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Re: M Board problem - heat related.

 

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Hi

Am 08.07.22 um 10:19 schrieb pyjamagroove via groups.io:
The problems that it is almost Impossible to trace because when I take it out for inspection it cools down and sounds ok again (in tune! )._._,_._,_
I had once a similar issue (a thermal problem disappears when the card is take out and or the lid is open), so I soldered long wires? (about 60cm / 2ft long) to all points on the card I wanted to measure. The wires led to a gridstyle breadboard which could be placed on the keyboard, while the card is mounted and the lid is closed. So I could measure at least a few selected signals of this card on this breadboard while lid is closed.

regards
Florian
M Board problem - heat related.

 
Edited

Hi guys,
So one of my M Boards (°4 on CH I) goes silent after a warm up. I have established that the tuning goes down to the point that it's not auditable. The problems that it is almost Impossible to trace because when I take it out for inspection it cools down and sounds ok again (in tune! ).
Here is what I did so far:
1. Cleaned VCO's legs and applied fresh heat conducting agent between the IC and the diode.
2. I have bought that I have the same issue as MFox (described here ?so I have changed the IC3. Did not work...

As I sad the problem is diagnostics. Did anyone have a similar problem?
Re: Cs80 parts

 

Michael:

Other than the guy in California you mentioned, I don't know of anyone with parts like that. Most everything I know of are boards and chips.

The later model CP-30 pianos had the same key switches if you can find someone with one of those of the right vintage?parted out. On the other hand, with careful work, the one you have there could likely be bent back to a usable shape.

I'll keep my eyes out for a lid.

Scott

On Mon, May 16, 2022 at 10:54 AM Michael Carr <Iammichaelcarr@...> wrote:
Hey guys,

Just wondering if anyone has a husked cs80. I’m looking for two parts.

Specifically the glove box door that covers the “memories” faderbank, and one leaf key contact.

Both are pictures below.

Thanks in advance!
Michael

?
Cs80 parts

 

Hey guys,

Just wondering if anyone has a husked cs80. I’m looking for two parts.

Specifically the glove box door that covers the “memories” faderbank, and one leaf key contact.

Both are pictures below.

Thanks in advance!
Michael

?
Re: Tech recommendations in or around Los Angeles

 

Paul Morte Technical Services in Orange, CA does good work on CS-80's.

On Thu, Mar 17, 2022 at 2:26 PM T.M. Bois via <bucklehorse=yahoo.com@groups.io> wrote:
Hi folks,

I’ll finally be moving my CS80 down the coast to my new home in LA in a couple of months, and I’ve been thinking of giving it a long overdue ‘spa treatment’—replacing decaying caps/CMOS chips and hopefully eliminating a few minor aftertouch gremlins in the process.

Does anyone know who the trustworthy/non-CS80phobic technicians are in this part of the world?

Thanks in advance. ?
Re: CS80 Tuning Problems

 

开云体育

Ok thanks for the input. I can certainly deal with that.?

On Mar 17, 2022, at 1:20 PM, T.M. Bois via groups.io <bucklehorse@...> wrote:

?
As long as we’re talking just a few cents off in either direction, I always understood this was standard behaviour, and why it’s suggested that you let the synth warm up to a stable operating temp before tuning it—a rule that applied in ‘76 as much as it applies today. I’ve got the older tuning pots on mine and the tuning definitely drifts a bit as it warms up/cools down.?

Given all of the calamitous problems that can arise in a CS80 following a service, I’d say you’re in pretty good shape if this is the worst of them. ;)

On Mar 17, 2022, at 11:09 AM, Alexander488 <alexander488@...> wrote:

?
Hi Scott, I don’t know. I can ask the technician, he would likely know since he said he had to wait for it to warm up before he could calibrate that voice.?

On Mar 17, 2022, at 1:04 PM, Scott Rodriguez <synthrodriguez@...> wrote:

?
My expectation is that the chip has become defective. There's not much else that would do that and stabilize after 15 or 20 minutes as you describe.

How far out is it when it's cold before it warms up? A few cents? A half-step?.

