Re: [korgpolyex] Looking for EX800 KLM-614-1 schematic / board layout [1 Attachment]
2016-01-25 by Gordonjcp
... You ll probably need to post it to imgur or similar, since the list strips attachments. -- Gordonjcp
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Re: [korgpolyex] Looking for EX800 KLM-614-1 schematic / board layout
2016-01-24 by studio_1a@...
slightly bigger pic, the resolution is not that good. But its a fujisoku TM101 with offset bezel
Re: [korgpolyex] Looking for EX800 KLM-614-1 schematic / board layout
2016-01-24 by studio_1a@...
What a drag!! no they are not regular 6mm tact switch. not only that, the top bezel is offset from the switch itself. see pic
Re: [korgpolyex] Looking for EX800 KLM-614-1 schematic / board layout
2016-01-24 by Gordonjcp
... Are they not just ordinary 6mm tact switches? Post a pic of what you re looking for. -- Gordonjcp MM0YEQ
Looking for EX800 KLM-614-1 schematic / board layout
2016-01-24 by studio_1a@...
All my contact switches on the KLM-614 seem to be non functional, I de-soldered a few of them, checked continuity between contacts but they don t work, tried
Re: EX800 stopped powering on
2016-01-24 by studio_1a@...
So if you ve tried other ac adapters with the same voltage / polarity requirements and still did not power up, then there are a couple of components on the
EX800 stopped powering on
2016-01-24 by phunx747@...
I have had my EX800 since last summer and it has worked without issue. I recently moved my studio around and rewired the whole setup. When done, my EX800 would
Re: [korgpolyex] Power supply problem
2016-01-21 by Vincenzo Vincenzo
hello Malte, I too have the same problem on my poly 800. If I turn off and power back does not start. you have solved? Il Domenica 17 Gennaio 2016 21:39,
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Daniel Forró
I agree, this instrument is really interesting and well done. Tomorrow I will try to adjust a wiper in Traveler filter fader... last thing to repair. It looks
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by LARRY HAWKE
A good design is timeless! [😊] ________________________________ From: korgpolyex@yahoogroups.com on behalf of Michael
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Michael Hawkins
That s great! While I am all for all the new gadgets and technology, I also have a strong attachment to making things last and keeping old things in top
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Daniel Forró
Yes, Gordon, much better than when I damaged something :-) (and there were such cases...) Once more big thanx to all who helped! Daniel On Jan 18, 2016, at
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Gordonjcp
... Glad you got it running! It s a good feeling, isn t it? -- Gordonjcp MM0YEQ
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Daniel Forró
Hi, Gordon, bingo, you were right - it was opamp. Thanks for your time and advice! It was kind of you. Best regards! Daniel Forro On Jan 15, 2016, at 8:55 PM,
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-18 by Daniel Forró
Hi, Mike, it was really that opamp. Capacitors and all resistors were OK, so I have decided to change opamp. New one sits now in the socket and everything
Power supply problem
2016-01-17 by Malte Rogacki
Hello everyone; I m making another attempt to revive some of the carcasses that I have accumulated over the years. Some of this is venturing into almost
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-15 by Michael Hawkins
Daniel, since you have two working oscillators, and one dud. You can draw out the diagram three times, then write down voltages and waveforms and then provide
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-15 by Michael Hawkins
Yes, it s far more likely for a chip to fail in one section when it is an analog type device. Even digital stuff can lose a single stage or line. But op amp
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-15 by Daniel Forró
Hi, Gordon, I know that blind crazy replacing of all caps is not good... But... is it possible that one half of amps in quad op amp LM3900 work, and another
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-15 by Gordonjcp
... I d look at the opamps first. In the thick end of 30 years of repairing electronic equipment, I ve found maybe about seven or eight genuinely faulty
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-15 by Daniel Forró
Hi, Vincenzo, thanks for advice, I usually suspect them... but here are only two caps and seven resistors in LFO circuit... That electrolytic 33 uF/16 on the
Re: [korgpolyex] OT Korg PE-1000 repair [1 Attachment]
2016-01-15 by Vincenzo Vincenzo
Hello Daniel, begin to check and possibly replace the capacitors .. in 90% of cases the fault is due to old capacitors. Il Mercoledì 13 Gennaio 2016 13:07,
Re: Cheap ARM Cortex M3 Dev Board
2016-01-14 by bill@...
Hi Daniel I m not smart enough to help, but given your detailed description, I think there might be someone over at the Sound on Sound forum who could at least
Re: [korgpolyex] OT Korg PE-1000 repair
2016-01-13 by Daniel Forró
Sorry for OT but I m sure somebody of clever members here could help me. I ve just got Korg PE1000 from a friend and could repair some problems like not
Re: [korgpolyex] Re: Cheap ARM Cortex M3 Dev Board
2016-01-10 by Gordonjcp
... Well if we re doing 8-bit shite, here s an Amen break sampled into an Arduino and played through an analogue resonant filter. By messing around with the
Re: Cheap ARM Cortex M3 Dev Board
2016-01-10 by ultragalore@...
