Rhodes Chroma Polaris

> From: charlespjackson
>
> I have a Polaris that has seemingly seized up completely?
> Basically it powers on with about half the leds remaining lit.
> None of the push buttons are operational nor any of the keys.
> Other than powering on absolutely nothing is functional!
> It is also producing an awful sustained noise.  Any ideas?

The computer is crashed, so nothing is initialized. The LEDs power up in a
random state, and the analog circuits have random control voltages on them.
The only conceivable "dumb" fix would be to unplug an replug all socketed
chips in the vicinity of the CPU. I don't remember if the CMOS RAM chips are
socketed, but if they are, first remove the battery (and be aware that
you'll lose the stored programs and calibrations). Other than that, there's
no alternative but to have a technician open the thing up and debug it with
a scope.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...