BY now many of you have probably seen....
I have formed a CAD designed board to accomplish offering a sync mod for the CS's... yes, all 3 of the 50,60 &80. It's listed on e-bay, but thanks to millions in recent medical bills and more surgeries for my wife, I can't pop the dough for the qty needed. ?I am able to provide working protos, but that's not logical as it takes hrs to hard wire it all up. If any of you haven't seen this, here's the e-bay link:
| | | | | | US $199.00 New other (see details) in Musical Instruments & Gear, Pro Audio Equipment, Synthesizers | | | | Preview by Yahoo | | |
Hopefully, there's enough of you who appreciate the accessibility of this mod, cause until now, they cost a ton from Kent, plus you have to send your baby off to get it done. Hope you folks want some of these, I wiull only need about 10 days to stuff and ship the finished boards !
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Re: CS 50 due for overhaul: Any pointers?
Thank you for all your responses, much appreciated.
?
Apparently, my messages make it to the list again. Thanks, David!
?
Stephen
?
Gesendet:?Donnerstag, 23. Juli 2015 um 16:37 Uhr
Von:?"'Rikard Latvala' rikard.latvala@... [yamahacs80]"
An:?yamahacs80@...
Betreff:?Re: [yamahacs80] Re: CS 50 due for overhaul: Any pointers?
?
?
I did a big overhaul of a CS-50 including:
?
Change of all CMOS.
Recap of all Caps (ceramics, mylars, Polystyrene, tantalum and aluminium electrolytics changed to Panasonic FC series)
Changed all open type trimers for closed multi turn one?s.
Total recalibration
installed Kenton MIDI kit.
?
Now it stays rock solid in tune.
?
Have a CS-60 and a 50 at home for the same work.
Noticed CS-60 has all IG chips in low cost sockets (They will be desoldered and replaced by
high quality gold plated one?s)
?
Also have done a complete socket change on a memorymoog with one voice
dropping out of the autotune routine, with new sockets for all the CMOS and Analog IC?s
the voice will not be dropped but still is quite out of tune. It did have a few other issues which
are now gone with the socket upgrade.
?
Just some ideas for your CS-50.
?
-----Originalmeddelande-----
Fr?n: "blatnik_michael@... [yamahacs80]" <yamahacs80@...>
Till: yamahacs80@...
Datum: 2015-07-21 11:00
?mne: [yamahacs80] Re: CS 50 due for overhaul: Any pointers?
?
hi, maybe this page is of interest, some good hints for repair there.
my cs60 is still working perfect, but i?m also thinking about changing some parts. especially the (standard) ic?s on the KAS and old capacitor (on the PSU) should be changed, this also should solve your problems.
michael
?
?
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Re: CS 50 due for overhaul: Any pointers?
I did a big overhaul of a CS-50 including:
Change of all CMOS.
Recap of all Caps (ceramics, mylars, Polystyrene, tantalum and aluminium electrolytics changed to Panasonic FC series)
Changed all open type trimers for closed multi turn one?s.
Total recalibration
installed Kenton MIDI kit.
Now it stays rock solid in tune.
Have a CS-60 and a 50 at home for the same work.
Noticed CS-60 has all IG chips in low cost sockets (They will be desoldered and replaced by
high quality gold plated one?s)
Also have done a complete socket change on a memorymoog with one voice
dropping out of the autotune routine, with new sockets for all the CMOS and Analog IC?s
the voice will not be dropped but still is quite out of tune. It did have a few other issues which
are now gone with the socket upgrade.
Just some ideas for your CS-50.
-----Originalmeddelande-----
Fr?n: "blatnik_michael@... [yamahacs80]" <yamahacs80@...>
Till: yamahacs80@...
Datum: 2015-07-21 11:00
?mne: [yamahacs80] Re: CS 50 due for overhaul: Any pointers?
? hi, maybe this page is of interest, some good hints for repair there.
my cs60 is still working perfect, but i?m also thinking about changing some parts. especially the (standard) ic?s on the KAS and old capacitor (on the PSU) should be changed, this also should solve your problems.
michael
|
Re: CS 50 due for overhaul: Any pointers?
hi, maybe this page is of interest, some good hints for repair there.
my cs60 is still working perfect, but i?m also thinking about changing some parts. especially the (standard) ic?s on the KAS and old capacitor (on the PSU) should be changed, this also should solve your problems.
michael
|
Hi folks,
Long time no posting on here... but I thought I'd return to ask a question and also share an idea....
I have recently revisited a duff voice card in one of my CS80's... it was low in pitch and wouldn't pull in via the tuning calibration procedure.
