Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

Hello!

I´m a lurker member from Finland and just want to thank everybody for their postings here... I have had a Polysix for twenty years and became aware of the battery problem as soon as I joined this list a good many years ago. I replaced the battery with a lithium 3V with the help of the Old Crow site and info on this list. It had not yet leaked, so I thought everything´s OK...and it was for a couple of years.

But a year ago my Polysix stared to act strangely...many of the symptoms were those that had been described on this list several times; memory didn´t work anymore, the speeding LFO on all sounds, D bank led on all the time no matter what you did etc etc.

Trawling thru the mails in the archive and checking the Old Crow site further, I finally dared to dismantle the unit and check the area around the battery. It seemed that a few traces were corroded, regardless of the fact that they seemed to be OK when I changed the battery! So I take the board off and marked the bad traces carefully and retraced the bad connections with thin, insulated wire UNDER the board. It was easier this way, I think...

And now everything works just fine! All the problems went away, just by replacing five corroded connections around the IC that´s just beside the battery...

so the moral of the story is that probably the original battery had already leaked something on the board, even if it looked to be as good as new. And the actual corrosion happened later...

I am very happy and the Polysix is in action again!

cheers and thanks!!!

Ami