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Re: Hawk 800 Mod issues

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  • indyisking
    Finally snapped a few pictures of it. I m not a fan of stickers really so I just set the Hawk 800 sticker where it would go for the photos. Enjoy and thanks
    Message 1 of 27 , Dec 2, 2009
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      Finally snapped a few pictures of it. I'm not a fan of stickers really so I just set the Hawk 800 sticker where it would go for the photos. Enjoy and thanks again! The gallery of photos is linked below.

      http://img46.imageshack.us/g/s5000720.jpg/

      --- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
      >
      > Tom,
      >
      > Great news! And, that has got to be one of the best remote troubleshooting experiences I have ever had! Bravo to you for being patient and taking the time to slowly work through the help provided to you. You also did not run off in all different directions and start doing your own thing. Instead, you just relied on the help being given.
      >
      > Bravo to you! And welcome to the succesfully HAWK-ed my Poly 800 club! Pictures please!
      >
      > While on the topic, can any and all of you who have HAWK-ed your EX-800, MK2 or original Poly-800 please upload photos showing the HAWK-800 stickers (assuming that you all used them)! I would love to get a small photo album of the HAWK-800 in use around the world.
      >
      > Thanks,
      >
      > Mike
      >
      >
      >
      >
      > ________________________________
      > From: indyisking <indyisking@...>
      > To: korgpolyex@yahoogroups.com
      > Sent: Fri, November 27, 2009 1:11:33 AM
      > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      >
      >
      > Never mind, I wired it on a whim and the keys are now functioning 100% correctly.
      >
      > I cannot thank you enough for all the support as I would have never troubleshooted this out without you.
      >
      > I infinitely appreciate your contact and the fine mod kit you provide.
      >
      > Best Wishes,
      > Tom Turner
      >
      > --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ ...> wrote:
      > >
      > > OK, there are a couple of possibilities remaining.
      > >
      > > Did your Poly-800 work just fine before you did the HAWK-800 upgrade?
      > >
      > > With the power off and disconnected from the Poly, let's do these continuity tests.
      > >
      > > From IC21 (the 24 pin 6116 chip) to IC34 (40H138) check the following:
      > >
      > > Pin 8 should connect to pin 1.
      > > Pin 7 should connect to pin 2.
      > > Pin 6 should connect to pin 3.
      > >
      > >
      > > If those connections are OK then I would replace IC34 first and if that doesn't fix the problem then I would replace IC33 (40H240).
      > >
      > > I should mention that I have had to replace IC33 once before on a Poly-800.
      > >
      > > In this case, I am more inclined to think that IC34 is fritzed.
      > >
      > > Mike
      > >
      > >
      > >
      > >
      > > ____________ _________ _________ __
      > > From: indyisking <indyisking@ ...>
      > > To: korgpolyex@yahoogro ups.com
      > > Sent: Sun, November 8, 2009 8:00:03 PM
      > > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      > >
      > >
      > > Panel buttons still play notes, no keys operate.
      > >
      > > --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ ...> wrote:
      > > >
      > > > OK, now plug the CN3 back in and then unplug the keyboard connector and tell me if the front panel keys still play notes or if everything works as it should.
      > > >
      > > > If not, then we can move on to the next step.
      > > >
      > > >
      > > >
      > > >
      > > > ____________ _________ _________ __
      > > > From: indyisking <indyisking@ ...>
      > > > To: korgpolyex@yahoogro ups.com
      > > > Sent: Sat, November 7, 2009 12:30:12 PM
      > > > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      > > >
      > > >
      > > > Still only the notes above the second from top G# work. It is playing the correct note and the 8th chromatic note below 2 octaves down it.
      > > >
      > > > An example is G# 4 and C 2 are playing when the G# 4 is pressed.
      > > >
      > > > The buttons no longer play any notes (Or have any effect as I assume was intended by removing CN3)
      > > >
      > > > --- In korgpolyex@yahoogro ups.com, "korgpolyex800" <korgpolyex800@ ...> wrote:
      > > > >
      > > > > OK, as a test, disconnect CN3 from the main board and then let us know if the keyboard works all the way from the bottom key to the top. If the keyboard works, then it would seem that there is either a short on the CN3 cable itself or there is a short on the display/keypad board (that's excluding the possibility of a steering diode short but we will assume that's not the case for now). If the keyboard still doesn't work properly then let me know exactly which keys work and which ones don't. And if you are getting double notes when playing some keys then use a MIDI monitor to determine the exact MIDI notes that are being played together. This will allow us to pin down the exact data lines that are either shorted out, or the exact diodes to check.
