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CS-80 key contact blade springs

CS-80 key contact blade springs

2012-03-02 by lt_picard_voyager

Hi,

I have some bended key contacts in my CS-80.
I could try to bend the springs back in the original shape. It will be difficult because it is very tiny and has to be done with surgeon precision and I do not want to do it anymore harm. Before I do that I would like to know if somebody has a spare PCB `Yamaha LC 21 571 JCI-AK H' completely with the springs on it, so I can use it as an easy drop in replacement?
You can find pictures of the print I am searching on my flickr account : http://www.flickr.com/photos/41267611@N06/sets/72157629112502438/
Anybody has other tips or advice on tools or techniques to adjust the springs back in original shape?

Already I purchased a 2nd hand Yamaha CP-30 piano. This piano has the same keyboard in it. But the prints with the key contact springs are not identical as in the CS-80. Although the black plastic key spring holders and the contact springs it selves are the same.

This week I phoned with Kent Spong. Kent told me he tried once do use contact springs from a Yamaha CP-20. He desoldered the springs. But the springs are clicked in the black plastic holder and not removable. Removing the springs from the holder would be destructive. So I do not suspect that will be a success to try.

Any advice, I would be grateful,

Greetings,

Lt

Re: [yamahacs80] CS-80 key contact blade springs

2012-03-02 by jkjelec@comcast.net

I've had good luck bending CS80 keyboard contacts back into shape, even when they were as bent-up as the ones you showed.  They must be made of good quality spring steel.  I just held one end  in place using needle-nose pliers. and then bent the other end by hand.  I had to overbend them a little, and then they would end up approximately back where they belong.  Of course there's always a chance one could break while being bent. 


jkjelec
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----- Original Message -----


From: "lt_picard_voyager" <blueridge@...> 
To: yamahacs80@yahoogroups.com 
Sent: Friday, March 2, 2012 3:52:37 AM 
Subject: [yamahacs80] CS-80 key contact blade springs 

Hi, 

I have some bended key contacts in my CS-80. 
I could try to bend the springs back in the original shape. It will be difficult because it is very tiny and has to be done with surgeon precision and I do not want to do it anymore harm. Before I do that I would like to know if somebody has a spare PCB `Yamaha LC 21 571 JCI-AK H' completely with the springs on it, so I can use it as an easy drop in replacement? 
You can find pictures of the print I am searching on my flickr account : http://www.flickr.com/photos/41267611@N06/sets/72157629112502438/ 
Anybody has other tips or advice on tools or techniques to adjust the springs back in original shape? 

Already I purchased a 2nd hand Yamaha CP-30 piano. This piano has the same keyboard in it. But the prints with the key contact springs are not identical as in the CS-80. Although the black plastic key spring holders and the contact springs it selves are the same. 

This week I phoned with Kent Spong. Kent told me he tried once do use contact springs from a Yamaha CP-20. He desoldered the springs. But the springs are clicked in the black plastic holder and not removable. Removing the springs from the holder would be destructive. So I do not suspect that will be a success to try. 

Any advice, I would be grateful, 

Greetings, 

Lt 



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Re: [POSSIBLE SPAM] Re: [yamahacs80] CS-80 key contact blade springs

2012-03-02 by Laurie Curry

Just remember... they do snap with manipulation and time.... I had to solder one of the hook end springs back together ...
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-----Original Message-----
From: jkjelec@...
To: yamahacs80@yahoogroups.com
Date: 03/02/2012 08:25
Subject: [POSSIBLE SPAM] Re: [yamahacs80] CS-80 key contact blade springs

       


I've had good luck bending CS80 keyboard contacts back into shape, even when they were as bent-up as the ones you showed. They must be made of good quality spring steel. I just held one end in place using needle-nose pliers. and then bent the other end by hand. I had to overbend them a little, and then they would end up approximately back where they belong. Of course there's always a chance one could break while being bent.

jkjelec

----- Original Message -----

From: "lt_picard_voyager" <blueridge@...>
To: yamahacs80@yahoogroups.com
Sent: Friday, March 2, 2012 3:52:37 AM
Subject: [yamahacs80] CS-80 key contact blade springs

Hi,

I have some bended key contacts in my CS-80.
I could try to bend the springs back in the original shape. It will be difficult because it is very tiny and has to be done with surgeon precision and I do not want to do it anymore harm. Before I do that I would like to know if somebody has a spare PCB `Yamaha LC 21 571 JCI-AK H' completely with the springs on it, so I can use it as an easy drop in replacement?
You can find pictures of the print I am searching on my flickr account : http://www.flickr.com/photos/41267611@N06/sets/72157629112502438/
Anybody has other tips or advice on tools or techniques to adjust the springs back in original shape?

Already I purchased a 2nd hand Yamaha CP-30 piano. This piano has the same keyboard in it. But the prints with the key contact springs are not identical as in the CS-80. Although the black plastic key spring holders and the contact springs it selves are the same.

This week I phoned with Kent Spong. Kent told me he tried once do use contact springs from a Yamaha CP-20. He desoldered the springs. But the springs are clicked in the black plastic holder and not removable. Removing the springs from the holder would be destructive. So I do not suspect that will be a success to try.

Any advice, I would be grateful,

Greetings,

Lt

------------------------------------

Yahoo! Groups Links

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[Non-text portions of this message have been removed]

Re: CS-80 key contact blade springs

2012-03-07 by lt_picard_voyager

Hi,

Thank you for the advice.

I succeeded in bending them back. I used two needles.
I bended the end of the needles 90� degrees with a plier.
Manipulating the bended needles as a tool I was able to bend them back.

Greetings,

Lt

Re: [yamahacs80] Re: CS-80 key contact blade springs

2012-03-08 by Tommy Priakos

Dear L_P_V,
Any chance you took pictures?
After you bent them with the pliers, I assume you used the pliers to grip the needles?

Thanks, 
TP

On Mar 7, 2012, at 2:31 PM, "lt_picard_voyager" <blueridge@...> wrote:

> 
> 
> Hi,
> 
> Thank you for the advice.
> 
> I succeeded in bending them back. I used two needles.
> I bended the end of the needles 90° degrees with a plier.
> Manipulating the bended needles as a tool I was able to bend them back.
> 
> Greetings,
> 
> Lt
> 
> 

[Non-text portions of this message have been removed]

Re: CS-80 key contact blade springs

2012-03-08 by Quazimodo

The question is, why did they bend in the first place...? Is this common...?

Cheers,
TOM



--- In yamahacs80@yahoogroups.com, Tommy Priakos <tpriakos@...> wrote:
Show quoted textHide quoted text
>
> Dear L_P_V,
> Any chance you took pictures?
> After you bent them with the pliers, I assume you used the pliers to grip the needles?
> 
> Thanks, 
> TP
> 
> On Mar 7, 2012, at 2:31 PM, "lt_picard_voyager" <blueridge@...> wrote:
> 
> > 
> > 
> > Hi,
> > 
> > Thank you for the advice.
> > 
> > I succeeded in bending them back. I used two needles.
> > I bended the end of the needles 90° degrees with a plier.
> > Manipulating the bended needles as a tool I was able to bend them back.
> > 
> > Greetings,
> > 
> > Lt
> > 
> > 
> 
> [Non-text portions of this message have been removed]
>