I'd try using a conductive pen to give you something to solder onto if
there's nothing really left to solder, just be real careful you don't
short any pins together with the pen.....I'm not aware of conductive
glue, but if it exists, then perhaps that would be the way to go.....

Good luck!

Ryan

--- In tr-707@yahoogroups.com , "philo_707" <philo_707@...> wrote:
>
>
> It was all shared sounds. That's actually what I wanted to hear, I
> was thinking IC32 from the schmatics and the connection that caused
> the problem, but I'm no electronics guru, so I wasn't sure. I'll
> try that first.
>
> BTW, I managed to yank pin 62 off the gate array while messing with
> a wire, took the solder pad and everything, so no hats. I looked at
> the schem., and if I connect pin 26 of IC34 to the stub I get the
> hats back perfectly, the catch is the connection is so tiny I can't
> get it soldered. I tried dremeling away at the chip as someone else
> on here did, which helped a little, but frankly Im afraid of
> destroying the whole gate array. Should I try a conductive glue or
> what The irony is I had already done hat decay mods, placing the
> pots in the casing.
>
> It's frustrating, the connection is right there but I can't get it
> together.
>
>
>
>
> --- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@> wrote:
> >
> > Seem's it would be IC32 or IC33 (or both), they toggle the lowest
> > address line, so when enabled all the addresses would be even or
> when
> > disbaled all addresses would be odd....however, I'd assume if they
> > were busted, it wouldn't just be RS/CB....it would affect all
> sounds
> > that are shared (BD1 & BD2, SD1 & SD2)....is it the same problem
> will
> > all the sounds or just the Rimshot & cowbell.
> >
> > ryan
> >
> > --- In tr-707@yahoogroups.com , "philo_707" <philo_707@> wrote:
> > >
> > >
> > > Do you know which IC is responsible for routing between
> interleaved
> > > sounds I have a dead 707 that first stopped routing, so that
> it
> > > worked great except that there was no rimshot, both rim/cow
> played
> > > cow and so on, although the sound sets sequenced normally.
> > >
> > >
> > >
> > >
> > > --- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@> wrote:
> > > >
> > > > Eprom's, like all parallel memory, addresses it's memory in
> binary
> > > > format. Think of the address lines as being binary
> inputs....for
> > > every
> > > > address line you add, like binary, doubles the amount of
> locations
> > > > (numbers) it can access. Inside the memory, the address pins
> are
> > > > decoded to select different areas of the memory.
> > > >
> > > > 1 address lines = 1bit :: 2 values (memory locations)
> > > > 2 address lines = 2bit :: 4 values (memory locations)
> > > > 3 address lines = 3bit :: 8 values (memory locations)
> > > > 4 address lines = 4bit :: 16 values (memory locations)
> > > > 5 address lines = 5bit :: 32 values (memory locations)
> > > > 6 address lines = 6bit :: 64 values (memory locations)
> > > > 7 address lines = 7bit :: 128 values (memory locations)
> > > > 8 address lines = 8bit :: 256 values (memory locations)
> > > >
> > > > and so forth.....
> > > >
> > > > So, imagine you have a 32k X 8-bit eprom, that would require 15
> > > > address-lines (32,768 memory locations)...that is what the
> size of
> > > > each eprom is in the 707/727. If you wanted to double your
> memory
> > > > (sample banks) would only require an addition address line
> (each
> > > > address line doubles memory that can be accessed)....seeing as
> > > address
> > > > lines are just binary inputs, you can see how it would be easy
> to
> > > add
> > > > a single switch to toggle on/off (+5v, 0v) that extra address
> line
> > > to
> > > > switch between your (now) 2 banks of memory.
> > > >
> > > > That's what circuit bending is all about, they cross (short)
> > > address
> > > > lines which causes errors in the memory location access, which
> > > cause
> > > > the glitch sound....
> > > >
> > > > So, the way the 707 samples are interleaved in memory are just
> > > > organized in a linear way (just like a mono recording), one
> sound
> > > > after another. But what has stopped all the eprom hackers from
> > > going
> > > > ahead with new samples for these machines (unlike drumulator
> or dmx
> > > > for example) is that the sounds (like BD1 & BD2) are
> intereleaved,
> > > and
> > > > they've been too lazy or unimaginative to proceed, saying "it's
> > > > impossible" and hopeless shite like that :) Intereleaved
> sounds,
> > > think
> > > > of 'em like this;
> > > >
> > > > BD1 sample1 -> BD2 sample1 -> BD1 sample2 -> BD2 sample2 ->
> etc.
> > > >
> > > > after all of the BD samples are over the next sample set
> follows
> > > > (interleaved)
> > > >
> > > > SD1 sample1 -> SD2 sample1 -> SD1 sample2 -> SD2 sample2 ->
> etc.
> > > >
> > > > Pretty simple heh :)
> > > >
> > > > I taught myself some C++ basics through online tutorials,
> though
> > > > because i do audio DSP, i use the Synthedit SDK to develop
> stuff,
> > > > which is a great platform. Check out these sites;
> > > >
> > > > http://www.cee.hw.ac.uk/~pjbk/pathways/cpp1/cpp1.html
> > > >
> > > > http://www.cprogramming.com/
> > > >
> > > > http://www.cplusplus.com/doc/tutorial/
> > > >
> > > > That should get ya started
> > > >
> > > > Seeya
> > > >
> > > > Ryan
> > > >
> > > >
> > > > --- In tr-707@yahoogroups.com , "acousmatique" <acousmatique@>
> > > wrote:
> > > > >
> > > > > --- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@>
> wrote:
> > > > > >
> > > > > > According to the service manual, they are interleaved quite
> > > > > > simply.....sounds that are shared (ie. BD1 & BD2) have
> occupy
> > > the same
> > > > > > adreesses, except one has even adresses & one has
> odd....you'd
> > > have to
> > > > > > write a small application that would organize new samples
> in
> > > this
> > > > > > way....but it's a simple routine & probably within my C++
> > > scope.
> > > > >
> > > > > Arg... This is where my understanding of digital drum
> machines
> > > has
> > > > fallen apart! I have
> > > > > read quite a few tutorials on EPROM addressing, and I still
> > > doubt if
> > > > I get it. Maybe I'm
> > > > > thick! Also I have no C or C++ experience. Any advice on
> > > how/where I
> > > > can learn about
> > > > > coding for low-level stuff like this Or even what key words
> I
> > > might
> > > > want to search for
> > > > > Happy it's within *your* scope, anyway! >;]P
> > > > >
> > > > > CJ
> > > > >
> > > >
> > >
> >
>