Hawk
2009-03-18 by Russ
I am totally planning on committing to buy one of the hawk mod kits. Possibly the Tomahawk kit too. I am pretty caught up on bills and almost caught up on my
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Re: [korgpolyex] Re: HAWK-800 for the Poly-800 MK2 - update
2009-03-17 by Michael Hawkins
Hi Fran, I missed those boards because it was my wedding anniversary! Otherwise, there would have been a bidding war up to about - oh - 25 bucks! I have two
Re: HAWK-800 for the Poly-800 MK2 - update
2009-03-17 by narfman96
Pick me! Pick me! Oh wait that s the senior underwater basketweaving class.... I m definitely in. I really did not want to mod this pristine EX-800 I have
HAWK-800 for the Poly-800 MK2 - update
2009-03-17 by korgpolyex800
Hi Poly fans, I tell you, it s just been way too quiet around this list. So let s try to keep this place progressive psy-trancing! Here s an update on the
Re: [korgpolyex] aTomaHawk Mod
2009-03-16 by Michael Hawkins
I haven t finished the new instructions yet either so it s OK to take a little break! ________________________________ From: Alex Drinkwater
aTomaHawk Mod
2009-03-16 by Alex Drinkwater
My aTomaHawk mod kit arrived last week. Looking forward to soldering it up. Unfortunately, I won t get to it for a while though.. :( a|x
Re: [korgpolyex] Digest Number 1282
2009-03-16 by Michael Hawkins
Well, welcome back Dom! When were you last here? Mike. ________________________________ From: dominic goold To: korgpolyex@yahoogroups.com
Re: [korgpolyex] Digest Number 1282
2009-03-16 by dominic goold
hi folks, i´ve just rejoined this group after losing an email account, and want to catch up with developments, re modding a ex-800, since it is once again
Re: HAWK-800 MK2 update
2009-03-14 by narfman96
Mike, This is great news! I m on the edge of my seat... Fran
Re: [korgpolyex] HAWK-800 MK2 update
2009-03-14 by Epiik Soul
Thanks Mike.
Re: [korgpolyex] HAWK-800 MK2 update
2009-03-13 by Michael Hawkins
yes, they are identical. Nice! ________________________________ From: Epiik Soul To: korgpolyex@yahoogroups.com Sent: Friday, March
Re: [korgpolyex] HAWK-800 MK2 update
2009-03-13 by Epiik Soul
Nice! Do you know if the keyboard assemblies for the Mk1 and Mk2 are interchangeable? I way thinking of putting together a reverse-keys Mk2. Thanks
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-13 by TheTravelSource Fes
Thanks Gordon, I appreciate your attention to detail. I will look at those this weekend. Kind regards. John ... From: Gordon JC Pearce MM3YEQ
HAWK-800 MK2 update
2009-03-13 by patrioticduo
Just so all of you know what s going on... I have successfully installed the new HAWK-800 board/kit into my MK2 Poly. And I am now in the process of writing
newbie, re: ex800 mods
2009-03-13 by dominic goold
interested in existing mods to korg ex-800.
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by Gordon JC Pearce MM3YEQ
... Okay, look at page 6 of the service manual. When you put a plug in the DC socket, the two + terminals are pushed apart (the two V shapes in the diagram).
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by Marcus Wilson
just a thought you could try removing the batteries and just using the power adapter in case the wiring to the batteries is a bit munted
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by TheTravelSource Fes
Thanks for the ideas so far. Let me restate the problem. Once the A/C adapter is connected and powered, there is no response from the keyboard (the adapter is
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by Gordon JC Pearce MM3YEQ
... Sounds a bit wrong, actually. That would mean that the batteries and mains adaptor are in series. Is the adaptor the right polarity? Gordon
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by TheTravelSource Fes
I tested at the 9v DC in point with the A/C adapter plugged in and batteries in place. The voltage came to 18V which I understood as the adding of the
RE: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by LARRY HAWKE
My Poly-800 works just fine without any batteries. I had to replace the cmos battery once, but after that the programming was preserved. Another solution is
RE: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-12 by TheTravelSource Fes
Thanks for the thought, but I am a bit of a purist and would like to restore it as near to original as possible. The batteries are necessary in the poly-800 as
RE: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-11 by LARRY HAWKE
Hey, kind of a crazy idea...but would you ever consider wiring the power adapter directly to the battery compartment? I ve done that before with keyboards
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-11 by Gordon JC Pearce MM3YEQ
... That *is* interesting - now I come to look at the circuit diagram, there s a kind of extra series regulator in the negative lead from the power socket that
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-11 by TheTravelSource Fes
Dear Karl, Thanks a lot for that info. I will begin looking at both of those components. I appreciate you taking the time to help. John ... From: Karl Williams
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-10 by TheTravelSource Fes
Thanks for the ideas Gordon. The power supply I have is fine. Tip negative, 9v, sufficient amperage. When I test the circuit at the pin inside the Korg, I get
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-10 by Karl Williams
I just picked up a Poly-800 II for $15 because of the same problem. I m not sure if the design of the power input circuit is the same on the MkII as the
Re: [korgpolyex] Poly 800 A/C Adapter Issue
2009-03-10 by Gordon JC Pearce
... Are you sure the power supply is working? If it s not, then there s your answer. I think they re negative-to-middle, 9V - same as Boss/Roland/Kawai, not
Poly 800 A/C Adapter Issue
2009-03-10 by thetravelsource
My Poly-800 works fine on batteries but I have not been able to use the A/C adapter for years. I think someone once fried the circuit with the wrong adapter or
Re: Parameter increment knob?
