Chroma Polaris not responding to midi
2018-08-10 by paul@...
Hello I’ve got a beautiful fully restored Chroma Polaris. I’ve been re-wiring my studio space and in the process a weird quirk has occurred with a few of
Messages
Browse messages
Page 4 of 39 · 1915 messages matched
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-08-04 by conor.strachan@...
Another thing It is doing is when first switched on and with the headphones I manage to get it very simply calibrated and I get about 10 seconds of playing
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-08-03 by conor.strachan@...
Hi Dave Thanks so much for the test instructions, feel like I am nearly there with it. It does not freeze in case #1 or #2. It is only freezing when connected
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-08-03 by David Clarke
... In addition to Paul s reply, a couple quick practical tests should help to focus where to look/what to look at. 1) install a cable into the Polaris
RE: [chromapolaris] RE: Polaris Later version Secondary board [5 Attachments]
2018-08-03 by conor.strachan@...
Hi Paul Thanks for your response.. The black ground at the top of headphone measuring the top of both the two next door in the same top ground place (where the
RE: [chromapolaris] RE: Polaris Later version Secondary board [5 Attachments]
2018-08-03 by Paul D. DeRocco
... The factory modified the design at some point. Originally, the brown wire was intended to be used as the ground on the headphone jack. They changed that,
RE: Polaris Later version Secondary board
2018-08-03 by conor.strachan@...
Hi there Just an update, if anyone can help me out that would be great. I recapped and I am no longer getting freezes but I think I have finally isolated the
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-17 by Tracy Barber
Right. These were the early days of CPU of any power at all. IBM PC was 4.77 MHz and the Polaris had an 80186, yes? I figured it wouldn t hurt it any
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-17 by Paul D. DeRocco
... It probably does reduce the temperature, but I don t think we ever had any problems caused by the hot CPU. They re rated for 70C, or 158F, which is pretty
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-15 by Tracy Barber
Yup. Just take it slow because it could be easy to bust a pin below the container. Not only that, they can get stubborn and hard to slide. But, if you take
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-15 by Paul D. DeRocco
... I guess there are two different sockets. The one I ve got goes the other way. But it is a matter of sliding the cover. -- Ciao, Paul D.
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-14 by Tracy Barber
The CPU cover slides to the left and then up. Tracy ... On Fri, 7/13/18, conor.strachan@yahoo.com [chromapolaris] wrote:
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-14 by Tracy Barber
They tuck under just fine. As long as you don t man-handle them. The only conclusion I can come up with is when they were looped out, they must ve touched
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-14 by Tracy Barber
I should have said when the cover was on. My mistake. Tracy ... On Fri, 7/13/18, conor.strachan@yahoo.com [chromapolaris]
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by Paul D. DeRocco
... Yes, it s R4. I misread the schematic. ... Sounds good. ... I m sure the regulators are okay, or they d be putting out a much higher voltage or zero. ...
RE: Polaris Later version Secondary board
2018-07-13 by conor.strachan@...
Hi Paul Thanks for your reply. The amount of noise coming off the output with the crackling It does make me think it s a power thing coming. Do you mean the VR
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by Paul D. DeRocco
... If it works for a while, then quits and never comes back, I would suspect the following sorts of things: * Fading EPROMs, which occasionally drop a bit.
RE: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by Paul D. DeRocco
... That s because none of us knows the answer. ;-) Your observation of the tails touching the output board is something that I never noticed. On the other
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by conor.strachan@...
Hi there Well I ve got it all out on a bench so no membrane tail contact.. What happens is it powers on is responsive like normal for 5 seconds then it starts
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by Tracy Barber
I did forget to say my voltages were in range as well on the ribbon cables, amongst other things. But, I m not a tech - just a lowly newbie. :) Tracy ... On
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by Tracy Barber
I had the same freezing problem after installing the new membrane. Found out that the tails on the right side drooped too low and were touching the Output
Re: [chromapolaris] RE: Polaris Later version Secondary board
2018-07-13 by taco taco
Hello All, I too have a Polaris which I’ve added new membrane panel to. Initially it was all frozen, gradually by power cycling (and getting to the tune
RE: Polaris Later version Secondary board
2018-07-13 by Paul D. DeRocco
... Does it ever unfreeze spontaineously, or do you have to cycle the power to get it going again? I doubt it s a DCOK problem. You should check all the power
Re: [chromapolaris] Auto Tune via MIDI
2018-07-12 by Tracy Barber
It s the lower function that gets in the way - extra baggage. I wonder if Midi Ox can allow you to set up a bunch of macros - or another Midi Tool - so that
Re: [chromapolaris] Auto Tune via MIDI
2018-07-12 by Tracy Barber
Doesn t the Polaris start in Omni Poly? Tracy ... On Wed, 7/11/18, David Clarke ac151@freenet.carleton.ca [chromapolaris]
Re: [chromapolaris] Auto Tune via MIDI
2018-07-11 by oojimentis@...
Hi David, Thanks for this great information! I was able to send a command to activate the lower function button and then perform the VCA calibration manually.
