Replace/repair SY99 buttons

The Yamaha SY99 is a synthesiser combining frequency modulation synthesis (branded as Advanced FM) and sample-based synthesis (branded as Advanced Wave Memory 2) and the direct successor to Yamaha's SY77/TG77

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JK1974
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Replace/repair SY99 buttons

Unread post by JK1974 » Thu Oct 18, 2012 10:06 pm

Hi,

after not having used my SY99 for a long time, I recently turned it on again and realized that some buttons have to be pressed quite hard to make them get contact. While I have found a lot of threads about replacing the keys of the keyboard, I haven´t found information (neither text, nor photos, nor videos) about repairing or replacing the buttons yet.
Did anyone already take a closer look at this? Or is it - in the worst case - simply replacing micro switches like the ones offered e.g. at http://www.syntaur.com/3130.html or any other electronic store?

Thank you very much in advance!
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Re: Replace/repair SY99 buttons

Unread post by Saul » Thu Oct 18, 2012 10:55 pm

I would hazard a guess that the contacts under the switches have probably oxidized an so the resistance is much higher than it should be. Hence why they need a firm press to get them to work. A touch of switch cleaner should sort them out. At least that is what I would use but perhaps someone who has actually cleaned an SY99 up might be able to offer more definitive advise?
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Re: Replace/repair SY99 buttons

Unread post by Miks » Fri Oct 19, 2012 7:22 am

Yes, about 2 years ago I replaced ALL the tactile switches at my DX7IID, my Korg M1, my Roland D50 and... my SY99 !!! :mrgreen:
It's a bit difficult to do since you have to dig deep into your synth to reach the pcb's carrying the switches. The switches themselves are quite a bargain, for mine I payed 0,10 to 0,20 Euro each. I'm at work at the moment, but if you wish I will take a look which type of switch fits in the SY when back home.
Try to find someone with a vacuum desolder pump to get the swiches out. Using solder wick will work too, but it's a lot more difficult to remove the solder... I used my beloved Weller VP 801 EC :D
It's worth a try 'cuz since I replaced the switches my synths act 'as new' :mrgreen:

regards,

Miks
My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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Re: Replace/repair SY99 buttons

Unread post by JK1974 » Fri Oct 19, 2012 9:21 am

Thanks a lot for you rhelp. I would indeed be interested in the type of switches if you still find the information. Are there so many different types of micro switches or is it just the size of the switches that makes the difference?

I imagine that it is going to be a lot of work, however, I would just replace the main navigation buttons, not A-D, 1-16 and Internal-Preset2 as they still seem to work. I think, it might be similar to the replacement of the LCD, that´s why I would take a closer look at available threads, documents, videos etc. on how to disassemble the whole SY99.
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Re: Replace/repair SY99 buttons

Unread post by Miks » Fri Oct 19, 2012 10:29 am

If you once opened up your synth I suggest to replace ALL switches... try to figure out you've replace a few and a few weeks later another one (ore more) fails... and it's not one of the replaced switches... 8O
And then you've to dismantle the SY again... 8O 8O 8O

The size of the (switch-) body is almost identical but the most important thing is the length of the actuator. By replacing the switches at my synths I had to buy 3 different types due to 3 different actuator length. But I've written down what switches I used and will tell you as soon as I'm home again.

best,

Miks
My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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ilmenator
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Re: Replace/repair SY99 buttons

Unread post by ilmenator » Fri Mar 01, 2013 8:41 pm

It's about time to finally get home, Miks! I need to order some :-)
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Miks
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Re: Replace/repair SY99 buttons

Unread post by Miks » Fri Mar 01, 2013 9:05 pm

OOOPPPPSSSS... I overslept the time... 8O I'm so sorry... :oops:

You've been PM'd... :D
My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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thartdyke
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Re: Replace/repair SY99 buttons

Unread post by thartdyke » Fri Oct 18, 2019 2:47 pm

Miks wrote:
Fri Mar 01, 2013 9:05 pm
You've been PM'd... :D
I have acquired an SY99 that could do with a refresh. I'd love to know which buttons worked for you if you still have the info around...

Toby
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Miks
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Re: Replace/repair SY99 buttons

Unread post by Miks » Fri Oct 18, 2019 3:39 pm

Hi Toby,

this is the tactile switch you need:

SY 99 Push-Switch 1-70: VF946200

SOA-111HS

The attached pdf file shows how to determine the exact type of switch needed:
Push-Switch SOA-111HS.pdf
(64.59 KiB) Downloaded 19 times

This is the replacement I've used on my SY99:

reichelt.de/short-stroke-key-6x6-mm-height-4-3-mm-12-v-vertical-taster-3301-p27892.html?GROUPID=7587&START=0&OFFSET=100&SID=93XamK46wQAT0AAGoEpw8d759a339737aec87e8f2140771adda9a&LANGUAGE=EN&&r=1

Hope it helps... 8)
My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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thartdyke
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Joined: Sat Oct 05, 2019 11:31 pm

Re: Replace/repair SY99 buttons

Unread post by thartdyke » Sun Oct 20, 2019 4:05 pm

Miks wrote:
Fri Oct 18, 2019 3:39 pm
Hope it helps... 8)
It sure does - thanks!
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Miks
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Re: Replace/repair SY99 buttons

Unread post by Miks » Sun Oct 20, 2019 4:25 pm

You're welcome! :D
My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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