On Thu, Mar 17, 2022 at 1:53 PM Alexander488 <alexander488@...> wrote:
Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex

Tech recommendations in or around Los Angeles

 

Hi folks,

I’ll finally be moving my CS80 down the coast to my new home in LA in a couple of months, and I’ve been thinking of giving it a long overdue ‘spa treatment’—replacing decaying caps/CMOS chips and hopefully eliminating a few minor aftertouch gremlins in the process.

Does anyone know who the trustworthy/non-CS80phobic technicians are in this part of the world?

Thanks in advance. ?
Re: CS80 Tuning Problems

 

开云体育

As long as we’re talking just a few cents off in either direction, I always understood this was standard behaviour, and why it’s suggested that you let the synth warm up to a stable operating temp before tuning it—a rule that applied in ‘76 as much as it applies today. I’ve got the older tuning pots on mine and the tuning definitely drifts a bit as it warms up/cools down.?

Given all of the calamitous problems that can arise in a CS80 following a service, I’d say you’re in pretty good shape if this is the worst of them. ;)

On Mar 17, 2022, at 11:09 AM, Alexander488 <alexander488@...> wrote:

?
Hi Scott, I don’t know. I can ask the technician, he would likely know since he said he had to wait for it to warm up before he could calibrate that voice.?

On Mar 17, 2022, at 1:04 PM, Scott Rodriguez <synthrodriguez@...> wrote:

?
My expectation is that the chip has become defective. There's not much else that would do that and stabilize after 15 or 20 minutes as you describe.

How far out is it when it's cold before it warms up? A few cents? A half-step?.

On Thu, Mar 17, 2022 at 1:53 PM Alexander488 <alexander488@...> wrote:
Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex

Re: CS80 Tuning Problems

 

开云体育

Do you think it ok to keep using the keyboard for the time being, or am I risking doing damage to other parts of the CS??

On Mar 17, 2022, at 1:09 PM, Alexander488 <alexander488@...> wrote:

?
Hi Scott, I don’t know. I can ask the technician, he would likely know since he said he had to wait for it to warm up before he could calibrate that voice.?

On Mar 17, 2022, at 1:04 PM, Scott Rodriguez <synthrodriguez@...> wrote:

?
My expectation is that the chip has become defective. There's not much else that would do that and stabilize after 15 or 20 minutes as you describe.

How far out is it when it's cold before it warms up? A few cents? A half-step?.

On Thu, Mar 17, 2022 at 1:53 PM Alexander488 <alexander488@...> wrote:
Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex

Re: CS80 Tuning Problems

 

开云体育

Hi Scott, I don’t know. I can ask the technician, he would likely know since he said he had to wait for it to warm up before he could calibrate that voice.?

On Mar 17, 2022, at 1:04 PM, Scott Rodriguez <synthrodriguez@...> wrote:

?
My expectation is that the chip has become defective. There's not much else that would do that and stabilize after 15 or 20 minutes as you describe.

How far out is it when it's cold before it warms up? A few cents? A half-step?.

On Thu, Mar 17, 2022 at 1:53 PM Alexander488 <alexander488@...> wrote:
Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex

Re: CS80 Tuning Problems

 

My expectation is that the chip has become defective. There's not much else that would do that and stabilize after 15 or 20 minutes as you describe.

How far out is it when it's cold before it warms up? A few cents? A half-step?.


On Thu, Mar 17, 2022 at 1:53 PM Alexander488 <alexander488@...> wrote:
Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex

Re: CS80 Tuning Problems

 

Hello everyone, I have a CS80 that recently developed ?a tuning problem with one voice. The repair shop that worked on it a few years ago thought it might be a calibration issue. I just got it back from the shop and the one voice is still not in tune when I first power up, but about 15 or 20 after the CS has warmed up, it stabilizes and is in tune. Since I never had this problem before I am thinking there is still something that needs to be fixed or replaced.?

Just wondering what insights any of you might have regarding this problem?

Thanks in advance for your help!

