Search found 604 matches

by Yekuku
Wed Jan 15, 2020 4:49 pm
Forum: HELP!
Topic: KORG M1 - No sound / Low battery indication. SOLVED!
Replies: 32
Views: 27626

Re: KORG M1 - No sound / Low battery indication. SOLVED!

Hi flyingsaucer and thank you for your kind words. Just use a sharp cutter and cut the epoxy glue perimetrically at the base of the caps. You should be able to desolder the caps without problems. there is no reason to remove the remaining epoxy glue from pcb unless the epoxy is in contact with other...
by Yekuku
Wed Jan 15, 2020 4:15 pm
Forum: General Synthesizers
Topic: Questions about midi gate out and SUM
Replies: 1
Views: 50

Re: Questions about midi gate out and SUM

Hi I havent used a neutron but i have some experience in modular synths, so i hope this helps a bit. Gate signal is send from the keyboard to the VCA (or envelope) and that controls the duration of the note that is held. Midi gate is probably active when a midi keyboard is connected to the midi in p...
by Yekuku
Wed Jan 15, 2020 1:24 pm
Forum: Software Synthesizers
Topic: Try my updated Rebirth RB-338 installer
Replies: 3
Views: 269

Re: Try my updated Rebirth RB-338 installer

My wife had other plans for the weekend, but I am staying home to listen to 4000 rebirth tracks :)
You made my weekend, many thanks !
by Yekuku
Tue Jan 14, 2020 3:50 pm
Forum: Software Synthesizers
Topic: Try my updated Rebirth RB-338 installer
Replies: 3
Views: 269

Re: Try my updated Rebirth RB-338 installer

Thank you very much for this, it brings back memories !
Please share the songs too :)
by Yekuku
Tue Jan 14, 2020 2:50 pm
Forum: General Synthesizers
Topic: DIY Modular Synth help
Replies: 2
Views: 104

Re: DIY Modular Synth help

All modular synths have CV and Gate Inputs so that they can be controlled by keyboard or sequencer. The Oscillator frequency is controlled by CV and the amplifier or envelope is controlled by gate. Here is an interesting keyboard with CV and gate outputs, the arturia keystep pro : https://www.sequen...
by Yekuku
Fri Dec 13, 2019 12:06 pm
Forum: HELP!
Topic: Dead AKAI S1100 repair
Replies: 0
Views: 467

Dead AKAI S1100 repair

Hi fellow VSErs, I saved a s1100 from going into the trash bin and I would like to bring it back to life. I would like to have some support because I am not that good in troubleshooting digital circuits. Symptoms are : - dead mainboard, on power up nothing happens only the lcd lights up showing a bl...
by Yekuku
Thu Nov 07, 2019 9:04 pm
Forum: HELP!
Topic: Low Korg Prophecy output?
Replies: 5
Views: 3532

Re: Low Korg Prophecy output?

I changed all theese condensers and both outputs are O.K. and loud now. Hi and thanks for letting us know. Hmm thats strange, I guess I am missing sth here. Both prophecies that I have owned were definitely not loud, they needed more than the usual gain compensation to stand in the mix with other s...
by Yekuku
Wed Oct 30, 2019 2:29 pm
Forum: HELP!
Topic: Novation Supernova 2 issue
Replies: 7
Views: 1433

Re: Novation Supernova 2 issue

Hi and welcome to the board. It looks like the unit freezes during boot. I have seen this before and the culprit was either the ribbon cable or a bad Ram IC. You can try this , but I doubt that it will work: How can the Supernova/SuperNova II be completely reset? To restore the operating system of a...
by Yekuku
Mon Oct 28, 2019 12:42 pm
Forum: HELP!
Topic: Service Manuals and Schematics!
Replies: 101
Views: 146788

Re: Service Manuals and Schematics!

iowagold wrote:
Sun Oct 27, 2019 3:18 pm
any parts lists or schematics for the korg radias 49 keybed?
I have one for the radias rack.
I just need the one for the keybed with a parts list.
here it is :
https://filebin.net/bu0fnmkjcc4qk9tm/RA ... t=lz3eik69
Password is &radiaskb
by Yekuku
Mon Oct 21, 2019 6:57 pm
Forum: HELP!
Topic: KORG M1 - No sound / Low battery indication. SOLVED!
Replies: 32
Views: 27626

Re: KORG M1 - No sound / Low battery indication. SOLVED!

I am glad I could help ! Enjoy your M1 ! :keys1:
by Yekuku
Thu Oct 17, 2019 3:59 pm
Forum: General Synthesizers
Topic: Yahoo Groups Archive
Replies: 9
Views: 1987

Re: Yahoo Groups Archive

Hi Rasputin,
this is so sad, there is so much useful information on yahoo groups.
How can we help ?
by Yekuku
Thu Oct 10, 2019 8:43 am
Forum: HELP!
Topic: Dim/faded/unreadable LCD-display, Roland SC-33
Replies: 2
Views: 981

Re: Dim/faded/unreadable LCD-display, Roland SC-33

Hi and welcome to the forum. Sorry I havent seen an SC-33 in real life, but from personal experience there are a few causes that can render an LCD unreadable : 1) faded backlight. 2) Lcd not making proper contact with pcb 3) faded LCD About 1) , usually you can replace the led that lights up the bac...
by Yekuku
Mon Oct 07, 2019 5:35 pm
Forum: HELP!
Topic: KORG M1 - No sound / Low battery indication. SOLVED!
Replies: 32
Views: 27626

Re: KORG M1 - No sound / Low battery indication. SOLVED!

If you could post a picture , it would be easier for me to understand whats going on.
The glue that is used to hold components in place, sometimes gets corrosive and destroys surrounding parts.
Did you check the voltages on the power supply ? (+12V/-12V/5V )
Good luck !
by Yekuku
Mon Oct 07, 2019 11:01 am
Forum: HELP!
Topic: KORG M1 - No sound / Low battery indication. SOLVED!
Replies: 32
Views: 27626

Re: KORG M1 - No sound / Low battery indication. SOLVED!

Hi WORKSOP and welcome to the forum.
I cant see the photo that you have posted , so I cant help much.
The L4 is an inductor (coil) and when coils fail they dont produce corrosion , they are either "open" or partially shorted.
Have you done a factory reset after the battery replacement ?
by Yekuku
Fri Sep 20, 2019 7:48 am
Forum: HELP!
Topic: ARP Omni burnt resistor
Replies: 4
Views: 1173

Re: ARP Omni burnt resistor

Hi Lukas, unfortunately the list that you have provided does not help. The burned resistor should be R44 = 100 Ohm, but I am not quite sure because all the service manuals that i could find were unreadable at this section. Also , resistors do not burn by themselves , there is sth else triggering thi...