Rhodes Chroma Polaris

Hi,

Has anyone had this? When you switch banks the polaris freezes. But you can select programs in the bank that is selected. You can use midi program change though.
And when powered up the polaris doesn't always fully boot which may be related to the power being too low so you have to adjust the power regulator for that.

Cheers

> From: fuse@...
>
> Has anyone had this? When you switch banks the polaris
> freezes. But you can select programs in the bank that is
> selected. You can use midi program change though.
> And when powered up the polaris doesn't always fully boot
> which may be related to the power being too low so you have
> to adjust the power regulator for that.

When does the freeze occur, when you press the letter, or when you press
the subsequent number? Do all the other switches on the right side of the
panel work normally?

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...

Hi Paul,

It stalled after pushing a bank button.
Besides switching it on did stall most of the time as well. Guess some part
in the power circuit is acting up.

After having opened the unit and pushed on some ICs and hooked it up to the
power again it blew a fuse.
So I guess I have to get it looked at by a professional. (Which I'm clearly
not)
Hopefully he can fix my mistake.

> -----Original Message-----
> From: chromapolaris@yahoogroups.com
> [mailto:chromapolaris@yahoogroups.com]
> Sent: woensdag 17 februari 2016 0:48
> To: chromapolaris@yahoogroups.com
> Subject: RE: [chromapolaris] Bank switch freezes polaris
>
> > From: fuse@...
> >
> > Has anyone had this? When you switch banks the polaris freezes. But
> > you can select programs in the bank that is selected. You can use
> midi
> > program change though.
> > And when powered up the polaris doesn't always fully boot which may
> be
> > related to the power being too low so you have to adjust the power
> > regulator for that.
>
> When does the freeze occur, when you press the letter, or when you
> press the subsequent number? Do all the other switches on the right
> side of the panel work normally?
>
> --
>
> Ciao, Paul D. DeRocco
> Paul mailto:pderocco@...

Hi,

Of course Paul D is the expert here. I had an idea that I wanted
to throw out:

If the reset threshold is not set correctly, could the supply dip enough when the CPU
gets busy responding to some button push to cause reset to glitch on?
Maybe not long enough to reset the CPU but long enough to mess it up?
Does that make any sense?

Bob

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

On Wed, 2/17/16, 'Wouter Veltmaat' fuse@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: RE: [chromapolaris] Bank switch freezes polaris
To: chromapolaris@yahoogroups.com
Date: Wednesday, February 17, 2016, 8:06 AM

Hi Paul,

It stalled after pushing a bank button.
Besides switching it on did stall most of the time as well.
Guess some part
in the power circuit is acting up.

After having opened the unit and pushed on some ICs and
hooked it up to the
power again it blew a fuse.
So I guess I have to get it looked at by a professional.
(Which I'm clearly
not)
Hopefully he can fix my mistake.

> -----Original Message-----
> From: chromapolaris@yahoogroups.com
> [mailto:chromapolaris@yahoogroups.com]
> Sent: woensdag 17 februari 2016 0:48
> To: chromapolaris@yahoogroups.com
> Subject: RE: [chromapolaris] Bank switch freezes
polaris
>
> > From: fuse@...
> >
> > Has anyone had this? When you switch banks the
polaris freezes. But
> > you can select programs in the bank that is
selected. You can use
> midi
> > program change though.
> > And when powered up the polaris doesn't always
fully boot which may
> be
> > related to the power being too low so you have to
adjust the power
> > regulator for that.
>
> When does the freeze occur, when you press the letter,
or when you
> press the subsequent number? Do all the other switches
on the right
> side of the panel work normally?
>
> --
>
> Ciao,           
   Paul D. DeRocco
> Paul             
  mailto:pderocco@...



------------------------------------
Posted by: "Wouter Veltmaat" <fuse@...>
------------------------------------


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

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> From: Bob Grieb
>
> If the reset threshold is not set correctly, could the
> supply dip enough when the CPU
> gets busy responding to some button push to cause reset to glitch on?
> Maybe not long enough to reset the CPU but long enough to mess it up?
> Does that make any sense?

Yes, that's a common problem with the early power supplies. Which is why
there is a later rev of the supply that doesn't have a reset threshold
adjustment.

That wouldn't explain the blown fuse, but it's worth looking at anyway, if
the supply is the old one with the three trimmers.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...