After fault finding around the transposition gate area and finding nothing, I bit the bullet and replaced the Osc chip. That cured it... i was really hoping it wasn't that, I even lifted the Osc chip out and was still getting the same fault condition voltages on CP6 as with it in. But go figure eh...?
So, on this particular CS80 this is my 4th Osc chip that has needed replacing...! My other CS80 has never had an Osc chip go... so my question is, are they any others out there who need to - quite regularly - replace a faulty Osc chip...? Or am I just really, really, unlucky...?!?
I am going to attempt a full calibration on this machine sometime soon... which leads me to the old problem of sliding the cards in and out..! Catching those thin wires on the back of the print on the card to it's left... or pulling on the thin wires on the card to it's right with it's own soldered side...!
So I came up with a solution which I'd like to share. It really aids in removing and also replacing the cards without any "catching" whatsoever.
I had an old plastic water container lying around and I looked at it and it suddenly struck me... so I cut out the sides. It was one like this... you end up with a smooth, thin, tough plastic sheet.
http://ecx.images-amazon.com/images/I/21AYN0znB9L.jpg
Cut them, height wise, to just fit between the "rails" and make them deep enough so that they reach right to the back but also protrude a little past the front of the boards. After loosening the two card screws you can easily slide them in either side of the card you want to remove... and the card will just slide out in between them - with no 'catching'...!
Replacing the card is just as easy - make sure both sheets are up against the cards on either side and then just part them and slide your card back in. Pull out the sheets and you're done...!
Hope this makes life a little more easy for you when you're servicing.
Cheers, Tom
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CS 50 due for overhaul: Any pointers?
Hi all,
?
I have finally managed to talk my tech into having a go at my CS 50 -- any things that require particular attention or that should be looked at? My 50 has the habit of occasionally producing portamento on some notes even though no portamento has been dialled in. Sometimes (very rarely) notes with a long release have a tendency to drift upwards in pitch -- I seem to remember that this is due to some caps gone bad on the KAS board, is that true? What CMOS components should be replaced as well?
?
Any inspiration is welcome. Thanks,
?
Stephen.
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hi david, thank you very much!
bye michael
"David Rogoff david@... [yamahacs80]" <yamahacs80@...> schrieb am 19:15 Dienstag, 14.Juli 2015:
?
Hey Michael.
Congrats on getting the CS60! ?The sub-osc problem should be pretty easy to trace if you are comfortable opening it up and can read a schematic. ?I have the service manual on my website here:?
If you look at the bottom left of the giant schematic, you’ll see the sub-osc goes to the front panel controls and then to the R6 board. ?The R6 is just a bunch of resistors that mix the mod voltages and sends them to the voice cards. ?Sounds like the problem is there - probably just a broken wire. ?If it’s just voice 7 for VCO mod, then it would be the VB7 output. ?If you look at the R6 board page, you’ll see that VB7 is pad 10 on the right and has a grey wire that goes to pad 36 on the 7th voice card. ?Check that this wire is solid on both ends. ?You can check it easily with an oscilloscope or even just an amplifier if you set the sub-osc to its fastest rate.
? David
Hi, i got an CS60 in wonderful condition 2 weeks ago, of course im very very happy! :)
But i found a problem, one of the voicecards (the 7th) doesnt respond to the sub-osc board.?
the card itself is working, sound is ok (osc ok).
any idea where to start the research?
Thank you!
best regards
michael
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It's not even a CS-5 replacement...
Doug? synthparts.com
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Hey Michael.
Congrats on getting the CS60! ?The sub-osc problem should be pretty easy to trace if you are comfortable opening it up and can read a schematic. ?I have the service manual on my website here:?
If you look at the bottom left of the giant schematic, you’ll see the sub-osc goes to the front panel controls and then to the R6 board. ?The R6 is just a bunch of resistors that mix the mod voltages and sends them to the voice cards. ?Sounds like the problem is there - probably just a broken wire. ?If it’s just voice 7 for VCO mod, then it would be the VB7 output. ?If you look at the R6 board page, you’ll see that VB7 is pad 10 on the right and has a grey wire that goes to pad 36 on the 7th voice card. ?Check that this wire is solid on both ends. ?You can check it easily with an oscilloscope or even just an amplifier if you set the sub-osc to its fastest rate.
? David
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Show quoted text
Hi, i got an CS60 in wonderful condition 2 weeks ago, of course im very very happy! :)
But i found a problem, one of the voicecards (the 7th) doesnt respond to the sub-osc board.?
the card itself is working, sound is ok (osc ok).
any idea where to start the research?
