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Subject: Re: Battery backup mod - and a fault appeared...

From: "Quazimodo" <noddyspuncture@...>
Date: 2012-12-09

Thanks for the tip Martin,

Yes, it is much more apparent on headphones. But I'm still convinced it is there on the outputs... but very, very quiet - so not much to worry about at all.

The thing is I have used the synth a lot on headphones before and never noticed it.

Would there be any specific reason for the symptom..?

Cheers,
TOM



--- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@...> wrote:
>
> Are you listening on headphones or the main out?
>
>
>
>
> ________________________________
> From: Quazimodo <noddyspuncture@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, 9 December 2012, 19:12
> Subject: [korgpolyex] Battery backup mod - and a fault appeared...
>
>
>  
> Hi guys,
>
> I'm new to the group - hello, and hope you don't mind me diving straight in with a question..!?
>
> I have a Poly800 Mk1. I just performed the battery back up mod as outlined on a website I found. Just previous to this I had no sounds in the synth as it was not used for a while and after the mod I reloaded them all to check it out.
>
> But I noticed that on notes played in the lowest octave, (on patches that are programmed 'low') I am getting the top high octave notes breaking through - very quietly in the background. I suspect it is probably there on all patches, but most apparent on the bassier ones...!?
>
> Now, to perform the mod the instuctions told me to remove: C87, C88, D23 and D15 near to where the battery symbol is and where I put my holder.
>
> I am now wondering if this might be the cause as I have just looked in our files section here and there is a battery backup mod that describes a completely different method - removing R1 and D1...!
>
> I would need to take the synth apart and reverse the procedure to see, as it was definitely not doing this last time I used it - and before I performed this mod..!
>
> Could anyone please tell me if this might be a 'fault' that has appeared and is just coincidental?
>
> Many thanks for any help.
> Cheers,
> TOM
>