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ChromaTalk Archives: March 2009

New Owner for #21030348

Arun Majumdar [21030348+]

Hi Folks,

I just purchased Chroma serial # 21030348 (with Midi CC+ upgrade) from Richard Willoughby and am new to this list. I will be posting some videos on YouTube of the Chroma (around the the end of March) to go with the videos I already have (of my CS80) on there. This site is such a great resource and I am looking forward to playing and developing new patches on this wonderful machine.

Has anyone on the list actually done the mod to upgrade the Chroma's keyboard to poly pressure? It seems like the pressure-sensing pad is going to be the major issue but if anyone here knows of a good source for poly pressure sensors that have the form fit factor into the damper bar, please let me know.

Thank you!

David Clarke [21030085++]

... I just purchased Chroma serial # 21030348...

Congratulations (and welcome to the list).

... Has anyone on the list actually done the mod to upgrade the Chroma's keyboard to poly pressure? It seems like the pressure-sensing pad is going to be the major issue but if anyone here knows of a good source for poly pressure sensors that have the form fit factor into the damper bar, please let me know.

I had thought about making a pressure sensor kit with sensors similar to the ones here but I never seemed to eek out enough time to get around to it.

The electronics are simple - the two bits of effort would be finding appropriate sensors, and then finding a 'good' way to have them attached to the damper bar so that you still had a good feel.

Ken Ypparila [21030229]

I made one back in the '80s with some pressure resistors printed on mylar that were available at the time. You have to convert the output to a voltage and multiplex each resistor using the signals from the pressure connector on the Chroma. It's probably more trouble than it's worth.

Arun Majumdar [21030348+]

Hi David,

Thank you for the warm welcome :)

The one that I found that would look like it would fit and seems to fit the same design as your notes is here:

http://www.sensitronics.com/products/force_sensing_resistor.htm

And this one looks much more interesting:

http://www.tekscan.com/flexiforce/flexiforce.html

I'm trying to find a lower cost solution - the link looks like its 28$ for 5 resistors which means spending over 300$!!!

However, he flexiforce might be cheapest since it is sold by the inch and you get an 8-pack of 8 inches for less than buying the resistors - also, some advantages are listed over the area based approaches:

Any thoughts on this are most welcome.

Wayne Griffin [16330111]

Couldn't help but think of the CS-80 :)

Arun Majumdar [21030348+]

Well, I wonder how many people would like to have a sensor kit if one existed. I would certainly pay for one :)

In the meantime, count my vote on that and I will keep you updated of the search for cost-effectiveness.

In fact, I found one source that can custom make them in any way: http://www.sensitronics.com/

But I have not gotten to find out how much it would be --- of course, if there's 50 people that want one, then the economics of small scale prototyping might merit it as a custom build. I will find out about it.

I'm sure it will be too expensive for a one-off but I will ask them what they think. If anyone wants to send me a message as a "vote" for a pressure sensor kit, I will be happy to get the mail and report the statistics on the ChromaTalk - or we could just write in a vote and have it on record?

Arun Majumdar [21030348+]

On Sun, Mar 1, 2009 at 6:56 PM , Ken Ypparila wrote:

I made one back in the '80s with some pressure resistors printed on mylar that were available at the time. You have to convert the output to a voltage and multiplex each resistor using the signals from the pressure connector on the Chroma. It's probably more trouble than it's worth.

I appreciate the insight - I'm going to treat this as a part-time hobby project so I hope to uncover a way forward in the next months. I probably won't be able to start until the end of March since I'm bogged down with work but this instrument is so fascinating and I would like to make it as complete as it can be. Thanks!

Arun Majumdar [21030348+]

On Sun, Mar 1, 2009 at 6:59 PM , Wayne Griffin wrote:

Couldn't help but think of the CS-80 :)

That's exactly why I would like to build the poly-pressure into it --- it's a joy to play the CS80 and I am sure it will be an even greater joy to play the Chroma (with it's layering possibilities) in a similar way.

Paul Hackett-Evans [21010094]

If anyone wants to send me a message as a "vote" for a pressure sensor kit, I will be happy to get the mail and report the statistics on the ChromaTalk - or we could just write in a vote and have it on record?

I'd vote for it!!!

Proviso - The Chroma has the nicest action of any keyboard I've ever tried. The pressure sensor would have to be done in such a way as not to spoil the feel of the keys.....

