> From: wasteking1@...
>
> i was playing a gig--had my Polaris set up, it worked in the
> sound check fine-- then turned it off--- turned it on before
> our set was to start and the Polaris turned on with 90% of
> the led's on--and no sound , and was unresponsive to all
> buttons. i turned it on and off and no change. so gave up
> playing it for the set--
> packing up after the show i plugged it in again and it seemed
> to light up normally ,
> but i wasnt able to experiment playing it at that time--
> now a day later, i set it up again --turned it on and have
> the same unresponsive LEDs on status, and still wont
> play or respond to controls. the LED 's almost all on is
> very abnormal.

When you're looking for your keys, the first place to look is under the streetlight. If you have the earlier version power supply, it's possible that the DC OK threshold is set too close to 5V, and sometimes the processor is being held in reset. There's an LED on the power supply that turns on when the power supply releases the reset line to the processor, so if that stays off, then that's the problem.

There are plenty of other possible causes. In a very old instrument like this, the EPROMs could be fading, and the computer crashing, meaning the EPROMs should be reprogrammed. But that would be just as likely to happen in the middle of playing. The fact that it only happens or doesn't happen when you turn it on smells like the power supply adjustment.

--

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