开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: CS-80: Output level down to nothing

 

Did this problem ever get resolved?


Re: WTB - Yamaha CS-70M

 

Just thought I'd bump this post if anyone on the USA west coast has a CS-70M for sale... preferably in Oregon or Washington State, or Vancouver BC. I'm still looking to acquire one so drop me a note if you're willing to sell/trade.

Cheers

On Sunday, November 5, 2017, 9:17:12 p.m. PST, virusindigo2@... [yamahacs80] wrote:


?

Hello all,?


I'm a longtime lurker but wanted to say thanks for this group -- its a treasure trove of information and resources.?I love vintage Yamaha synths and have a few myself -- CS-30, CS-50/60, CS-40M, SK-30.?


I've been looking to acquire a Yamaha CS-70M and was wondering if anyone might have one for sale. If so, please drop me a line to discuss. I also have a fair number of other synths I may be willing to part with if there's interest in a trade + cash deal.?


I'm based in western Canada (BC) if shipping is required. If you happen to be in BC, Alberta, or Washington state/Oregon I'm also willing to drive a fair distance to acquire one.?


Thanks so much... hope to hear from you.?



Re: L'il help needed..

 

Thanks, Kyle, I'll keep that all in mind. I have this question posted on half a dozen forums, including Muffwiggler, VintageSynth.com, moogmusic.com, and the CS-80 Facebook page, and am baffled by the lack of response for such a simple question. Perhaps there's a reason these machines are kept from artists dedicated to the craft of creating music, only to waste away in the hands of hip hop studios and wealthy collectors. Given my financial situation, I am getting tempted to sell my CS-80 at this point if this is the kind of support I can expect in the long haul. C'est la vie, I suppose…guess I'll just muse on something the late, great Kevin Lightner said in one of his final posts: "My suggestion to someone who wants a vintage synth fixed is to have a lot of patience, research everything and have no expectations whatsoever."


Re: L'il help needed..

 

Fellow CS-80 owners, with the power off, could you please do me a solid and measure the resistance between the +15V power rail on the card riser (the lower bar that the cards screw into) and ground. I am trying to figure out if the 70 ohms I'm getting is normal or if this is indicative of a partial short. Thanks! Cheers, Jonathan


I don't have one here, but 15V/70 ohms = 214 mA, which seems a low amount of current for all of those voice boards.? But since it's not powered on, it might be a reasonable impedance for this situation. Certainly 70 ohms is nowhere near a short circuit, given the large amount of circuitry present. It's not clear to me if a shorted component/capacitor would NOT show a short when no power was present, but then go short when power was applied...I don't think so...


jkjelec


Re: L'il help needed..

 

Don't all shout out at once..


Re: KAS Bd for auction on E-bay (USA Only)

 

No, it has not been tested. It was pulled from a unit that was being parted out long ago.

The unit it had been pulled from had been physically damaged.

Kyle

jkjelec@...


Sorry for the re-post; it seems most of my last post got chopped off...

On January 24, 2018 at 11:04 AM Kyle Jarger <jkjelec@...> wrote:

wrote:?

"Likely" working? So it's never been tested?


Re: KAS Bd for auction on E-bay (USA Only)

 

wrote:?

"Likely" working? So it's never been tested?


Re: KAS Bd for auction on E-bay (USA Only)

 

wrote:?

"Likely" working? So it's never been tested?


No, it has not been tested. It was pulled from a unit that was being parted out long ago.


Re: CS-80 + FC7

 

开云体育

on further reading, immediately turn off your CS80 and then remove your pedals from the back.....

read what the 2 foot jacks say....

the word pedal is not used

one jack says foot controller..... that is for the FC7
the other says Foot Switch... that is for a switch pedal....


---- On Tue, 23 Jan 2018 00:18:23 -0600 Fernando Zarone fernandozarone@... [yamahacs80] wrote ----

?

I remember this, but, afair, ?it used to work. Perhaps better to eliminate that pedal, in any case…


Il giorno 23 gen 2018, alle ore 06:39, laurie laurie@... [yamahacs80] <yamahacs80@...> ha scritto:


the original CS80 volume pedal was a lightbulb and photocell with a teardrop? shaped dowser to limit light to the photo cell...

I have yet to try my FC7s on my 80 as I once had ground rail burn out with a faulty connector short on the expression jack.... there is voltage there to power a bulb...


---- On Mon, 22 Jan 2018 15:22:18 -0600?Fernando Zarone?fernandozarone@...?[yamahacs80] <yamahacs80@...>?wrote ----?
?

