Yamaha SY85 No Sounds and Broken Floppy Drive

The Yamaha SY85 is a digital music workstation introduced in 1992. Unlike other Yamaha synthesizers of the time (SY77 and the SY99) the SY85 does not use FM synthesis. Instead, its sounds are based on samples, which can be layered and modified to create new sounds.

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HiLa
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Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by HiLa » Sat Jan 12, 2019 9:58 am

Hi Saul, can you help me?
I have yamaha sy85 and unfortunately all the sounds were cancelled. The floppy reader doesn't work. I've installed midi ox and try to transfer files .sys but the yamaha sy85 can't receive.
I've seen the you post some download zip files .G01. How can I transfer this type of file to my yamaha?
Thank you for your help
Hilary
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by Saul » Sat Jan 12, 2019 12:57 pm

Hi Hilary and welcome to yamahamusicians.com :)

Do you know how all the sounds were wiped from the keyboard? I would assume someone performed a factory reset but didn't realise this wipes all the internal sounds. Of course if the floppy drive didn't work there would have been no way to restore the factory sounds.

Technically it is possible to transfer sounds over midi via Sysex but that is problematic for several reasons the first of which is modern computers are too fast for the SY85 and will send the data too quickly for the keyboard to process. You would also of course need a good quality midi interface. That would help buffer the data but it is still not a 100% reliable solution. It also takes ages!

The best way forward is to repair or replace that floppy drive. It is not a particularly difficult process it just entails removing a lot of screws but it is easily done if you take your time and make sure everything is laid out properly such as a soft area to rest the keyboard on...a blanket will do, bowls for the screws so you don't lose any and take a few photos along the way so you can remember where things go.

The main cause of the floppy drive failing is the belt deteriorates over time. These are cheap to replace and normally that sorts things out. You can also replace the drive itself although they are not particularly cheap. You can't just put any old drive in there as Yamaha used their own proprietary connections. You can purchase adapters to allow the use of other drives but you need to make sure you get the right one.

You can also purchase a USB adapter which goes in place of the floppy drive. Again you need the right one as there are many out there, some claiming to be compatible and are not or are of particularly bad design.

I have never replaced the drive, only the drive belt but had I kept the SY85 longer I probably would have gone for a newer direct drive type floppy drive (no belt needed) or a usb adapter.

I am sure we can get you up and running though :)
Saul
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parametric
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by parametric » Sat Jan 12, 2019 6:04 pm

Good advice from Saul there, Hilary.

Given the age of the SY85 now, there is a high chance that the internal battery has died -

and this was actually how your sounds disappeared. . . .

The original battery is a "CR2032 with legs" - soldered directly to the PCB.

These can be purchased and it's relatively simple to replace, but many prefer to fit a

CR2032 socket, so that the basic CR2032 coin cell can be replaced without soldering . . .

If you have an old PC motherboard lying around, the socket can be removed from that and used in the SY

The original floppy drive is of good quality and mostly responds well to a CLEAN, and fitting a new rubber belt.

There are many earlier threads in the SY85 section that describe BOTH these procedures,

including links to where the correct belt can be purchased.

I can confirm that this is so, as I repaired my own SY85 Drive AND replaced the battery successfully . . . .

ATB

parametric
Alesis Fusion 8SSD AND 6SSD - BOTH are 384Mb/120Gb SSD/Akai ADVANCE61/Yamaha MOXF6/1024Mb Flash Ram/Yamaha SY85/8.5mb vol/1024k non-vol/DX21/Roland MT32/Bachmann double overstrung Baby Grand Piano/Win10 Pro/Ubuntu MATE 15.0.4/iBook G4/Mac OS 10.4.6/ProTools 7.4/MBox2/M-Audio MicroTrack 24/96

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Sector101 2x SYEMB06 / 4 x EXM-E3 128MB DRAM Module

BRAND NEW DSDD (720k) FLOPPY DISKS FOR SALE - http://www.yamahaforums.co.uk/forum/vie ... =22&t=9217

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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by Rara » Sun Jan 13, 2019 7:44 am