Re: [chromapolaris] Auto Tune via MIDI
2018-07-11 by David Clarke
... I was really hoping that Sound Quest would work for all the front panel ... All panel controls are available to be adjusted remotely. Details are in the
Aw: Re: [chromapolaris] Auto Tune via MIDI
2018-07-11 by albrecht storz
Hi Trevor, find an Atari 1040 ST with black-and-white-monitor, download the program POLARIST.PRG from http://www.rhodeschroma.com/?id=polarisataribankloader
Re: [chromapolaris] Auto Tune via MIDI
2018-07-11 by oojimentis@...
Unfortunately, I can t go for a new panel just at the moment :-( I was really hoping that Sound Quest would work for all the front panel operations like the
Re: [chromapolaris] Auto Tune via MIDI
2018-07-10 by Tracy Barber
Ditto on replacing the membrane. It IS worth the effort. A lot of the controller thingies and functions can be jump started like that, but nothing like a new
Re: [chromapolaris] Auto Tune via MIDI
2018-07-10 by Tracy Barber
Awesome... I knew my MIDI would come in handy some day. :) Tracy ... On Mon, 7/9/18, oojimentis@yahoo.com [chromapolaris]
Re: [chromapolaris] Auto Tune via MIDI
2018-07-09 by Paul Krull
That’s good to know.I bought my Polaris with a damaged membrane and about the only function that didn’t work was the tuning.I’ve since replaced the
Re: [chromapolaris] Auto Tune via MIDI
2018-07-09 by oojimentis@...
Hi Tracy, Thank You!! That worked, just had to convert the binary to hex (F6) and send it. Tune light flashed a few times and now it s in tune and sounds
Re: [chromapolaris] Auto Tune via MIDI
2018-07-09 by Tracy Barber
BTW - You may - over time - want to purchase a new membrane face plate from Paul De Rocco. He has them on eBay. If you are a Polaris fan, then the $ is worth
Re: [chromapolaris] Auto Tune via MIDI
2018-07-09 by Tracy Barber
Hi - If you can use Midi Ox, here goes... at least in theory. You need Midi Ox to recognize the Polaris. Hook up the synth to one MIDI port and unhook the
Auto Tune via MIDI
2018-07-09 by oojimentis@...
Hi Everyone, I recently acquired a Polaris with the left side membrane dead as a Dodo, so I am unable to auto-tune it. I thought I could access the front
New (Old?) Chroma Polaris Serious Tip
2018-06-24 by adirondack_pc@...
You know about the S curve on the left side ribbon cables? Makes sense, right? That s because the left side top board is pretty darn close to those cables
Chroma Polaris # 301654 Revived From The Dead
2018-06-24 by adirondack_pc@...
Well, after all of the questions and answers I received, my Polaris is singing a new tune. Several issues were found therein, although some of them not
Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-12 by Tracy Barber
I didn t find an errors with the panel. All combinations of the matrix gave over 300 M Ohms each when tested. ... On Sat, 6/9/18, Bob Grieb bobgrieb@yahoo.com
Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-09 by Bob Grieb
Transformers are just wire. (and a thermal fuse) They sometimes fail, but have a very low failure rate compared to other components. And they don t fail
Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-09 by Tracy Barber
... Yup. $2.95... ... Yup. That too... It works fine right now. Level and the same playing action as before. BUT - I should get a better key. Further,
Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-09 by Bob Grieb
Z207, assuming it s a 4053B, if missing will silence most of the first voice. But the osc B pulse wave should be OK on that voice. Syntaur has Polaris keys.
Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-09 by Tracy Barber
I checked all of the matrix with the Fluke. Positive results! After a fashion... The right top board measured in the 3.7x M Ohms range - all of them. The
Re: [chromapolaris] Polaris broken.... help!
2018-06-06 by Tracy Barber
That applies to me as well. Thanks. Tracy ... On Wed, 6/6/18, Gregory Cox adhmzaiusz@live.ca [chromapolaris] wrote: Subject:
Re: [chromapolaris] Polaris broken.... help!
2018-06-06 by Gregory Cox
By the way Bob, LouÆs the guy with the problem, not I ;) Anyway Lou, before you set off on a complicated journey, I would honestly re-examine the DC OK
RE: [chromapolaris] Polaris broken.... help!
2018-06-06 by Bob Grieb
That s one thing you can rule out. So it s something. If the CPU is stuck somewhere, there should be one particular address decode/chip select that s getting
RE: [chromapolaris] Polaris broken.... help!
2018-06-06 by Lou Champagne
I’m down to two 6264 now with nothing to report after having swapped them around a bit to make sure. Lou ... Are the installed RAMs 6264 types? If so, just
RE: [chromapolaris] Polaris broken.... help!
2018-06-05 by Bob Grieb
Greg, Are the installed RAMs 6264 types? If so, just two of them installed is a valid configuration, so you could remove all but two and swap those out to
RE: [chromapolaris] Polaris broken.... help!
2018-06-05 by Lou Champagne
Hi Greg et al, Following the procedure it is interesting that the power supply does not allow me to even get down to 4.8V. The closest I can get it 4.88V. So I
Re: Aw: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
2018-06-03 by Tracy Barber
I have a Windows 98 PC and a Windows 7 PC with Librarians and Midi Ox on them. Doesn t let me load a bank. Finding an Atari would be like searching for a