose if you can follow the signal with a meter and/or
scope - but if that's not going to be possible, then as
much as folks might want to help, it becomes very difficult
(and not very likely) that some sort of generalized 'do
this and you'll be OK' comment can be made.



Some thoughts as to how it might make it easier for people
to help.



First - start with a 'standard' configuration that
other's can duplicate/evaluate.



For instance - let's start with a 'scratch'
patch. Select patch A1 (for instance). Then select Upper
Function, Erase Prog, and select "1". Now, when
you press the "A" bank, you should see that A1
isn't lighted. Select A1 and you will year a
'basic' sound.



You can then document what specific settings you are making
- for instance:



Osc 2 Sync button on

Cutoff Slider to 3/4



Now - if some concerns are being seen with the Resonance
slider, you can describe what that means/how you see it.



For instance - if with this setup perhaps you don't seem
to start to hear any change until the resonance slider has
been moved about 1/2" and/or perhaps you don't
happen to hear any further changes when the slider is in the
last 1/2" of travel or so - then this is likely
'normal'.



It is important to keep in mind that the Polaris doesn't
have direct analog control of the parameters. That means
there are a finite number of selection that the sliders will
give you. Some have more, some have less. For Resonance,
there are expected to be a total of 8 levels. So - whether
or not there is a 'dead zone' at the top and bottom
of the sliders, the key is whether you can hear 8 different
settings as you go through the range of the slider. If you
do (and if it is increasing/decreasing in the moved
direction) then likely all is well.



Please note that a 'clean slider' doesn't
necessarily mean a 'good slider'. It is absolutely
possible to have a worn-out or loose slider that feels good,
and slides nice, but it may not actually be making the
contact as it should. You can use a simple multi-meter to
measure the voltage from the middle connection of the pot,
to see if the voltage does cleanly slide from 0v -> 5V as
the slider is moved from one end to the other. If the value
jumps, or is erratic - then further attention is required to
the actual slider.



Note - it would be expected that all of the items in the
"Adjustments and Checkout" section of the Polaris
Service Manual would be reviewed and checked.



Good luck with your efforts - and hopefully with a few more
concrete observations the people on the list will be able to
give some more concrete suggestions.



David Clarke











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Also, who has the time to come here and help jokers like me? Yahoo has some serious mail problems. It keeps locking up on me and barfing in many sordid ways. I don't know what I did to Yahoo, but...

I know I share what I know with others and have spent a lot of time on-line over the years helping out with PC issues and even some synth stuff.

Tracy


--------------------------------------------

On Tue, 5/29/18, 'Wouter Veltmaat' fuse@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: RE: [chromapolaris] Re: Anyone Home?
To: chromapolaris@yahoogroups.com
Date: Tuesday, May 29, 2018, 5:05 PM


 









Not stopping anyone
who creates a Polaris FB group but personally I detest FB
and never will sign up for that.Who knows how long
Yahoo will uphold their groups? Nothing lasts
forever.
 From: chromapolaris@yahoogroups.com
[mailto:chromapolaris@yahoogroups.com]
Sent: dinsdag 29 mei 2018 16:57
To: chromapolaris@yahoogroups.com
Subject: [chromapolaris] Re: Anyone
Home?  

This is a Facebook page.  The admin of this
Yahoo group should start a Chorma Polaris Facebook group. 
There are possibly hundred of active synth groups on
Facbook.  A page is like a blog, a group is like a forum. 
Here is just a few synth groups on Facebook I am a member
of.  The future of Yahoo groups is uncertain.  









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