Cgs synth

Been testing my voltages (with blown LM3900s removed) btw, pin 9 is getting burns on IC socket.

1) +7.50
2) 0
3) -7.41
4) -14.01
5) +3.59
6) -0.06
7) -14.87
8) -0.01
9) 0
10) -0.10
11) -0.06
12) +8.06
13) -3.34 (stepped), +5.82 (smooth)
14) +14.86

Strange voltages I'm getting.
-Sean

--- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@...> wrote:
>
> Sorry, that came out as a big garbled mess.
>
>
> 1) +13.54
> 2) 0
> 3) -9.23
> 4) -14.35
> 5) +11.13
> 6) -0.113
> 7) -15
> 8) -.010
> 9) 0
> 10) -.112
> 11) -.115
> 12) +13
> 13) -4.92 (Stepped U5) +12.64 (Smoothed U2)
> 14) +15
>
> --- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@> wrote:
> >
> > So all the voltages read the same on both chips except for pin 13 which i make a note of :
> >
> > 1) +13.54 14) +15
> > 2) 0 13) -4.92 (U5 Stepped) +12.64 (U2 Smooth)
> > 3) -9.23 12) +13
> > 4) -14.35 11) -.115
> > 5) +11.13 10) -.112
> > 6) -0.113 9) 0
> > 7) -15 8)-.010
> >
> > --- In cgs_synth@yahoogroups.com, sasami@ wrote:
> > >
> > > Seriously, chip frying is indication of serious power routing issues.
> > >
> > > With the chips OUT, read the voltages on each pin of the socket, then list
> > > them here.
> > >
> > > Ken
> > >
> > > >Thanks again Ken, and Rich for all the helpful suggestions.
> > > >I've triple checked component values at this point,replaced
> > > trannies,ic's,gone over continuity testing and visually inspected the board
> > > under a magnifying lens with no luck.
> > > >
> > > >There has to be a short or something that i am just not seeing because i'm
> > > getting inconsistent results when i plug it in every time i make a change.I
> > > fried another lm3900 in the smooth section only this time it took a few
> > > minutes.I've been able to get a slewed/smoothed signal to pass but no
> > > control over the hold or rate, i've gotten a steady tone from plugging the
> > > cycle into the in of the smooth section but again no control to change the
> > > pitch and now i'm back to were i started with no effect and a strong
> > > negative voltage on the outputs ?
> > > >
> > > >I'm gonna take a little break but at this point i'm seriously considering a
> > > do over.
> > > >
> > > >Thanks again guys i really appreciate you taking the time to offer your
> > > time and experience !
> > > >
> > > >--- In cgs_synth@yahoogroups.com, sasami@ wrote:
> > > >>
> > > >> Been thinkng about this - The problem may also be caused by putting a
> > > >> voltage on the input pins, which are designed for current, not voltage.
> > > >> Check nothing is shorted to them. Check your resistor values. Maye sure you
> > > >> haven't installed 15 ohms instead of 1M.
> > > >>
> > > >> Ken
> > > >>
> > > >> >Will do.Thanks guys!
> > > >> >I'll report back when i get this working.
> > > >> >
> > > >> >--- In cgs_synth@yahoogroups.com, Richarius Molindarius
> > > >> <richmolindarius@> wrote:
> > > >> >>
> > > >> >> Use a well lit magnified lamp. Especially for that board. Hard to find
> > > >> >> small trace breaks and bad solder joints.
> > > >> >>
> > > >> >>
> > > >> >> [Non-text portions of this message have been removed]
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> >------------------------------------
> > > >> >
> > > >> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> > > >> >Yahoo! Groups Links
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> _______________________________________________________________________
> > > >> Ken Stone sasami@ otherunicorn@
> > > >> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> > > >> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > >------------------------------------
> > > >
> > > >The CGS Modular Synth home page: http://www.cgs.synth.net/
> > > >Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > _______________________________________________________________________
> > > Ken Stone sasami@ otherunicorn@
> > > Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> > > Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> > >
> >
>