Daniel Rickenbach [21010172]

I'm interested in a sensor kit. At the moment, I don't know if I can reanimate my Chroma. (I bought it as a defect intsrument). But if it works, then I'm looking for a polyphonic after-touch-option. I like poly-AT, (I have an GEM S3, wich has Poly-AT).

Dave Bradley [16330135]

I would be up for a pressure sensor kit!

Arun Majumdar [21030348+]

Hi,

I will do a comparison - however, I also own the Alesis Andromeda. Each of these instruments is so unique and has such a unique tonal character that a comparison would really only serve to highlight how one might combine the best characterstics of each of these instruments together in exploring musical synergies between them. So I will certainly be doing Chroma videos in the near future (certainly by April) which I will post on YouTube. And, I am sure I can do some comparisons - I think, intuitively, that hearing both instruments (or all three compared since I have the A6) will be a very useful musical excercise to bring out the best in all of them :)

Andrew Dalebrook [21010180]

Hi [Arun] :-)

I'd love to hear your thoughts on how your Chroma compares with your CS-80.

Jesper Ödemark [21010135]

New Owner for #21030348 / sensor kit

Daniel Rickenbach skrev:

I'm interested in a sensor kit.

I wouldn't say no either if the cost is OK and it won't mess up the feel of the keys.

Peter Forrest [21010096]

Re: New Owner for #21030348 / sensor kit

I don't have a Chroma at the moment but would seriously consider buying an aftertouch kit in readiness for finding a Chroma to fit it into. Poly aftertouch is such a wonderful expressive tool, and going with the excellent keyboard of the Chroma would make it even more of a pleasure to play. Like Jesper says, the provisos are that the cost has got to be right, and it mustn't mess up the feel of the keyboard.

But I can imagine a time in the future when everyone who likes playing synths pianistically-plus would be looking for a Chroma with poly aftertouch. The CS-80 is now out of price range for most of us (and only has plastic keys, even if they have a very nice feel), and the T8 seems to have shot up as well; so it's only the Chroma with this possible mod which could still be a more-or-less affordable synth with this feature. And it would after all only be providing what the designers aimed for in the first place.

Richard Willoughby [21030348]

That's my one and only......

it was just too heavy and awkward to play out with.... (keeping in mind I gig out with several synths)........it was either the Chroma or the A6..... :(

I will always be keeping my eyes out for faulty ones going cheap though......I could see myself picking up another down the road....

Tim Siefkes [21030850]

Hi Arun...

Welcome to the Chroma group! Nice to see you in here. (I know you from over on the CS-80 list). Together these make a nice pair of synths, don't they?

I also have a copy here of Richard Willoughby's "Devil Between Mirrors" CD. Did he sell you his one and only Chroma or does he still have another one?

Joe Porter [21030058]

Re: New Owner for #21030348 / sensor kit

I would be interested as well, at the right price without affecting the feel.

John Leimseider [21030434++]

I've had pressure in my Chroma for many years... I've also installed or adjusted 4 or 5 of them. The factory pressure kit works great, however... the installation is very critical. If it's too low, the velocity feels lousy. If it's too high, you can't really use the pressure. A sixteenth of an inch wrong on any of the 4 supports makes it terrible. When it's just right, you can't feel any difference in the action.

I got my kit from a customer who hated it. I tried to convince him to try it again, but he wasn't interested. I sure was! It adds a great modulation source to this instrument. The Chroma is still my favorite polysynth, and the pressure puts it in a league by itself. If someone wants to make new kits, that would be awesome!

Arun Majumdar [21030348+]

it was just too heavy and awkward to play out with.... (keeping in mind I gig out with several synths)........it was either the Chroma or the A6..... :(

Hi Richard,

Well, I also have an A6 and it is a wonderful piece of gear so you aren't "downgrading" by any means --- they're just different. I've compared my CS80 to the A6 and I love 'em both and I'm sure I'll have the samel feelings for your wonderful instrument --- and we'll do some videos on YouTube :)

Thank you so very much!

Arun Majumdar [21030348+]

I also have a copy here of Richard Willoughby's "Devil Between Mirrors" CD. Did he sell you his one and only Chroma or does he still have another one?

Hi Tim,

Yes - he sold me his Chroma - don't know if he has another! I expect to do the pickup from him in the next weeks (as I just purhcased it). I did listen to he "Devil Between Mirrors" online on the link on this site. I think it will pair up fantastically with the CS80!!!

