My Poly-800 works just fine without any batteries. I had to replace the cmos battery once, but after that the programming was preserved.
Another solution is to just pick up a bunch of rechargeable C-cells, and a charger.
I put new batteries in my 800 a few months ago..and it will play for a significant amount of time on battery power alone. I have so many keyboards (4 of them), that I really appreciate running one or two on batteries since I already fill up a couple power strips.
My microKorg runs on AA duracells, and of course the Poly 800, but it would would nice if my R3 also had battery power capabilities.
Gor
To: korgpolyex@yahoogroups.com
From: thetravelsource@...
Date: Thu, 12 Mar 2009 08:23:58 -0700
Subject: RE: [korgpolyex] Poly 800 A/C Adapter Issue
Thanks for the thought, but I am a bit of a purist and would like to restore it as near to original as possible. The batteries are necessary in the poly-800 as you probably know to keep the system memory...no removing those and attaching the wall-wart leads in their place.
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--- On Wed, 3/11/09, LARRY HAWKE
com> wrote:
From: LARRY HAWKE com>
Subject: RE: [korgpolyex] Poly 800 A/C Adapter Issue
To: korgpolyex@yahoogroups.com
Date: Wednesday, March 11, 2009, 11:06 AM
Hey, kind of a crazy idea...but would you ever consider wiring the power adapter directly to the battery compartment? I've done that before with keyboards that had broken connectors for the adapter.
Gor
To: korgpolyex@yahoogro ups.com
From: thetravelsource@ yahoo.com
Date: Tue, 10 Mar 2009 14:12:03 -0700
Subject: Re: [korgpolyex] Poly 800 A/C Adapter Issue
Thanks for the ideas Gordon. The power supply I have is fine. Tip negative, 9v, sufficient amperage. When I test the circuit at the pin inside the Korg, I get voltage. I am wondering where to go next...a diode, a resistor, etc.
--- On Tue, 3/10/09, Gordon JC Pearce
wrote:
From: Gordon JC Pearce
Subject: Re: [korgpolyex] Poly 800 A/C Adapter Issue
To: korgpolyex@yahoogro ups.com
Date: Tuesday, March 10, 2009, 6:45 AM
thetravelsource wrote:
> My Poly-800 works fine on batteries but I have not been able to use the A/C adapter for years. I think someone once fried the circuit with the wrong adapter or polarity and I am wondering if anyone has had a similar problem and knows where to begin to repair.
Are you sure the power supply is working? If it's not, then there's
your answer. I think they're negative-to- middle, 9V - same as
Boss/Roland/ Kawai, not like Yamaha.
The power connectors on the Poly-800 (and indeed anything that uses that
type of connector) are usually pretty reliable, but tend to fail such
that the batteries don't work and an adaptor does! What happens is that
there's a pin up the middle for one connection and a springy metal strip
that touches the outside of the plug when it's in, or another metal
strip connected to the battery (so it acts as a switch). The only way I
can see for the thing to work
on batteries but not with a working mains
PSU is either the pin is broken, or there is a bad solder joint between
the tag with the pin and the board.
> I am finding it hard to search the group messages via yahoo for similar problems. Perhaps there are no other posts but if someone knows of an answer on this group, please point me to it.
Yahoo Groups search is knackered. Utterly useless.
Gordon
