Search found 22 matches

by rtype909
Sat Aug 20, 2016 9:12 pm
Forum: Yamaha SY99 Forum
Topic: SD9902 Analog Synths Disk
Replies: 0
Views: 907

SD9902 Analog Synths Disk

hi,
My genuine SD9902 Yamaha R&D Disk has become corrupted. Has anyone got an image of this? I think i may have a backup somewhere but i can't lay my hands on it at the moment.
by rtype909
Tue Jul 14, 2015 12:39 am
Forum: Yamaha SY99 Forum
Topic: Aftertouch repair
Replies: 19
Views: 3382

Re: Aftertouch repair

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.
by rtype909
Sun Jun 14, 2015 1:55 pm
Forum: Yamaha SY99 Forum
Topic: Aftertouch repair
Replies: 19
Views: 3382

Aftertouch repair

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/
by rtype909
Sat May 30, 2015 8:11 pm
Forum: Yamaha SY99 Forum
Topic: SY99 Capacitor list/ Cap Map
Replies: 25
Views: 5029

Re: SY99 Capacitor list/ Cap Map

I've done mine...had some spare OPA275 so they went in as well

Image
by rtype909
Sun May 24, 2015 12:56 pm
Forum: Yamaha SY99 Forum
Topic: SY99 Capacitor list/ Cap Map
Replies: 25
Views: 5029

Re: SY99 Capacitor list/ Cap Map

Yes i noticed there lots of bipolar 10uf around the opamps and two big 47uf bipolar near the 4556, which i assume is the headphone op amp. I wonder why this is so.
by rtype909
Sat Apr 25, 2015 11:15 pm
Forum: Yamaha SY99 Forum
Topic: SY99 files on the net
Replies: 14
Views: 3702

Re: SY99 files on the net

Miks,
did you track these down? I'm interested in the 'Noise Percussion' disk
by rtype909
Sat Apr 25, 2015 10:07 am
Forum: Yamaha SY99 Forum
Topic: SY99 Capacitor list/ Cap Map
Replies: 25
Views: 5029

Re: SY99 Capacitor list/ Cap Map

newer caps are so much smaller you can comfortably increase voltage ratings and it still fit. plus the yamaha has generous lead spacing. Its quite easy to unsolder with a 40w iron

I think the unbranded 10uf around the op amps should be first to go
by rtype909
Fri Apr 24, 2015 8:57 pm
Forum: Yamaha SY99 Forum
Topic: Favourite Preset Disks
Replies: 0
Views: 822

Favourite Preset Disks

Right now, my favourite disk is from Metra Sounds by Peter Gorges. Its mainly AFM presets and i prefer this to AWM presets, although i don't mind AFM+AWM. Peter Gorges did some great sounds for the D50 too.
by rtype909
Fri Apr 24, 2015 8:55 pm
Forum: Yamaha SY99 Forum
Topic: SY99 Capacitor list/ Cap Map
Replies: 25
Views: 5029

Re: SY99 Capacitor list/ Cap Map

Its also worth observing there are a real mix back of caps in the Sy99, in terms of brand and quality. Elna for the big caps, Nichicon's for the mid caps and then some no-name for most of the 10uf caps.
by rtype909
Fri Apr 24, 2015 8:54 pm
Forum: Yamaha SY99 Forum
Topic: Defective SY99 disk from eBay
Replies: 3
Views: 1495

Re: Defective SY99 disk from eBay

sorry don't have this one. But i'll keep looking across my disks to see if anything like BA.The.Saw etc comes up
by rtype909
Fri Apr 24, 2015 8:53 pm
Forum: Yamaha SY99 Forum
Topic: The GREAT adventure: Upgrading to version 1.5 SY99 OS
Replies: 6
Views: 3094

Re: The GREAT adventure: Upgrading to version 1.5 SY99 OS

hi miks, i have just finished reading the various threads on this and learning of your contribution too. Thanks for sending me to the downloads section. Have you any experience lifting the 84pin cpu and inserting the 80pin cpu? i presume this has to be programmed too or can you live with the 84pin c...
by rtype909
Fri Apr 24, 2015 6:49 pm
Forum: Yamaha SY99 Forum
Topic: SY99 Capacitor list/ Cap Map
Replies: 25
Views: 5029

Re: SY99 Capacitor list/ Cap Map

The service manual for the SY99 does not cover the regular caps only some of the larger ones eg. 220uf. No idea why, given the document is otherwise quite comprehensive.
by rtype909
Fri Apr 24, 2015 6:47 pm
Forum: Yamaha SY99 Forum
Topic: Defective SY99 disk from eBay
Replies: 3
Views: 1495

Re: Defective SY99 disk from eBay

I'll have a look.
by rtype909
Fri Apr 24, 2015 6:38 pm
Forum: Yamaha SY85 Forum - Covers the SY85 Keyboard and TG500 Module
Topic: Find Firmware H8/532 for OS 1.34
Replies: 20
Views: 5646

Re: Find Firmware H8/532 for OS 1.34

I also possesses a SY99 is Version 1.57. I can provide this service to other members if necessary.members if necessary.
Hi, is it possible for you to post the "BIN" files for 1.57. Also indicate what CPU is in 1.57 at IC128 and at IC108?
Mine is currently socketed 84pin H8/532
by rtype909
Fri Apr 24, 2015 6:34 pm
Forum: Yamaha SY99 Forum
Topic: The GREAT adventure: Upgrading to version 1.5 SY99 OS
Replies: 6
Views: 3094

Re: The GREAT adventure: Upgrading to version 1.5 SY99 OS

Hi,
Has anyone got "bin" files for the updated ROMS? the CPU seems off the shelf and whilst i know the v1.0 CPU is a Hitachi H8/532 could someone say, what the later 1.5 CPU is? Also the CHIP at IC108.

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