Archive of the former Yahoo!Groups mailing list: Yamaha CS80

Hi again chaps,

I'm posting my question yet again as there's a lot of activity and my
really important question (to me) keeps getting lost amongst all the
other, admittedly more interesting stuff.

Please could someone take a look for me:-

I'd like to perform the decoupling upgrade on the TKC board as per
Scott/'Old Crow's' site.

Looking at the photo I can ∗just∗ make out where these need to be
soldered, but need to double check please. There seems to be two types
of IC package/casing used here...

I did a search for 4000 series pin-out, could any tech here confirm
for me that the capacitors need to go between pin8 and pin16 on the 16
pin IC's and between pin7 and pin14 on the 14 pin IC's..?

Also the other capacitor value mentioned on Scotts site-

Quote:
"....and a 100uF aluminum electrolytic across each power rail
input to the common circuit ground."

The TKC board has a -6.5v and +8.5v input and also the E(0v)

Would I just need the two 100nf caps across those terminals please?
ie: -6.5v and E & +8.5v and E

Thanks for any help,
TOM