Yamaha CS80

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
> 
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]