Hola-
having repaired about a dozen of these & sent them back out into the
world, my advice is to check ALL the data and address lines.
What I've done is to make myself a chart (using the schematic for
reference -- and you might want to get hold of Old Crow's corrected
schematic);
I have a list of ALL the IC pins & connector pins that contact D00,
D01, etc; then get my continuity tester & check each one, down the
list. It's amazing how easy it is (when repairing a battery-damaged
board) to miss some pins -- or short them; shorted data or address
lines can cause all kinds of merry havoc.
Also, one point of interest that some people overlook when repairing
acid-damaged boards is the connector pins (down at the board level,
inside the plastic housing) -- I've seen several of these that were
broken, which causes intermittent or missing contact to the front
panel and/or voice board.
In short, just be thorough & take your time.
Good luck.
~GMM
--- In PolySix@yahoogroups.com, "toorglick" <toorglick@y...> wrote:
> So, I jumped all of the traces from IC30 as well, so that makes ICs
> 30 and 31 as well as R17 completely jumped. I have jumps from
> several traces around where the battery sits to various places on the
> board.
>
> Here's what I experience. Patches 1 - 4 work. The rest don't.
> Manual works.
>
> I can't select a waveform, it's stuck on the variable pulse
> waveform. I can turn the sub-osc on and off and select the range.
> Changing the resonance alters the pitch of all notes. While I can
> change the rate, depth, and delay of the LFO, I can't get it ∗not∗ to
> modulate something (yes, the wheel is all the way forward). The
> envelope section seems to be partially available.
>
> Since I've rewired and quadruple-checked the wiring of ICs30 & 31, I
> can't imagine those are causing me my woes. Right? I've checked
> continuity now on all traces in the the battery section of the board
> and from the connectors along the top of KLM367. Where am I not
> looking to rememdy what remains the problem.
>
> Please help.