Search found 699 matches

by Rasputin
Thu May 23, 2019 2:18 pm
Forum: HELP!
Topic: Dx7 strange problem, help me!
Replies: 2
Views: 59

Re: Dx7 strange problem, help me!

Jorge de Carvalho wrote:
Wed May 22, 2019 10:24 pm
This only happens with B and C keys on the lower octaves
Fairly random guess? Bad diodes in the key matrix in that specific section which ordinarily would prevent "ghosting".
by Rasputin
Thu May 23, 2019 2:11 pm
Forum: General Synthesizers
Topic: Here are disk images for Emulator 1, Fairlight and Emax
Replies: 3
Views: 74

Re: Here are disk images for Emulator 1, Fairlight and Emax

madtheory wrote:
Thu May 23, 2019 9:43 am
These discs are hard to find and they shouldn't be! I especially object to people making money out of these.
Highly agree.

Valiant attempt, sir! But I believe you copy/pasted a truncated link :(
by Rasputin
Thu May 16, 2019 11:47 pm
Forum: HELP!
Topic: Oberheim Matrix-6 -- No display, no sound but PS seems to be fine
Replies: 4
Views: 234

Re: Oberheim Matrix-6 -- No display, no sound but PS seems to be fine

theotherjen wrote:
Thu May 16, 2019 7:27 pm
The display isn't working, none of the LEDs light up and there is no sound on the output.
Check all the basics such as seeing that the CPU is getting 5V, clock, and reset.

That said... cross your fingers and hold down the STORE button while powering up. If you works again, you're blessed.
by Rasputin
Wed May 15, 2019 2:18 pm
Forum: HELP!
Topic: Yamaha PSS-480/580/680 firmware?
Replies: 11
Views: 370

Re: Yamaha PSS-480/580/680 firmware?

Virgule wrote:
Tue May 14, 2019 7:37 pm
The saved patches stay in storage as long as the power adapter is plugged in (whether unit is on or off). Not much useful if the keyboard has to be moved around and I'd definately preffer if they resided permanently.
They just have to be battery backed, that's all.
by Rasputin
Tue May 14, 2019 1:35 pm
Forum: HELP!
Topic: Yamaha PSS-480/580/680 firmware?
Replies: 11
Views: 370

Re: Yamaha PSS-480/580/680 firmware?

Replacing the Rom sounds would indeed make more sense. Are the 100 preset patches written in from sysex files? You would have to use an EPROM programmer to burn a new ROM and then open up the synth to replace the presets. And you'd also have to wire up a bank selector knob, etc. if you wanted to ex...
by Rasputin
Mon May 13, 2019 1:08 am
Forum: HELP!
Topic: Yamaha PSS-480/580/680 firmware?
Replies: 11
Views: 370

Re: Yamaha PSS-480/580/680 firmware?

Increasing the number of save slots is more what I had in mind than replacing the onboard sounds. Keep in mind that I haven't deeply explored this idea, but: I think increasing the amount of user patch slots is more or less "impossible" because (at least on the PSS-480/580) they are kept in 64K of ...
by Rasputin
Sun May 12, 2019 3:53 pm
Forum: HELP!
Topic: Yamaha PSS-480/580/680 firmware?
Replies: 11
Views: 370

Re: Yamaha PSS-480/580/680 firmware?

Does anyone know if a firmware revision or update was ever released for these Yamaha keyboards? I'm wondering if there's a way to permanently replace the rom presets with custom ones. I think there are two separate questions there. If Yamaha ever released some "final update" for that series, it wou...
by Rasputin
Sat May 04, 2019 12:15 am
Forum: HELP!
Topic: Korg M1 buttons not working
Replies: 37
Views: 4858

Re: Korg M1 buttons not working

Well I’m happy to say that way worked! All buttons function as they should, I know it’s not the proper fix but it works for me. I soldered the jumper wire to the exact points in your illustration, thank you so much for your input Rasputin & mooger I don’t think I would have found this info anywhere...
by Rasputin
Fri May 03, 2019 8:26 pm
Forum: HELP!
Topic: Korg M1 buttons not working
Replies: 37
Views: 4858

Re: Korg M1 buttons not working

Should I try a jumper from the third pin of CN4B to IC25 pin 13 (like in the photo drawing below) That's the right idea, but this picture might make the situation clearer. The purple area is the commonality between the buttons that aren't working. The red wire is a signal which usually passes from ...
by Rasputin
Fri May 03, 2019 12:25 pm
Forum: HELP!
Topic: Korg M1 buttons not working
Replies: 37
Views: 4858

Re: Korg M1 buttons not working

I jumped a wire from CN4B pin 3, to the third wire of connector CN5A on the mainboard and (strangely) the up/down buttons started working but would scroll through the settings out of order I'm assuming that was a typo and you mean CN4B on the mainboard side. But this should not be necessary if you ...
by Rasputin
Sat Apr 13, 2019 2:58 pm
Forum: Samplers
Topic: s950 floppy drive replacement
Replies: 21
Views: 1932

Re: s950 floppy drive replacement

BTW, those jumpers correspond to what I mentioned at the start of the thread:

Drive Select 0, Ready on pin 34, density on pin 2

FG (frame ground), REN (re-calibrate every power-up), DS0, RY34, HA, HO2

HO2 = HD signal output on pin 2
HA = density set automatically with diskette type
by Rasputin
Fri Apr 05, 2019 2:12 pm
Forum: General Synthesizers
Topic: Roland Alpha Juno 1 Firmware Features Wishlist
Replies: 0
Views: 952

Roland Alpha Juno 1 Firmware Features Wishlist

Let's just say, *hypothetically*, someone was developing a software update for the JU-1. What software related features might one desire? OLED support falls within the domain of software, and that feature has already been released for the JU-2, so that's a given. Same thing with the All Notes Off MI...
by Rasputin
Thu Apr 04, 2019 10:44 pm
Forum: HELP!
Topic: Long Shot. Looking for a Potentiometer ROLAND
Replies: 3
Views: 1007

Re: Long Shot. Looking for a Potentiometer ROLAND

I really hate to put non matching parts in. The knob is what makes the part match ;) Kind of joking, but somewhat serious because the exact part doesn't necessarily matter as long as the resistance and taper is the same, and so long as it will fit physically. I mean, the brand/model and the body of...
by Rasputin
Wed Apr 03, 2019 10:11 am
Forum: Samplers
Topic: s950 floppy drive replacement
Replies: 21
Views: 1932

Re: s950 floppy drive replacement

- my biggest concern is above pin2 there's a scratch over the track, pretty sure I didn't do that... was that done by the modifier to block the original path? it looks like it goes to DNS (where the gap hasn't been bridged yet) is that the density select thingy? Correct on both assumptions. I forgo...
by Rasputin
Wed Apr 03, 2019 1:05 am
Forum: Samplers
Topic: s950 floppy drive replacement
Replies: 21
Views: 1932

Re: s950 floppy drive replacement

I bought on ebay and disk drive modified to work in an Amiga. I was told they work with s950's. I've taken everything apart on the s950 and swapped drives over. Akai S950 has to be: pin 2 - density pin 34 - ready and drive ID 0 Amiga is drive ID 0, so that's correct. But pin 2 is diskchange, not de...