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Aftertouch repair

Posted: Sun Jun 14, 2015 1:55 pm
by rtype909
hi,

i've fixed my aftertouch and here is a blog to guide anyone who wishes to try the same:

http://obsoletemachines.com/2015/06/14/ ... ch-repair/

Re: Aftertouch repair

Posted: Sun Jun 14, 2015 3:51 pm
by Derek
Thanks for sharing! :)

Re: Aftertouch repair

Posted: Sun Jun 21, 2015 6:06 pm
by Clyde
Thank you for that!

Re: Aftertouch repair

Posted: Wed Jun 24, 2015 3:28 am
by scottrod
Nice repair technique, very good solution.

Scott

Re: Aftertouch repair

Posted: Tue Jul 14, 2015 12:39 am
by rtype909
hi,
thanks
will tidy up and take up the offer to covert it to pdf.

The fci seems to take two stabs (two pointy teeth) at getting a purchase on the strip and maybe a small stapler could be used to jump bad traces where the strip has been folded over.

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 10:57 am
by Hagai
Hello,
It seems like the blog is no longer active.
rtype909, can you please share this aftertouch fix again?
Many thanks

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 11:08 am
by Monte
Hagai wrote:
Wed Nov 08, 2017 10:57 am
Hello,
It seems like the blog is no longer active.
rtype909, can you please share this aftertouch fix again?
Many thanks
Hi Hagai,
Luckily we have snapshots!

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 1:24 pm
by Miks
I just made a pdf file of it - here you go... :D
Yamaha SY99 Aftertouch repair.pdf
(1005.54 KiB) Downloaded 137 times

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 2:21 pm
by Saul
Thanks Miks. I have been in touch with Raj who created the original article and he said I could reproduce it for the front of the site so will do that and also link to the pdf here. He also said he plans to bring his site back online as he has a lot more articles to add.

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 5:13 pm
by Hagai
Thank you so much, everyone!
I recently got a used SY99, and its aftertouch lacks sensitivity.
In the Test program, it only goes up to 20 upon pressure.
This article is very informative, i may be able to fix my unit. It may take a while until i dive in and open it (under a lot of pressure at work currently... my boss presses way beyond 20 hehe) but i plan on doing it sometime soon, and i'll share my experience here.
Thanks again!

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 6:15 pm
by Miks
BTW: if you once have your synth open its recommended to take a closer look onto the keybed's pcb to see if one or more of the key contact(s) have wiggled loose - in this picture (taken from the above Aftertouch Repair) this seems to be the case - please see the red circles I've placed within the pic. Those contacts are in need of a splash of fresh solder - once its done you're good to go :D
Contacts.jpg

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 6:20 pm
by Saul
Article is on the front of the site at https://yamahamusicians.com and links back here. Should be easier for everyone to find it now :)

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 7:17 pm
by Hagai
Miks wrote:
Wed Nov 08, 2017 6:15 pm
BTW: if you once have your synth open its recommended to take a closer look onto the keybed's pcb to see if one or more of the key contact(s) have wiggled loose - in this picture (taken from the above Aftertouch Repair) this seems to be the case - please see the red circles I've placed within the pic. Those contacts are in need of a splash of fresh solder - once its done you're good to go :D
Contacts.jpg
Hi Miks,
If i understand correctly, this issue is not directly related to the aftertouch, but those poor contacts may cause the keys to be non-responsive at all. Am i correct?

Re: Aftertouch repair

Posted: Wed Nov 08, 2017 8:16 pm
by Miks
Hagai wrote:
Wed Nov 08, 2017 7:17 pm
Hi Miks,
If i understand correctly, this issue is not directly related to the aftertouch, but those poor contacts may cause the keys to be non-responsive at all. Am i correct?
Yes mate, that's absolutely correct!

Re: Aftertouch repair

Posted: Thu Nov 09, 2017 12:02 pm
by Monte
This has been weird. why are there any poor contacts/solder joints in the first place?