One thing to keep in mind with replacing the coin cell battery for the socketed PC type,
the pin spacing in Yamaha motherboards is not the same as the PC type.
The spacing is quite a bit narrower (IIRC). requires a bit of wire to make up the difference and a glue gun
to hold the other side of the battery holder down which would normally be held by a solder joint.
This conversion is simple in other gear, such as Korg and Roland as they use the same spacing as PC battery holders.
Not so with Yamaha...... :roll:

Rara 0-)
Yamaha: SY35, SY85 (8.5mb), TX7, PSR 4600 - Roland: Juno106, MC307, MKB200, SE70
Kawai: XD5, Korg: Poly800Mk2 (moog slayer mod)
Casio: MA-201 E-MU: - ESI-2000 (128mb)
Digitech studio 400 - Tascam Porta 5 HS, MM1, - Studiomaster: Fusion
SX Bass (modded chinese fender P knock off - fat wires, Jap caps,pots, Dimarzio DP250, Ernie Ball strings)
Gliga 1

To be resurrected: SY77,FZ1,CZ1000,CZ5000, MKB200
Retired: Dr550mk2,SR-16,D110
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by shadowmask » Sun Jan 13, 2019 11:13 am

The onboard battery in my SY85 (and TG500) was the bigger CR2450 type. I think they went for that one as it is used as the backup power for the SYEMB06 modules as well as the onboard memory.

Brian
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by Rara » Sun Jan 13, 2019 11:27 am

shadowmask wrote:
Sun Jan 13, 2019 11:13 am
The onboard battery in my SY85 (and TG500) was the bigger CR2450 type. I think they went for that one as it is used as the backup power for the SYEMB06 modules as well as the onboard memory.

Brian
yes your right, i forgot the battery was bigger in the sy85.

Rara 0-)
Yamaha: SY35, SY85 (8.5mb), TX7, PSR 4600 - Roland: Juno106, MC307, MKB200, SE70
Kawai: XD5, Korg: Poly800Mk2 (moog slayer mod)
Casio: MA-201 E-MU: - ESI-2000 (128mb)
Digitech studio 400 - Tascam Porta 5 HS, MM1, - Studiomaster: Fusion
SX Bass (modded chinese fender P knock off - fat wires, Jap caps,pots, Dimarzio DP250, Ernie Ball strings)
Gliga 1

To be resurrected: SY77,FZ1,CZ1000,CZ5000, MKB200
Retired: Dr550mk2,SR-16,D110
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by Miks » Sun Jan 13, 2019 2:24 pm

Maybe this little gem could be of help:

oshpark.com/shared_projects/xdfK07Ms
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), WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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Re: Yamaha SY85 No Sounds and Broken Floppy Drive

Unread post by parametric » Mon Jan 14, 2019 12:34 am

Rara wrote:
Sun Jan 13, 2019 11:27 am
shadowmask wrote:
Sun Jan 13, 2019 11:13 am
The onboard battery in my SY85 (and TG500) was the bigger CR2450 type. I think they went for that one as it is used as the backup power for the SYEMB06 modules as well as the onboard memory.

Brian
yes your right, i forgot the battery was bigger in the sy85.

Rara 0-)
OOps, sorry guys - I've not been inside the SY for a long time - I stand corrected . . . :oops:

para
Alesis Fusion 8SSD AND 6SSD - BOTH are 384Mb/120Gb SSD/Akai ADVANCE61/Yamaha MOXF6/1024Mb Flash Ram/Yamaha SY85/8.5mb vol/1024k non-vol/DX21/Roland MT32/Bachmann double overstrung Baby Grand Piano/Win10 Pro/Ubuntu MATE 15.0.4/iBook G4/Mac OS 10.4.6/ProTools 7.4/MBox2/M-Audio MicroTrack 24/96

NI Komplete11 Ultimate

Sector101 2x SYEMB06 / 4 x EXM-E3 128MB DRAM Module

BRAND NEW DSDD (720k) FLOPPY DISKS FOR SALE - http://www.yamahaforums.co.uk/forum/vie ... =22&t=9217

Watch out now! take care, BEWARE of the greedy leaders! They'll take you where you should not go - (George Harrison)

IT'S TRUE - "MONEY TALKS" - TO ME, IT MOSTLY SAYS "GOODBYE" ;-)
http://www.chrisnmiller.co.uk/Chris
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