      > > > >
      > > > > Mike
      > > > >
      > > > >
      > > > >
      > > > > --- In korgpolyex@yahoogro ups.com, "indyisking" <indyisking@ > wrote:
      > > > > >
      > > > > > I have scoured the main board extensively looking for a bridge and have not found one but in my testing realized the joystick is not operating either. Tomorrow I will pull the display board and examine the keyboard though it seems unlikely to have anything going on there as I have not removed them or worked on them before.
      > > > > >
      > > > > >
      > > > > > --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ > wrote:
      > > > > > >
      > > > > > > this "the program number buttons play notes and also do their normal function." tells me that you have a solder bridge somewhere on the keyboard multiplexing chip input lines on IC33 or on the keyboard itself or the display/keypad board.
      > > > > > >
      > > > > > > My guess is that since you did the HAWK-800 install, you have ended up with a bit of solder on or around the IC33 pins. I would check there.
      > > > > > >
      > > > > > > Mike
      > > > > > >
      > > > > > >
      > > > > > >
      > > > > > >
      > > > > > > ____________ _________ _________ __
      > > > > > > From: indyisking <indyisking@ >
      > > > > > > To: korgpolyex@yahoogro ups.com
      > > > > > > Sent: Thu, November 5, 2009 7:46:55 PM
      > > > > > > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      > > > > > >
      > > > > > >
      > > > > > > I got it to 11 P and the patches are loaded and working. It even operates completely with an external midi controller.
      > > > > > >
      > > > > > > It is just that the the keys below the G# don't work, the keys G# and above play dissonant notes, and the program number buttons play notes and also do their normal function.
      > > > > > >
      > > > > > > --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ ...> wrote:
      > > > > > > >
      > > > > > > > Tom,
      > > > > > > >
      > > > > > > > Can you remind me as to where you got with your installation? Did you get 11 H or 11 P on start up or not?
      > > > > > > >
      > > > > > > > Mike.
      > > > > > > >
      > > > > > > >
      > > > > > > > ____________ _________ _________ __
      > > > > > > > From: indyisking <indyisking@ ...>
      > > > > > > > To: korgpolyex@yahoogro ups.com
      > > > > > > > Sent: Thu, November 5, 2009 2:39:09 AM
      > > > > > > > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      > > > > > > >
      > > > > > > >
      > > > > > > > Hello,
      > > > > > > >
      > > > > > > > Have an extended period of putting this off and trying not to think about it I'm back at working on my poly. I took it apart again and examined everything and nothing is visibly astray.
      > > > > > > >
      > > > > > > > Unfortunately It is a bit beyond my knowledge to electronically test the paths like you mentioned. I just don't have any idea what to do really.
      > > > > > > >
      > > > > > > > I have a multimeter and use it regularly to test voltages and diodes but don't know what to do in this context.
      > > > > > > >
      > > > > > > > -Tom
      > > > > > > >
      > > > > > > > --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ ...> wrote:
      > > > > > > > >
      > > > > > > > > Also, you might want to check for shorts on the CN3 and CN5 connectors/pins on the main board.
      > > > > > > > >
      > > > > > > > > You will need to take a copy of the schematics from the files section here. And using that, work your way down the correct IC33 and IC34 data lines.
      > > > > > > > >
      > > > > > > > > I assume you have a multimeter.
      > > > > > > > >
      > > > > > > > > Mike
      > > > > > > > >
      > > > > > > > >
      > > > > > > > >
      > > > > > > > >
      > > > > > > > >
      > > > > > > > > ____________ _________ _________ __
      > > > > > > > > From: indyisking <indyisking@ ...>
      > > > > > > > > To: korgpolyex@yahoogro ups.com
      > > > > > > > > Sent: Tuesday, September 29, 2009 3:44:38 PM
      > > > > > > > > Subject: [korgpolyex] Re: Hawk 800 Mod issues
      > > > > > > > >
      > > > > > > > >
      > > > > > > > > I pulled, checked, and reset CN3, CN4, and CN5. All were in the correct places and seemed to be set completely and correctly. With CN3 pulled the programming buttons do not function and do not play notes and the said keys work. With CN5 pulled (and CN3 set) the keys do not function and the programming buttons work but also produce notes. Watching the midi signals received when the functioning keys are pressed send two different notes and once. The programming buttons send only one note. Keys below the working keys transmit no midi on/off data.
      > > > > > > > >
      > > > > > > > > -Tom
      > > > > > > > >
      > > > > > > >
      > > > > > >
      > > > > >
      > > > >
      > > >
      > >
      >
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