John Leimseider [21030434++]

One of the really great aspects is the unusual uses of the pressure. The threshold pressure [see for instance Modulation 1 Select] is unique, as is the waveshape modulation, particularly of the sawtooth. You can get octave "feedback" polyphonically that you can't really do any other way on the Chroma, or on any other instrument I know of. The Syntech MIDI interface also lets you send either poly or mono pressure. Thanks Ken [21030229]...

Arun Majumdar [21030348+]

On Mon, Mar 2, 2009 at 12:29 PM , John Leimseider wrote:

I've had pressure in my Chroma for many years... I've also installed or adjusted 4 or 5 of them. [...]

Hi,

Wow, you've installed a few of them! Any notes or thoughts in addition to these critical insights is really welcome :)

Tim Siefkes [21030850]

On Mon, 2 Mar 2009 05:47:50 -0800 (PST) Richard Willoughby wrote:

it was just too heavy and awkward to play out with.... (keeping in mind I gig out with several synths)........it was either the Chroma or the A6..... :(

Understandable, Richard!

BTW, I keep a copy of your fine CD in my car... great for going through those snowstorms! ;-)

Jimmy Moyer [21030184]

Re: New Owner for #21030348 / sensor kit

Another vote here. I also like the Chroma for its keyboard feel and not just its sound. Aftertouch would be a real plus.

Norman Fay

Put me down for a pressure sensor kit as well. it's been something I've been meaning to ask this list for a while actually, adter the CC+ and the replacement power supply, it seems like a logical progression, if practical.

Anders Elo [21010104]

Re: New Owner for #21030348 / sensor kit

I'm all in (!) and I'll start growing a beard like Vangelis.

Lars Johansson [21030632]

Re: New Owner for #21030348 / sensor kit

Now that's a scary thought !

Jesper Ödemark [21010135]

Re: New Owner for #21030348 / sensor kit

If the beard gets me eight CS-80's I'll grow one too! :P

Anders Elo [21010104]

Re: New Owner for #21030348 / sensor kit

I see, you've been inhaling to much magic blue smoke from your PPG's! :)

Lars Johansson [21030632]

Re: New Owner for #21030348 / sensor kit

If the beard gets me eight CS-80's I'll grow one too! :P

You can't afford the elctrical bill dude !!

Jesper Ödemark [21010135]

Re: New Owner for #21030348 / sensor kit

My house is electrically heated. With eight CS-80's I could turn the radiators down. :P

More on-topic... I might imagine, but after the PSU swap in the Chroma my studio isn't heated as fast as before. I love it! :D

Arun Majumdar [21030348]

Pressure Sensor for Chroma / Ongoing Research

Hi,

I have been continuing my research on an affordable poly touch-sensor that could be made cheaply for everyone. So far, the most interesting and very cheap option seems to be in sensitive "fabrics". Here is the website I found - I'm going to research this further, but, if anyone knows about these kinds of fabrics, please write me. Or if interested in experimenting on this, let me know.

http://cnmat.berkeley.edu/resource/fabric_pressure_sensor_array

Thanks!

Leonardo Ascarrunz [no serial number]

Re: Pressure Sensor for Chroma / Ongoing Research

You may also want to look into making a resistive strip out of the foam used to protect IC's from static. It is resistive and its resistance will decrease(maybe its increase) when compressed.

Mark Smith [2103-PT-002]

Re: Pressure Sensor for Chroma / Ongoing Research

Hi -

I researched using the foam and it is not flexible enough to withstand being crushed over and over.

Arun Majumdar [21030348+]

Re: Pressure Sensor for Chroma / Ongoing Research

Hi,

I appreciate the notes.

The best solution so far (but not cheapest) seems to be: http://www.sensitronics.com/products/force_sensing_resistor.htm

Used by AKAI professional products: http://www.sensitronics.com/applications.htm#music

I will ask them about small prototype runs (http://www.sensitronics.com/contact_us.htm) just to find out what it would cost going with their solution.

I will likely need some help to review a design and figure out the best "kit" style approach, as I think there may be enough folks that might like this ... well, this is an ongoing project.

Thanks!

Stéphane Roux

Re: Pressure Sensor for Chroma / Ongoing Research

What a great idea to start such a thread !!!

I am really interested in such a project. Add my e-mail address, if any thing i can do (not a good technician, but as soon as my chroma is repaired, i may do some experiments for you)

Jesper Ödemark [21010135]

Re: Pressure Sensor for Chroma / Ongoing Research

I will likely need some help to review a design and figure out the best "kit" style approach, as I think there may be enough folks that might like this ... well, this is an ongoing project.

