Vintage Synth Repair

--- In vintagesynthrepair@yahoogroups.com, "Roy J. Tellason" 
<rtellason@...> wrote:
> Been there and done that one,  for sure -- "I've checked 
*EVERYTHING*!!!"  
> Only it turns out that I hadn't,  that I'd missed something 
subtle,  or at 
> least not apparent to me because I'd gone at something with some 
assumptions 
> in place that weren't apparent to me either.  I hate it when that 
> happens!  :-)
> 
> Is there in fact a write pulse getting to the ram chip?  When it's 
needed?  
> And are all of the other signals at that chip correct for what it's 
supposed 
> to do?  Hard to tell without a logic analyzer,  for sure.
> 
> And battery corrosion is such *nasty* stuff,  it just eats copper 
traces right 
> up.  Your problem could be in a plated-through hole for all you 
know.
> 
> Worse yet,  it could be something that doesn't show up all the 
time,  it's bad 
> when the board is in the normal operating position but when you 
move things 
> to get at it to test stuff,  it looks okay.
> 
> Something like that,  anyhow.







=


OK, you convinced me ;) We're gonna search...search... till we find 
it !!! :) 
thanks guys for opinions

BTW - has anyone of you out there got service manual for Juno60 / 
Kawai SX-240 ?