Thank you!
best regards
michael
|
Hi, i got an CS60 in wonderful condition 2 weeks ago, of course im very very happy! :) But i found a problem, one of the voicecards (the 7th) doesnt respond to the sub-osc board. the card itself is working, sound is ok (osc ok). any idea where to start the research? Thank you! best regards michael
|
Hi Daniel. ?Thanks for the link to the manuals. ?I guess these keyboards could be fun if cheap enough. ?However, it has zero in common with the classic CS series. ?Different oscillators. Different filter (no 2-pole or high-pass/band-pass). Different envelopes. No ribbon. No aftertouch - channel or poly. ?Not even velocity.
It's just a fairly generic VA that doesn't even have presets unless you use their new WebMIDI thing.
At least it's good that owners of the real beasts don't have to worry that this will somehow hurt the value of their instruments!
?David - back to some really cool CS80 mods I'll be sharing soon
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Manuals can be downloaded here:
For CS unfortunately no Poly Aftertouch, even not on receive side.
MIDI spec is not so bad, all parameters can be controlled by SysEx and even by standard MIDI controllers.
Daniel Forro
On Jul 8, 2015, at 12:04 PM, Daniel Forró danforcz@... [yamahacs80] wrote: Yes, but lot of features are missing, to me it's just incomparable, it's just a toy. Exactly that important performing aspect was omitted, all that what makes a difference between musical instrument and a toy - range of the keyboard, polyphonic aftertouch and lot of other... Here even the right hands can't do much :-)
But of course there's a possibility of MIDI control, let's wait for machine's detailed MIDI implementation and see if it's only preset toy or if there's full RPN/NRPN and SysEx control... Maybe it can receive polyphonic aftertouch like many other digital Yamaha synthesizers.
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Re: Forum waking up / CSxx mod development platform
I know! And not once, but in other reface videos/livestreams Nate Tschetter keeps saying "C.S." stood for "control synth"? : (
I hope he is told "Combo" is the proper term here before NAMM gets underway tomorrow...Hopefully someone there will help him see the light. If not, I may have to go there myself and straighten him out!
Now, I need my CS-80 repaired...any reputable techs near the Houston-Dallas-St. Louis-Chicago range of Longitudes? I'm willing to drive it to any of these places or points in-between.
Sincerely, Tommy Priakos
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the only water they tested was riddled with kool aid
I cant believe they said the "CS" series stood for control synth....talk about not knowing your greatest historical acheivement next to the grand piano...
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Show quoted text
They could be testing the water, working up to something big….
> On 8 Jul 2015, at 7:00 pm, Timothy Siefkes tim_s@... [yamahacs80] <yamahacs80@...> wrote:
>
>
> That’s no CS-80 replacement... Sorry, Yamaha.
>
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They could be testing the water, working up to something big….
toggle quoted message
Show quoted text
On 8 Jul 2015, at 7:00 pm, Timothy Siefkes tim_s@... [yamahacs80] <yamahacs80@...> wrote:
That’s no CS-80 replacement... Sorry, Yamaha.
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Yahoo Groups Links
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That’s no CS-80 replacement... Sorry, Yamaha.
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oh no - more cheapo synths.
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Yes, but lot of features are missing, to me it's just incomparable, it's just a toy. Exactly that important performing aspect was omitted, all that what makes a difference between musical instrument and a toy - range of the keyboard, polyphonic aftertouch and lot of other... Here even the right hands can't do much :-)
But of course there's a possibility of MIDI control, let's wait for machine's detailed MIDI implementation and see if it's only preset toy or if there's full RPN/NRPN and SysEx control... Maybe it can receive polyphonic aftertouch like many other digital Yamaha synthesizers.
Daniel Forro
On Jul 8, 2015, at 10:46 AM, Tommy Priakos tpriakos@... [yamahacs80] wrote: I am going to reserve judgment on these products. Back when I first played a (brand new) CS-80 at a music store I had no idea of its potential until I heard UK's Eddie Jobson and Vangelis using it on their albums. ?The reface CS sounded like it has promise - in the right hands.
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I am going to reserve judgment on these products. Back when I first played a (brand new) CS-80 at a music store I had no idea of its potential until I heard UK's Eddie Jobson and Vangelis using it on their albums. ?The reface CS sounded like it has promise - in the right hands.
Tommy
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It will come on the market in September, each piece for 799 USD. I really wonder who would buy it. This trend of combination of toy (small range mini keys keyboard, speakers, battery power...) and quite good tone generator with professional features started Korg few year ago, but for whom?
Daniel Forro
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Nigel99