Just an idea... Has anyone tried ripping a more modern keyboard apart to steal the aftertouch sensing from one of those? I know they're mostly digital, but also often built with sensitivity in mind. Could it be used?

Arun Majumdar [21030348+]

Re: Pressure Sensor for Chroma / Ongoing Research

Hi,

I've looked ata few options and the best seems to be to try to get multiple FSR's (force sensitive resistors) on a strip (else, to buy them individually costs $5USD each!). I hope to get some answers this week. I will keep everyone posted on my progress :)

Thanks!

For more of Arun's investigations, see thread Ongoing R&D on Pressure Sensor, April 2009.

Chroma Polaris for sale

Steve X

Hi Chroma lovers...

i have a mint Rhodes Chroma Polaris , been flightcased all its life, really good condition, looking to sell.

Offers invited please.

UK based , near London

Steve X

CHROMA POLARIS ON EBAY UK

I have listed my Chroma Polaris on the EBAY in the uk if any one is interested. Its really minto condition, all working as original , no mods at all

Item Id: 190293255925

Picture from the auction:

Steve X

ebayed CHROMA POLARIS last few hours

Last few hours! £690 offered

I have listed my Chroma Polaris on the EBAY in the uk if any one is interested. Its really minto condition, all working as original , no mods at all

Item Id: 190293255925

Chris Ryan [21030691]

Re: ebayed CHROMA POLARIS last few hours

Sold for £670.

Steve X

Chroma Polaris . . . .still here

Rhodes CHROMA POLARIS is

Back on EBAY.............Let down by bidder who hadn't asked his wife first!

So if you fancy it, please first check with any dependant relatives or loved ones, who might think you have too many old dusty keyboards propped up around the place already.....

If they give you the nod, please give us a bid!

ebay item

190296151762

Re: Ten Years

Go to first message in thread, February 2009.

Werner Schöenenberger [21010114]

Hi all, just second that. One of the most important links in my "favorites" list. Excellent job, Chris.

time to sell Chroma

Thomas Story [21030352]

with two kids, my photography being more than full time and my wifes pottery business slowing down it's time to let go of my hard earned Chroma.

It has been overhauled by Greg out here in Emeryville California, has a new modern power supply, the CPU+ with midi interface. The wood could be refinished to smarten it up a bit, but looks "average". No case, but has original manuals and foot pedals. All keys works etc.

Entertaining offers. I will get pictures of it up by this weekend at the latest.

Incredibly sad to see it go, but I hate to see it just sit there even more, instruments like this need to be played. I just don't have the time anymore.

Feel free to contact me with any questions.

Flight Case on eBay Germany

Chris Ryan [21030691]

Item #150329802746, starting bid €20,00, no bids yet, ends March 8. "Very good condition." I contacted the seller and he replied that he owned a Chroma "some years ago. A really nice synth with interesting textures, but sloppy envelopes. However, I had to let it go for other analog stuff, like ARP Odyssey and 2600."

Pictures from the auction:

Chris Ryan [21030691]

Sold for €20,00.

Chroma voice bd on eBay

Mark Smith [2103-PT-002]

Hi -

I have an early production voice board for sale on eBay. It needs tech work but all the components are preset.

Mark didn't provide a valid eBay URL or item number.

Re: Chroma 21030454 on eBay

Go to first message in thread, February 2009

Chris Ryan [21030691]

Sold for US$1525.

Apparently the sale fell through; this instrument has been re-listed as item #320348512463. Current bid is US$510, 7 bids, reserve not met, ends March 16.

Chris Ryan [21030691]

Sold for US$1526.00.

Matt

bargain!

Re: Chroma 21030384 on eBay

Go to first message in thread, February 2009

Chris Ryan [21030691]

Item #110354879580. "Buy It Now" price of US$3199, ends March 24.

The price has been lowered to US$2999.

Jesper Ödemark [21010135]

ebay chroma

Located in the US, great condition by the looks of the pictures. No serial mentioned... Comes with manuals and midi interface.

Chris Ryan [21030691]

Re: ebay chroma

This is Chroma 21030384, formerly owned by Michael Welch. It was first listed at US$3199 (see Chroma on eBay, February), then lowered to $2999 a week or so ago.

Chris Ryan [21030691]

The listing has ended and a buyer is shown, but it's not clear to me that it actually sold: there are "0" bids shown on the item.