2009-03-07 by alecjahn
Most excellent!
Re: [korgpolyex] Parameter increment knob?
2009-03-07 by Ullrich Peter
Hi! This is exactly the circuit I already developed. It works with a small microcontroller and is connected in parallel to the Plus/Minus Buttons of a device.
Re: [korgpolyex] Parameter increment knob?
2009-03-07 by ASSI
... Yes, quite certainly. There is a diagram(*) of the signals put out by the common incremental encoder types. As long as the button poll rate is not too
Re: Dead 800
2009-03-07 by selloutdesigns
I haven t given up on the Poly, just my own ability to get it working in a timely fashion. Possibly if I spent a lot more time I would eventually stumble upon
Re: [korgpolyex] Parameter increment knob?
2009-03-07 by Michael Hawkins
Yes, it would certainly be possible to set up an infinite pot or encoder pot or other such thing. Yes, the HAWK-800 provides parameter selection and data
Parameter increment knob?
2009-03-06 by Alec Jahn
I m just curious whether this can possibly be done. Not being an expert on what sort of electronic components exist... Would it be possible to create a simple
Re: [korgpolyex] Re: Dead 800
2009-03-06 by Michael Hawkins
Well, you might be giving up a little too early don t you think? Remind me again but didn t you say it looked like it had some battery leak on it? If that is
Re: Dead 800
2009-03-06 by selloutdesigns
Okay, I m totally stumped at this point. The main issue I see now with the display is that the IO/M pin on the CPU is low 100% of the time, as confirmed with a
Re: Dead 800
2009-03-05 by zoinky420
... tl072 is the low noise version of tl082, but I wonder if tl062, which is the battery power version would extend Poly800 battery life?? 1mA for the
Re: [korgpolyex] Re: Dead 800
2009-03-04 by Michael Hawkins
The circuit description is correct. Interrupt RES7.5 runs at around 2400 to 3600 hz. It can t run too fast otherwise the CPU won t do anything else except
Re: Dead 800
2009-03-04 by selloutdesigns
Hmm, now I am starting to think I m chasing my tail. In the schematic (pg 6 in Service Manual) for the main board, it shows CPU RES 7.5 as running at .34usec
Re: Dead 800
2009-03-04 by narfman96
Should work fine. Install a good socket if you want. Then you can use a TL072 when you get one.
Re: Dead 800
2009-03-04 by selloutdesigns
Anyone know offhand if a tl082 can safely replace a tl072? They do appear compatible. Thanks,
Re: [korgpolyex] Re: Dead 800
2009-03-04 by Gordon JC Pearce MM3YEQ
... Bah. Just change the TL072 on spec. Horrible things. Gordon
Re: Dead 800
2009-03-04 by narfman96
Definitely timing issues with IC36b the interrupt oscillator. Try disconnecting the output at R107 and see if it runs at the correct frequency. If it does the
Re: Dead 800
2009-03-04 by selloutdesigns
I just got my scope and hooked it up last night. The first odd thing I noticed was that CPU RES 7.5 (interrupt oscillator that drives the display and EG/MG
Re: [korgpolyex] HAWK-800 update
2009-03-01 by Atom Smasher
... ================== the AtomaHawk is still in the box, and i still haven t played with the HAWK-800. over the next few days i m expecting to get something
Re: [korgpolyex] HAWK-800 update
2009-03-01 by Michael Hawkins
Hi Atom, before I answer your questions, I have a question for you. How is the HAWK-800 and AtomaHawk working out for you? I mean, you re the guy that came up
Re: [korgpolyex] HAWK-800 update
2009-02-28 by Atom Smasher
sounds like good stuff... thanks!!! so, for those of us with the original hawk board, we ll just need to swap out one chip and upgrade to a newer firmware?
Korg Poly 800 II - good condition - for sale
2009-02-28 by kawai100f
Hello, is anyone interested to buy a Korg Poly 800 II synthesizer ? It´s in very good condition, only studio-use ... location : germany/hamburg international
HAWK-800 update
2009-02-28 by korgpolyex800
Hi Poly owners, The new batch of HAWK-800 and AtomaHawk boards have come in. The AtomaHawk has a small correction on it. Other than that, the AtomaHawk is no