This sounds like the power supply regulation is out of adjustment. A
really good tech who has fixed several poly's said every one of them
needed the voltage adjusted to the proper spec in the power section.
Old capacitors and components will cause this circuit to drift. Then
the CPU can't initialize the unit. The symptoms were very similar to
yours.
--- In korgpolyex@yahoogroups.com, Tim Bieniosek <tab27@...> wrote:
>
> When you say it doesn't react, does that mean you are unable to edit
> parameters? It's likely that you've simply lost all patch data.
>
> It seems less likely that you could have damaged your OS in eprom.
>
> On Tue, 24 Jul 2007, b_e_r_n_a_r_d_g_u_i_l_l_a_u_m_e wrote:
>
> > hi -
> > I have a crashed poly 800mk1. It doesn't react, weird display,
nothing but a bubbling low
> > sound. Seems like it lost the firmware and I need to replace the
EPROM, right ?
> > Have the eprom bin hex data file, could get a new eprom, but
don't know how to do it and do
> > not want to buy an eprom burner just for this one time. I am in
Vienna, often in Paris too, any
> > suggestion where I can have this done easy, fast and at moderate
costs ? Anywhere within
> > Europe would be cool.
> > thanks -- Bernard Guillaume
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>