Search found 800 matches

by Rasputin
Sun Apr 18, 2021 5:44 pm
Forum: General Synthesizers
Topic: Yamaha RX11 Repair Thread
Replies: 17
Views: 13843

Re: Yamaha RX11 Repair Thread

NoordSynth wrote:
Fri Apr 16, 2021 12:20 pm
I saw that a lot of yamaha CR2032 are 210 mAh, mine is 235 mah... that? Can I check if a chip is getting power from the battery?
The 235 versus 210 doesn't matter. Use a voltimeter to check that the battery is outputting proper voltage. Triple check your battery polarity.
by Rasputin
Sun Apr 18, 2021 5:38 pm
Forum: Samplers
Topic: Akai S612 Sound Library Archive Project.
Replies: 19
Views: 23572

Re: Akai S612 Sound Library Archive Project.

bit99 wrote:
Tue Apr 13, 2021 6:15 pm
Anyone still interested in archiving the Akai s612 sound library from quick disks?
Yes, please. Any and all that you're willing to post.
by Rasputin
Sat Mar 20, 2021 10:42 pm
Forum: HELP!
Topic: Ensoniq VFX SD mainboard troubleshooting
Replies: 106
Views: 44588

Re: Ensoniq VFX SD mainboard troubleshooting

Sorry 4 years later asking a question about the Ensoniq VFX SD mainboard. My problem is in the DAC TDA 1541A. You have a VFX SD with a TDA 1541? Are you sure it's not really an SD-1? As far as I remember, the SD-1 does not supply unregulated voltage directly to the 7915 to derive the -15V rail, but...
by Rasputin
Tue Dec 29, 2020 10:32 am
Forum: Samplers
Topic: Akai MPC60: Upgrade or Replace?
Replies: 4
Views: 2957

Re: Akai MPC60: Upgrade or Replace?

Other than using floppies, the MPC60 does most of what I need. What aspect of using floppies bothers you? I am asking because a floppy emulator will not help you that much, other than eliminate the need for a physical diskette. Assuming you upgrade to a floppy emulator, the capacity of each disk wi...
by Rasputin
Sat Dec 26, 2020 12:21 am
Forum: General Synthesizers
Topic: Replacing a floppy in an EPS rackmount
Replies: 7
Views: 3349

Re: Replacing a floppy in an EPS rackmount

I have heard on these boards to get a GoTek floppy emulator. I was wondering how one transfers the instrument and song files from old floppies onto the GoTek. I got an external floppy drive today because I was hoping to recover some song files from a corrupted disk when I discovered the floppy driv...
by Rasputin
Mon Oct 26, 2020 7:25 am
Forum: HELP!
Topic: Roland D-5 Keyboard scanning problem, need help.
Replies: 3
Views: 2406

Re: Roland D-5 Keyboard scanning problem, need help.

Just on a hunch, I would check all the diodes in the keybed, particularly the ones pertaining to your semi-non-working keys.
by Rasputin
Tue Oct 13, 2020 8:40 pm
Forum: HELP!
Topic: LCD display replacement (Roland MKS-50)
Replies: 2
Views: 1884

Re: LCD display replacement (Roland MKS-50)

Does anyone have any info on how and which replacement display works? Some cheap 16x1 LCD with LED backlight such as, https://www.crystalfontz.com/product/cfah1601btmiet-16x1-lcd-character-display?fbclid=IwAR0QgnFXcHIOzNfaiDf5sCWXg4MIqoe2lwJ4lBlvcXT7AkIMAKsFcN7COMs or a 16x1 OLED, but this requires...
by Rasputin
Tue Oct 13, 2020 8:27 pm
Forum: General Synthesizers
Topic: Yamaha RX11 Repair Thread
Replies: 17
Views: 13843

Re: Yamaha RX11 Repair Thread

I've got an RX11 that's started doing some weird stuff on the LED/LCD screen. Showing some JAPANESE characters, then just squares. It seems likely to be corrupt data being sent to the display because of a poor solder joint or header connection. The display is being initialized incorrectly or not at...
by Rasputin
Tue Oct 13, 2020 8:25 pm
Forum: General Synthesizers
Topic: Yamaha RX11 Repair Thread
Replies: 17
Views: 13843

Re: Yamaha RX11 Repair Thread

What's the reason the sound chips is impossible to replace with Eproms? Is it because of the ROM-chips themselves (pinout, electrical characteristics etc) or is it that the format of the ROM images is unknown and never reversed engineered? Numerous reasons: Custom ICs, can't easily be read, no writ...
by Rasputin
Thu Oct 08, 2020 12:27 am
Forum: HELP!
Topic: Multivox MX 3000 repair
Replies: 21
Views: 12413

Re: Multivox MX 3000 repair

gilles77 wrote:
Wed Oct 07, 2020 4:06 pm
I just recovered a broken MULTIVOX MX3000 and am looking for schematics to fix it
It's in the Service Manuals and Schematics thread which is pinned in the 'HELP' section of the forum.

http://forum.vintagesynth.com/viewtopic ... &start=105
by Rasputin
Mon Sep 07, 2020 9:15 pm
Forum: General Synthesizers
Topic: Ensoniq VFX SD Patches, Presets, Sounds, Cartridges & Disks
Replies: 12
Views: 14850

Re: Ensoniq VFX SD Patches, Presets, Sounds, Cartridges & Di

frankothemountain wrote:
Mon Aug 24, 2020 11:13 pm
Do you still have the VPC-103 files? dropbox link is dead.
They're in the SysEx link in the first post.
by Rasputin
Mon Sep 07, 2020 9:09 pm
Forum: Samplers
Topic: Yamaha tx16w
Replies: 12
Views: 15932

Re: Yamaha tx16w

Okay, I'm finally done. Here's the entire Yamaha TX16W service manual booklet and the ridiculously gigantic schematics poster which was nearly impossible to scan. Given the rarity and amount of scanning hours spent, I should have put this on eBay to make a boatload of money :lol: https://mega.nz/fil...
by Rasputin
Mon Sep 07, 2020 4:13 pm
Forum: Samplers
Topic: Akai S612 Sound Library Archive Project.
Replies: 19
Views: 23572

Re: Akai S612 Sound Library Archive Project.

As an aside, I would also like to see an effort made to archive the S900/S950 libraries. These libraries are also poorly archived, with only a handful of disk images having made their way online. It would be great if we could fully archive those sampler's libraries as well. Dig deep into this one.....
by Rasputin
Mon Sep 07, 2020 3:31 pm
Forum: General Synthesizers
Topic: Six Trak firmware update - why buyng an EPROM?
Replies: 6
Views: 2320

Re: Six Trak firmware update - why buyng an EPROM?

You can't flash an EPROM more than once. You can reflash an EE PROM. Eh... I suppose that's somewhat the gist of it, but it is a bit pedantic and potentially misleading to state it like that in the context of the original post, especially when you also stated you *can* flash an EPROM, but only once...
by Rasputin
Mon Sep 07, 2020 3:07 pm
Forum: General Synthesizers
Topic: Six Trak firmware update - why buyng an EPROM?
Replies: 6
Views: 2320

Re: Six Trak firmware update - why buyng an EPROM?

I got hold of the Version 14 (and also 11) in BIN images formats... Has anyone got instructions of how to flash these firmware files directly on the existing EPROM? Apparently the only way to upgrade is buying the EPROM... That can be done, but you need both an EPROM programmer and an EPROM eraser ...