Search found 2025 matches

by rhino
Mon Sep 19, 2016 4:03 pm
Forum: Gear Services & Other Goods
Topic: Kawai K1 II and Kawai K4 keyboard
Replies: 4
Views: 5318

Re: Kawai K1 II and Kawai K4 keyboard

Ok. You may be in luck. Maybe someone with actual experence with these two could chime in. It is possible that the keyboard assembly may fit, or be made to fit. I was mistaken that you wanted to swap main boards - that would not be practical. I is my GUESS that Kawai would likely use the same keyboa...
by rhino
Thu Sep 15, 2016 6:04 pm
Forum: Gear Services & Other Goods
Topic: Kawai K1 II and Kawai K4 keyboard
Replies: 4
Views: 5318

Re: Kawai K1 II and Kawai K4 keyboard

At a glance, it look like the K1-ll has fewer buttons than the K4, so that would have to be considered. May I ask why you are wanting to do this and what is the desired result?
by rhino
Sat Sep 10, 2016 7:57 pm
Forum: HELP!
Topic: Classical organ - replacement parts issue
Replies: 7
Views: 1855

Re: Classical organ - replacement parts issue

Hello.
Are all tones distorted, or only those associated with the replaced ICs?
Why are the ICs in such strange sockets? Are there componets under the IC?
Check the power supply(s) going the generators: perhaps a regulator has failed and is supplying too high voltage.
by rhino
Fri Sep 09, 2016 6:54 pm
Forum: HELP!
Topic: Esq-1 glitching
Replies: 4
Views: 1305

Re: Esq-1 glitching

A little more info please.
Guesses from afar:
1. corroded connections on cables between boards
2. glitching voltage regulator
3. try a hard reset
by rhino
Thu Aug 18, 2016 2:51 am
Forum: HELP!
Topic: Best way to repair broken PCB tracks?
Replies: 21
Views: 7791

Re: Best way to repair broken PCB tracks?

While on occasion I have jumpered the traces at the break, I have had better luck using longer jumpers (insulated) and going from the nearest componet pad to one on the other side.
by rhino
Tue Aug 16, 2016 9:09 pm
Forum: General Synthesizers
Topic: Testing
Replies: 16
Views: 5355

Re: Testing

Hollrow. I am son of Nigerian king Oswald. I have many vintage synthesizzers must needs be smuggled out of country.
Spies are watching me always so must need yours help. Please to send me 100 new iPhone 8 and I will ship the syntheizzers to you. Can do? :lol:
by rhino
Thu Aug 11, 2016 7:12 pm
Forum: HELP!
Topic: AX-80 O.S. hacking co-op?
Replies: 89
Views: 26723

Re: AX-80 O.S. hacking co-op?

WOW! I am far beyond impressed. I wish now I had asked for help in creating world peace, a cancer cure, and time travel! Kudos, cheers and fist-bumps to all.
:shock:
by rhino
Wed Aug 10, 2016 11:59 pm
Forum: General Synthesizers
Topic: Ensoniq ESQ-1 - is it supposed to be noisy?
Replies: 13
Views: 5425

Re: Ensoniq ESQ-1 - is it supposed to be noisy?

ESQ's are a great old machine, but Ensoniq had problems with the plating they used on conncetors. First, try opening the synth and cleaning and re-seating the connectors - DANGER !!!!!! DO NOT REVERSE OR MIS-PIN ANY!!!!!!!!!!! Also, try cleaning with Caig DeOX or similar the output jack. work the pl...
by rhino
Wed Jul 27, 2016 5:27 am
Forum: HELP!
Topic: Long shot-anyone familiar w/ the Poly AT on a CS80?
Replies: 6
Views: 2173

Re: Long shot-anyone familiar w/ the Poly AT on a CS80?

Each keys aftertouch resistor is like a pot: a sliding contact on a resistive element. The tops and bottoms of all AT resistors are tied to +15 and -15 volts. I cannot find the values right now but I'd say the AT signal on each key should swing about +5 to -5 volts as the key is pressed (maybe plus ...
by rhino
Wed Jul 27, 2016 12:37 am
Forum: Synth Shootouts
Topic: Neuron vs. Fizmo vs. K5000 vs. Morpheus vs. FS1R
Replies: 15
Views: 15889

Re: Neuron vs. Fizmo vs. K5000 vs. Morpheus vs. FS1R

WARNING the following is IMHO only... 1. K5000. You need a good editor and about a week to craft a realy good soundset. The ability to use or remove partials in non real world configurations is a big plus. 2. FIZMO. This beast will move up to #1 as soon as someone cracks the SYSEX code and we can ac...
by rhino
Tue Jul 26, 2016 11:05 pm
Forum: HELP!
Topic: Long shot-anyone familiar w/ the Poly AT on a CS80?
Replies: 6
Views: 2173

Re: Long shot-anyone familiar w/ the Poly AT on a CS80?

Looking at the schematics http://therogoffs.com/cs80/manuals/CS80_Service_Manual/cs80_foldout_block_diagram.jpg there is no aftertouch strip as in most newer synths. There is a seperate resistive sensor on each key. The board with all the ICs mentioned in the above article is an overly complex 'scan...
by rhino
Tue Jul 26, 2016 9:23 pm
Forum: HELP!
Topic: Long shot-anyone familiar w/ the Poly AT on a CS80?
Replies: 6
Views: 2173

Re: Long shot-anyone familiar w/ the Poly AT on a CS80?

Never had a CS80, but read this. Sounds like your next move.

http://www.oldcrows.net/~oldcrow/synth/tips.txt
by rhino
Sun Jul 24, 2016 10:03 pm
Forum: HELP!
Topic: AX-80 O.S. hacking co-op?
Replies: 89
Views: 26723

Re: AX-80 O.S. hacking co-op?

Still getting the story from Akai that details of the AX-80 OS are long lost/destroyed. Next plan is to create a board with a small microprocessor and a bunch of tri-state buffers that can halt the CPU in the synth and do a 'body snatcher' like invasion of the RAM, translate the patches into MIDI an...
by rhino
Sat Jul 23, 2016 8:25 pm
Forum: HELP!
Topic: Technics Organ GN9 FDD failure?
Replies: 3
Views: 1521

Re: Technics Organ GN9 FDD failure?

Modern (sic) Floppy drives are quite similar. Unless Technics went with some off-the-wall disc format (like early Ensonic and Korg DSS) a good computer or synth tech should be able to set the internal jumpers of a new drive to make it work on the organ. Even if a new wiring harness has to be made, I...