Best regards,

Alex
Re: Yamaha CS-80 dimension

 

开云体育

Thank you all,?
this is a great list...

Il giorno 27 feb 2022, alle ore 23:48, wavecomputer360 <wavecomputer360@...> ha scritto:

I have the lid stowed away but it has roughly the same dimensions?as the tolex-covered bottom part of the instrument.
?
Stephen
?
Gesendet:?Sonntag, 27. Februar 2022 um 14:26 Uhr
Von:?"Fernando Zarone via " <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?Re: [yamahaCS80fans] Yamaha CS-80 dimension
Thx Stephen, but I need also to know the dimension of the box with the lid… ?
?
Inviato da iPhone 13 plus
?
Il giorno 27 feb 2022, alle ore 13:45, wavecomputer360 <wavecomputer360@...> ha scritto:
?
?
Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via " <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Re: Yamaha CS-80 dimension

 

I have the lid stowed away but it has roughly the same dimensions?as the tolex-covered bottom part of the instrument.
?
Stephen
?
Gesendet:?Sonntag, 27. Februar 2022 um 14:26 Uhr
Von:?"Fernando Zarone via groups.io" <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?Re: [yamahaCS80fans] Yamaha CS-80 dimension
Thx Stephen, but I need also to know the dimension of the box with the lid… ?
?
Inviato da iPhone 13 plus
?

Il giorno 27 feb 2022, alle ore 13:45, wavecomputer360 <wavecomputer360@...> ha scritto:
?
?
Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via groups.io" <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Re: Yamaha CS-80 dimension

 

And as far as I remember total weight with lid is a little more than 100kgs...



On Sun, 27 Feb 2022 at 15:33, Scott Rodriguez <synthrodriguez@...> wrote:
The 295 mm dimension is the height with the lid in place.

On Sun, Feb 27, 2022 at 8:26 AM Fernando Zarone via <fernandozarone=mac.com@groups.io> wrote:
Thx Stephen, but I need also to know the dimension of the box with the lid… ?

Inviato da iPhone 13 plus

Il giorno 27 feb 2022, alle ore 13:45, wavecomputer360 <wavecomputer360@...> ha scritto:

?
Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via " <fernandozarone=mac.com@groups.io>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Re: Yamaha CS-80 dimension

 

The 295 mm dimension is the height with the lid in place.


On Sun, Feb 27, 2022 at 8:26 AM Fernando Zarone via <fernandozarone=mac.com@groups.io> wrote:
Thx Stephen, but I need also to know the dimension of the box with the lid… ?

Inviato da iPhone 13 plus

Il giorno 27 feb 2022, alle ore 13:45, wavecomputer360 <wavecomputer360@...> ha scritto:

?
Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via " <fernandozarone=mac.com@groups.io>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Re: Yamaha CS-80 dimension

 

开云体育

Thx Stephen, but I need also to know the dimension of the box with the lid… ?

Inviato da iPhone 13 plus

Il giorno 27 feb 2022, alle ore 13:45, wavecomputer360 <wavecomputer360@...> ha scritto:

?
Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via groups.io" <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Re: Yamaha CS-80 dimension

 

Add another 13 to 15 kilograms to the weight without the lid and you should be covered (the lid is heavy as hell but so is the rest of this thing).
?
Stephen
?
?
Gesendet:?Sonntag, 27. Februar 2022 um 10:44 Uhr
Von:?"Fernando Zarone via groups.io" <fernandozarone@...>
An:?yamahaCS80fans@groups.io
Betreff:?[yamahaCS80fans] Yamaha CS-80 dimension
Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando




?
Yamaha CS-80 dimension

 

Title says it all…
I have the following ones. mm 1.206 x 681 x 295, weight 82 kg.
Are these the measures WITH or WITHOUT the original lid? I needed the ones WITH the lid...
Thanks

Fernando
Re: YAMAHA CS-80 ultimate upgrade ?

 

Details have been added to the video description today.

Regards,
Phil



On Tue, 22 Feb 2022 at 23:34, <phaseshifter11@...> wrote:
How can I find out some more about this?

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