Korg Poly800/EX800 Users

I just recently installed the HAWK 800 mod in my Poly 800 MK1. When I turn it on the display flashes "88 88 88" and doesn't change to the "HA-800" as said that it should in the manual. I tried to test all of my work after this happened. I replaced the two original chips, desoldered the cpu write jumper and the synth worked fine with the original configuration. I checked continuity on the ribbon connectors. I also checked every solder joint on the hawk board and that the chips were in the right place.

I have the boot ROM v. 1.95

Please help

Thanks,

Ethan

I noticed another thing when I turn it on. Through the headphone output I can hear the filter cutoff slowly sweep from closed to open and the noise generator is on.

--- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@...> wrote:
>
> I just recently installed the HAWK 800 mod in my Poly 800 MK1. When I turn it on the display flashes "88 88 88" and doesn't change to the "HA-800" as said that it should in the manual. I tried to test all of my work after this happened. I replaced the two original chips, desoldered the cpu write jumper and the synth worked fine with the original configuration. I checked continuity on the ribbon connectors. I also checked every solder joint on the hawk board and that the chips were in the right place.
>
> I have the boot ROM v. 1.95
>
> Please help
>
> Thanks,
>
> Ethan
>

Have you tried holding down the Write button when you turn it on to enter diagnostics mode?

--- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@...> wrote:
>
> I noticed another thing when I turn it on. Through the headphone output I can hear the filter cutoff slowly sweep from closed to open and the noise generator is on.
>
> --- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@> wrote:
> >
> > I just recently installed the HAWK 800 mod in my Poly 800 MK1. When I turn it on the display flashes "88 88 88" and doesn't change to the "HA-800" as said that it should in the manual. I tried to test all of my work after this happened. I replaced the two original chips, desoldered the cpu write jumper and the synth worked fine with the original configuration. I checked continuity on the ribbon connectors. I also checked every solder joint on the hawk board and that the chips were in the right place.
> >
> > I have the boot ROM v. 1.95
> >
> > Please help
> >
> > Thanks,
> >
> > Ethan
> >
>

is your onboard battery dead?

--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> If it flashes the displays 88 88 88 but doesn't show HA-800, then I would say you have one or more address lines not soldered or perhaps even bridged.
>
>
> Check that none of the ribbon cable pins have bent over.
> Then double check all of the soldering and check for bridges.
>
> You can always email me directly for installation problems too. Especially if you get to the point where you've run out of options. I have had probably half a dozen customers send their HAWK boards back to me when they couldn't get them working.
>
>
> Mike
>
>
> ________________________________
> From: narfman96 <narfman96@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, March 11, 2012 8:33 AM
> Subject: [korgpolyex] Re: Newly installed HAWK 800 problem
>
>
> Â
> Have you tried holding down the Write button when you turn it on to enter diagnostics mode?
>
> --- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@> wrote:
> >
> > I noticed another thing when I turn it on. Through the headphone output I can hear the filter cutoff slowly sweep from closed to open and the noise generator is on.
> >
> > --- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@> wrote:
> > >
> > > I just recently installed the HAWK 800 mod in my Poly 800 MK1. When I turn it on the display flashes "88 88 88" and doesn't change to the "HA-800" as said that it should in the manual. I tried to test all of my work after this happened. I replaced the two original chips, desoldered the cpu write jumper and the synth worked fine with the original configuration. I checked continuity on the ribbon connectors. I also checked every solder joint on the hawk board and that the chips were in the right place.
> > >
> > > I have the boot ROM v. 1.95
> > >
> > > Please help
> > >
> > > Thanks,
> > >
> > > Ethan
> > >
> >
>

Hi,
when you say : "you have one or more address lines not soldered or perhaps even bridged."
what does mean even bridged ? it is possible to have jumper preinstalled ?
math D.

--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> If it flashes the displays 88 88 88 but doesn't show HA-800, then I would say you have one or more address lines not soldered or perhaps even bridged.
>
>
> Check that none of the ribbon cable pins have bent over.
> Then double check all of the soldering and check for bridges.
>
> You can always email me directly for installation problems too. Especially if you get to the point where you've run out of options. I have had probably half a dozen customers send their HAWK boards back to me when they couldn't get them working.
>
>
> Mike
>
>
> ________________________________
> From: narfman96 <narfman96@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, March 11, 2012 8:33 AM
> Subject: [korgpolyex] Re: Newly installed HAWK 800 problem
>
>
> Â
> Have you tried holding down the Write button when you turn it on to enter diagnostics mode?
>
> --- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@> wrote:
> >
> > I noticed another thing when I turn it on. Through the headphone output I can hear the filter cutoff slowly sweep from closed to open and the noise generator is on.
> >
> > --- In korgpolyex@yahoogroups.com, "eshalsall" <eshalsall@> wrote:
> > >
> > > I just recently installed the HAWK 800 mod in my Poly 800 MK1. When I turn it on the display flashes "88 88 88" and doesn't change to the "HA-800" as said that it should in the manual. I tried to test all of my work after this happened. I replaced the two original chips, desoldered the cpu write jumper and the synth worked fine with the original configuration. I checked continuity on the ribbon connectors. I also checked every solder joint on the hawk board and that the chips were in the right place.
> > >
> > > I have the boot ROM v. 1.95
> > >
> > > Please help
> > >
> > > Thanks,
> > >
> > > Ethan
> > >
> >
>