Jesper Ödemark [21010135]

"This item has ended with Buy it Now." and there is a bidder. I was amazed that a US Chroma got that expensive. I bet your work along with David's, Sandro's and Luca's have a huge part to play in the continuing interest in the Chroma!

Footswitch on eBay

Chris Ryan [21030691]

Item #320349330963, starting bid US$9.99, no bids yet, ends March 19.

Picture from the auction:

Chris Ryan [21030691]

Sold for US$14.51.

New Parameter Chart

Chris Ryan [21030691]

I've posted a preliminary new version of the parameter chart. My aim is to improve readability and utility. Changes include:

  • explicit representation of modulation selections from Pitch, Wave Shape, Cutoff, and Volume to Glide, Sweep, and Envelopes 1 and 2;
  • differentiation of parameters and functions not available in a stock Chroma or Expander (use of grey colour);
  • comprehensive list of Set Split commands;
  • comprehensive list of Syntech and CPU Plus (CC+) panel parameters;
  • additional information for some parameters;
  • redrawn Patch [1] routings;
  • elimination of heavy black borders around all the parameters;
  • use of mixed case, which is easier to read than all caps.

Please have a look and send feedback. Until this is finalized you can still download the original parameter chart.

Dave Bradley [16330135]

Looks very readable, Chris.

Michael Zacherl [21030253]

Hey Chris,

that looks very good indeed! Even on my small 17" LCD I can read all entries without heavily zooming in. Very useful!

Chris Smalt [21010280+]

Looking great. However I don't agree with the inverted list order. The tables on the old chart correspond with the motion of the parameter slider (or mouse or whatever you edit with). Only the Patch modes were listed with the simplest at the top, which IMO should have been upside down for consistency.

In the new chart, because of the inversion of most tables, there is a new inconsistency: most are now "upside down" compared to parameter slider movement, but since you left the tables for the bipolar parameters (mode depth) unchanged, these are still "in sync" with the slider.

Chris Ryan [21030691]

I changed this deliberately (obviously), but good catch in my omission of the bipolar mod depth parameters. My thinking was that the effort in scanning a numerical list in inverse order was more significant than the mapping of values to slider motion in order to set the desired value. In other words, top-to-bottom reading order for the chart whereas the slider is moving through an invisible list in which each value appears "in place" on the display, and an "up" motion perhaps naturally corresponds to an increase in values.

This is in some ways similar to my decision to use reverse chronological order for the left-side navigation links representing the years of the mailing list archive (for instance, look at the navigation links while January 2008 is the current page), while the months are listed January through December, top to bottom. When I first put together the new site, I had the months running from December down to January, to maintain consistency with the reverse order of the years, but I thought readability suffered.

It's an interesting issue. What do others think about this?

Jesper Ödemark [21010135]

I agree with the slider movement comment. I prefer having a chart that correspond to the movement of the slider. Even though my Chroma is hooked up with a midi control box it feels more logical to read from below like other sliders correspond to turning. As it looks now it's more of a home organ design with bars to pull. Synthesists call it CS-80 style. :)

Michael Zacherl [21030253]

Since I do have to translate an abstract number to a function anyway the direction doesn't make any dfference to me. E.g. to me the "Waveshape" (11) doesn't 'increment' or 'decrement' from "square" to "pattern f" or "lag square".

I don't have any preferneces here and I obviously didn't even recognise the change. ;-)

David Gowin [21030611]

Beautiful work! Thank you for all the efforts!

Chris Smalt [21010280+]

This is in some ways similar to my decision to use reverse chronological order for the left-side navigation links representing the years of the mailing list archive (for instance, look at the navigation links while January 2008 is the current page), while the months are listed January through December, top to bottom.

I think that's unnatural also... :-)

Back to the parameter charts: I never gave it much thought, but now that I do, I think I tend to "see" these things in a three dimensional graph, so a high value can be "up", more "to the right" or more "to the front/back".

My thinking was that the effort in scanning a numerical list in inverse order was more significant than the mapping of values to slider motion in order to set the desired value.

I see these lists are graphs, rather than text. Also I always scanned this particular chart starting from parameter number towards the outside, be it up or down.

Werner Schöenenberger [21010114]

Hi Chris,

again a nice work - I will post it in my studio as replacement of the old one ;-). Thanx for your support of the community.

