Korg Poly 800II Nearing the end?

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Happyman
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Korg Poly 800II Nearing the end?

Post by Happyman » Sun Oct 24, 2010 5:31 pm

Hi,
I've had my Korg Poly for just under ten years. All of my patches have been saved externally and the battery has never been changed. Just recently, note by note, it is slurring and going wildly out of tune. One patch actually made a loud hissing noise and stopped working briefly. When any pressure is applied to the front panel tuning becomes worse (although this has been the case for years.) I'm getting the impression that it's on it's way out but just want to confirm that it isn't battery related or perhaps something can be done to restore it? Any suggestions would be gratefully received. Many thanks

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rhino
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Re: Korg Poly 800II Nearing the end?

Post by rhino » Sun Oct 24, 2010 6:56 pm

People often assume regular 'dry cells' are not like those nasty Ni-mh batteries that leak s**t. WRONG !!! Good ol' 'flashlight' batteries can leak and make a Gawd-aweful mess. Have a Poly800-II on the shelf right now... As bad as any PolySix !!!! Only major difference is drycell crud seems to target the tin plating on the connectors.

You need to open it up and check. and yes, IIRC there IS a coin-cell to hold the memory also.

IF I'm right, you will need to clean the c**p, repair the connectors, check the copper traces. Then chances are you be good to go.
When the wise man points to the stars, the fool looks at the finger.
- Confucius

Happyman
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Re: Korg Poly 800II Nearing the end?

Post by Happyman » Sun Oct 24, 2010 7:20 pm

Thanks for the answer. I'm guessing the battery will need changing soon, but there's no leakage. I just opened up the back, tightened the screws in the affected area and now tuning is stable- I'd forgotten that this worked last time. As for the single patch being unpredictable, I don't get it. The envelope parameters aren't in correlation with the actual sound for some reason but at least I've solved one problem.

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