Hi all.?

After one year (moved to a new house) I switched my CS-80 on and fortunately everything still works fine, but the FC-7 connected to it. The malfunction is: when I push the pedal forward ?it raises the volume /wha-wha regularly, but when I go back down to the “low “ position, the volume takes some seconds before fading. In other words, when used fot raising the volume it works, when lowering it, it is … delayed. Like a long release…?
Any clue?
Thanks

Fernando
?










Re: KAS Bd for auction on E-bay (USA Only)

 

"Likely" working? So it's never been tested?


L'il help needed..

 

Fellow CS-80 owners, with the power off, could you please do me a solid and measure the resistance between the +15V power rail on the card riser (the lower bar that the cards screw into) and ground. I am trying to figure out if the 70 ohms I'm getting is normal or if this is indicative of a partial short. Thanks! Cheers, Jonathan



KAS Bd for auction on E-bay (USA Only)

 

Hi All,


I've got a likely fully working KAS Board up for auction in the US on E-bay:


https://www.ebay.com/itm/Yamaha-CS80-CS-80-vintage-synth-KAS-Board-YM-26600-and-YM-26700-IC-chips/152875868286?hash=item23981ca07e:g:oYAAAOSwRLZaXp7m


Regards,


Kyle

jkjelec


Re: CS-80 + FC7

 

开云体育

I remember this, but, afair, ?it used to work. Perhaps better to eliminate that pedal, in any case…


Il giorno 23 gen 2018, alle ore 06:39, laurie laurie@... [yamahacs80] <yamahacs80@...> ha scritto:


the original CS80 volume pedal was a lightbulb and photocell with a teardrop? shaped dowser to limit light to the photo cell...

I have yet to try my FC7s on my 80 as I once had ground rail burn out with a faulty connector short on the expression jack.... there is voltage there to power a bulb...


---- On Mon, 22 Jan 2018 15:22:18 -0600?Fernando Zarone?fernandozarone@...?[yamahacs80] <yamahacs80@...>?wrote ----?
?

Hi all.?

After one year (moved to a new house) I switched my CS-80 on and fortunately everything still works fine, but the FC-7 connected to it. The malfunction is: when I push the pedal forward ?it raises the volume /wha-wha regularly, but when I go back down to the “low “ position, the volume takes some seconds before fading. In other words, when used fot raising the volume it works, when lowering it, it is … delayed. Like a long release…?
Any clue?
Thanks

Fernando
?







(No subject)

 


Re: CS-80 + FC7

 

开云体育

the original CS80 volume pedal was a lightbulb and photocell with a teardrop? shaped dowser to limit light to the photo cell...

I have yet to try my FC7s on my 80 as I once had ground rail burn out with a faulty connector short on the expression jack.... there is voltage there to power a bulb...


---- On Mon, 22 Jan 2018 15:22:18 -0600 Fernando Zarone fernandozarone@... [yamahacs80] wrote ----

?

Hi all.?

After one year (moved to a new house) I switched my CS-80 on and fortunately everything still works fine, but the FC-7 connected to it. The malfunction is: when I push the pedal forward ?it raises the volume /wha-wha regularly, but when I go back down to the “low “ position, the volume takes some seconds before fading. In other words, when used fot raising the volume it works, when lowering it, it is … delayed. Like a long release…?
Any clue?
Thanks

Fernando
?





CS-80 + FC7

 

Hi all.?
After one year (moved to a new house) I switched my CS-80 on and fortunately everything still works fine, but the FC-7 connected to it. The malfunction is: when I push the pedal forward ?it raises the volume /wha-wha regularly, but when I go back down to the “low “ position, the volume takes some seconds before fading. In other words, when used fot raising the volume it works, when lowering it, it is … delayed. Like a long release…?
Any clue?
Thanks

Fernando
?


Re: YM26600/26700 IC Alternatives

 

With the power off, I am getting a 70 ohm resistance between +15V card rail and ground - does anyone know if this is this normal?


Re: YM26600/26700 IC Alternatives

 

So aside from Vss, Vdd, clock i/o's, etc, I count 33 connections to the 26600 operating at +8.5/-6.5V. Tons of level-shifting chips needed, indeed..


Re: CS-80 tech question: initial velocity problem on TSB board

 

I’m in southern New Jersey, about a half hour from Philadelphia.


Re: CS-80 tech question: initial velocity problem on TSB board

 

Were are you located Jonathan ??