Chris Ryan [21030691]

You might want to wait until it's finalized. Does anyone else have comments on the new chart? No one has mentioned the modulation selections design. Thoughts, pro and con?

Anders Elo [21010104]

Perhaps the modulation parameters for volume should be placed right above instead of to the left. Doing so you could center the arrow pointing upwards from the pitch/waveshape/cutoff section. I think the arrows could be a little thinner and perhaps in a different color like blue for increased clarity.

Werner Schöenenberger [21010114]

Ok, some feedback here (maybe already said by others):

  • Bug: Mod-arrow at "45" should start at "44" instead
  • Maybe the color of pressure parameters should be different to those of CC+/syntech
  • I like the mod section as it is, maybe colors of outgoing arrows might be different to ingoing ones
  • maybe a remark how to enter/exit the programming mode might be helpful

Everything else is perfect.

Re: SPSU Repairs/Replacement

Go to previous messages in thread, March 2008

Keith Hendricks

Luca,

I purchased a SPSU about one year ago and recently finally had it installed. A few weeks after installation the power unit has failed. My tech lives in another state, so I would like to troubleshoot the SPSU without having to ship it for repair. Do you have any suggestions to troubleshoot the problem?

Luca Sasdelli [21010226]

Hi Keith,

Sorry for the failure; indeed, your one is the first experiencing an early failure. Could you please let me know what kind of failure do you experience?

A quick check list could be as follows:

SPSU PCB: inspect it very carefully under a magnifying lens, to double check if some metal debris are shorten some tracks on component side. If available, use compressed air and/or a soft brush to make the PCB fully clean. Recheck it if now working.

Detach all three Chroma connectors from PCB and check if voltages are present on it; attached [spsu.pdf] there is a printout of PCB bottom layer, with relevant comments. The printout is as seen from TOP, so you can simply flip the page to make is appear as bottom.

If voltages are now Ok, you can check current requirements from Chroma as per Upgrading the Rhodes Chroma Power Supply [Don Tillman]. If current values are over the above values, there could be a failure within the Chroma itself, making the PSU drain too much current.

If current values are Ok, you can inspect SPSU parts:

Check DC outputs from terminal blocks: -12V, +12V, +5V; if one or more aren't present, disconnect all relevant cables and check again. If voltages on terminal blocks are Ok without cables connected, you can troubleshoot the PCB; if voltage aren't Ok this way, the MeanWell SPSU unit could be failed and should be replaced with a new one. Should be this case, we'll check for the cheapest way to make your Chroma work again.

If SPSU unit with disconnected cables is Ok, reconnect cables to SPSU PCB to terminal blocks and check some voltages on PCB as follows:

U101 regulator (the one with heatsink): Pin 3 is connected straight to +12V line. Pin 2 is regulated output and it should be +5V (LED lit); if zero, power off and check with an ohmmeter if a short is present on U101 between pin 2 and PCB ground. If short, inspect C103, R103 and LD101 for short. Check also C102: it is a tantalum capacitor and sometimes this type of cap is known to fail short: should be shorten, U101 will not have reference voltage and there will be no +5V output.

If not short circuits are found, U101 could be failed; it is a common LM317T component, easy to find out. Its cost is far less than have I shipping a new one. If this is the case, just to make sure there aren't thermal causes within your Chroma, please replace the heatsink with a bigger one; you can also extend the heatsink by mounting a dissipating metal plate under or aside the PCB, using a longer fixing screw and bolt, taking great care not to create short circuits with bottom pins. Please note that U101 case is +5V, therefore it must not touch any other Chroma part.

+12V and -12V are straight to output connectors, so have just a look to check for continuity with an ohmmeter as per above, using attached diagram as reference; if SPSU alone is Ok, they should be okay as well.

Please let me know how it goes

Keith Hendricks

Luca,

When I power on the Chroma, sometimes it will work for a few minutes and then fail; other times the failure is at startup. The error message I get is the 01234567 message indicating all voice board failure with no audio output. Sometimes at startup, it will play for a few minutes before failure. I'm probably not technically competent to do the testing you suggest below, so I will have to ship the synth to my tech.

Dual Footswitch on eBay

Chris Ryan [21030691]

Item #290304504914, starting bid £150.00, no bids yet, ends March 28. "Perfectly working," according to the seller.

Pictures from the auction:

Chris Ryan [21030691]

Didn't sell; re-listed as Item #290306156902 with a price of £139.00. No bids yet; ends April 4.

Go to next message in thread, March 2009