Sounds like some of the TKS offsets are not right. Re-check with a good quality multimeter
Do you have a scope? I can tell you what might be wrong, but you will probably need to trace it.
AK
> dzlvs8@... <dzlvs8@...> wrote:
>
> I love you Andy! I've only got a few more issues before everything is
>
> fixed now. I'm still only able to get the other three oscillators in
> tune
> on one of the four octave setting. I'm thinking ai just need to tweak
> some
> stuff on the TKS board or I need to mess with VR1 on the voice card for
> the
> note that doesn't sound good.
>
> The other problem is that portamento doesn't work. but its stuck on
> fast
> for one note and.is annoying. I can't turn it off or change ramp speed.
>
> Once in a great while I can mess with it and get it to do a long
> portamento
> slide but only once. and only on that one note.
>
> Any ideas on where to start looking?
>
> Sent via DROID X on Verizon Wireless
>
> -----Original message-----
> From: Andrew Kirkby <kirkbyte@...>
> To: yamahacs80@yahoogroups.com
> Sent: Sat, Apr 16, 2011 23:39:28 GMT+00:00
> Subject: Re: [yamahacs80] Making Progress but need HELP
>
> I buy everything from Digikey (www.digikey.com) - the part number is
> 296-2036-5-ND
>
> AK
> On 17/04/2011, at 8:45 AM, dzlvs8 wrote:
>
> > Well I have a stuck note and rooted it down to my 4016 IC. Luckily
> > online info helped me focus in that area and I verified that the
> > 4016 isnt working right. BUT where can I get a suitable replacement
> > for the 4016BP IC on the sample and hold circuit.
> >
> > Please please please please help me out. I cant find anything. Im
> > about to go to radio shack and buy a LM324 Quad Op Amp
> >
> > ......and I'm pretty sure that will ruin some more stuff.
> >
> >
> >
>
> Andrew Kirkby
> (e) kirkbyte@...
> (m) 0416 000 070
>
>
>
>
>
>
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>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
>
> [Non-text portions of this message have been removed]