I wish I had not bought all those arduino flavours and just sticked to the Teensy. The Teensy range is phenomenal (especially the 3.2): Here s the link to the
Re: [korgpolyex] Cheap ARM Cortex M3 Dev Board
2016-01-09 by Gordonjcp
... I have one of these: http://www.ebay.com/itm/201414966215 ... and a couple of STM32 Discovery boards, which have a built-in ST-Link adaptor. I ve written
Re: [korgpolyex] Cheap ARM Cortex M3 Dev Board
2016-01-09 by Michael Hawkins
very nice indeed. That s a cool little board. Great for someone getting started that already has some know how. I have so much real work going right now that
Cheap ARM Cortex M3 Dev Board
2016-01-09 by bperkins211@...
found this on ebay a few days ago... http://www.ebay.com/itm/351400602033?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Re: Controller setup: Is there an easy way?
2016-01-01 by chillipower.uk@...
Interesting idea - this sounds simple to implement yet flexible too. I wonder if I could set up my X-Station like this. Seems maximum control for minimum
Re: OT Xmas music
2015-12-23 by Daniel Forró
Hi everybody, enjoy some Christmas music on my new YouTube channel if you celebrate :-) Daniel Forró - Forrotronics
cheap Negative 5v supply to drive a NJM2069
2015-12-20 by bperkins211@...
I would like to have a cheap, yet usable -5v supply to power the bipolar needs of a NJM2069 Filter IC chip.. the one inside Korg Poly 800. I was looking at
Re: AW: [korgpolyex] Korg EX-800 flickering display
2015-12-20 by studio_1a@...
well, the manual says 9V 300ma and above. I will try the500ma first tosee what happens.
AW: [korgpolyex] Korg EX-800 flickering display
2015-12-19 by Lütti
Hy, I m not pretty shure if 500mA is enough.Try a 1A power supply first if you can get one. And be aware of plug-polarisation! Gesendet von Yahoo Mail auf
Korg EX-800 flickering display
2015-12-19 by studio_1a@...
Hi folks, I m new to this group. I have acquired a korg ex-800 and when I turn it on the 7 segment display is dim and flickers, pp18 says the circuit is
Re: Controller setup: Is there an easy way?
2015-12-12 by msfshirow@...
Here s a follow up. In a rare moment of clarity, the proverbial light came on while I was re-reading the relevant part of the HAWK-800 manual... Specifically,
New file uploaded to korgpolyex
2015-12-12 by korgpolyex@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the korgpolyex group. File : /5)
New file uploaded to korgpolyex
2015-12-12 by korgpolyex@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the korgpolyex group. File : /5)
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-11 by Michael Hawkins
well, if you check out the MIDI implementation chart of the software version that I have not yet release - yes, you can control any running parameter using
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-11 by Michael Hawkins
The CC# is a bit misleading. But I honestly haven t been able to work out a better name for that column. But no, they are not direct CC numbers. They are used
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-11 by bperkins211@...
I tried to locate an Alesis manual specific for your Photon, but all I found was a Quick Start Guide that didnt even mention how to set up NRPN s. It mentioned
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-11 by domgoold@...
Hi Mike, do you mean by this that these NRPN params can be controlled by Sysex as well? i have some confusion with NRPNs, how to use them. - but manufs do
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-11 by msfshirow@...
Thanks for the reply. Maybe I should have been more clear. After printing out and using the Parameter Quick Reference sheets, I d assumed (dangerous, I know)
Re: [korgpolyex] Controller setup: Is there an easy way?
2015-12-10 by Michael Hawkins
simply assign one MIDI CC to a knob or switch or slider and just have it work, as opposed to what s detailed in the manual This is the method spelled out in
Controller setup: Is there an easy way?
2015-12-10 by msfshirow@...
I recently acquired an Alesis Photon X25 controller keyboard with the intent to set it up to make editing my Hawked-up EX-800 a less headache-inducing
Re: 3D print examples
2015-12-03 by oip_iii@...
was wondering about polishing up the buttons, the material is fine as is but it would be nice to have a glossy finish. clear would actually be an interesting
Re: 3D print examples
2015-12-02 by ultragalore@...
aha, nice! thanks for the update post. The basic 3D material is indeed a bit sandpaper-like , I usually polish it up myself. The hi-res material works out
Re: [korgpolyex] another dead 800
2015-12-01 by mmdatech@...
I just bit banged the B & C busses on the 8155 after calculating the correct addresses. If it s of any interest, I ll happily share the code here. The reset
Re: 3D print examples
2015-12-01 by oip_iii@...
success! got the switches from syntaur last week and the buttons + bezels from shapeways today. the bezels fit on the switches as do the buttons, the bezels
Re: [korgpolyex] another dead 800
2015-11-30 by Michael Hawkins
check the reset circuit. check power supply is stable and on voltage. +5V needs to be within TTL tolerance levels which is about 10% so even a crappy