Korg Poly800/EX800 Users

On Wed, 2009-01-07 at 04:39 +0000, Brian Rost wrote:
> First question on the Mk1.
> 
> How long should I expect a fresh set of Duracells to maintain the patch memory if I'm always 
> running the 800 from AC?

As the main batteries?  Shouldn't make a difference.  If you've got the
mains adaptor plugged in, the batteries are disconnected.

> If I do the watch battery mod, how long will **that** battery last?

Depends how big the watch battery is.  The Poly-800 has a coin cell
battery on the motherboard already, which looks like it could be a nicad
(although mine hasn't started leaking corrosive gunk yet).  There's also
a crude trickle charger in the power supply stage.  What I tend to do is
replace the coin cell or lithium cell batteries in old synths with a
couple of AA batteries - alkalines have a long shelf-life, so they're
ideal for this because you're only drawing a few microamps with the
power off.  You do need to check the circuit diagram to make sure that
there isn't a nicad charger trying to charge them up though!

Gordon