OBERHEIM SYNTH

OK - per my own note below, I actually tracked down the replacement parts for my voice board connectors.  Last night I replace all my connectors on a single voice board and the results are fantastic.  Parts are an exact fit.  I have ordered more parts and will be replacing all connectors on all 8 of my voice boards.  With shipping, parts for all 8 board will cost about $60. 

I ordered from Mouser.  They are Molex bottom entry, solder-in parts.  

The following are the part numbers, and the number of parts needed for EACH voice board. 

538-09-52-3082  Rectangular Connectors PCB RECPT 8P BOTTOM ENTRY
1 per board

538-09-52-3042  Rectangular Connectors PCB RECPT 4P BOTTOM ENTRY 
1 per board

538-09-52-3032  Rectangular Connectors PCB RECEPT 3P Bottom entry
3 per board

538-09-52-3102  Rectangular Connectors PCB RECPT 10P BOTTOM ENTRY  
2 per board



--- In oberheim@yahoogroups.com, "nelsonj_sce" <nelsonj_sce@...> wrote:
>
> Ok - worked on the Beast some this weekend...
> According to the services manual, after calibrating, "Turn off test switch 1 (set to the up position)."  So they claim "up" is "off".  
> 
> However, I have my switches set as follows(from left to right) (1)Down, (2)Down, (3)Up, (4)Up, (5)Down.
> 
> Again, the last three switches determine the number of voices.  I have my set for voices.  If I want 8 voices I set the last switch to the up position.
> 
> In an earlier note, I talked about one VCO on voice 5 having a strange +5V auto-tune voltage that was throwing the oscillator to the wrong pitch.  It turns out that this was caused by switch 2 being in the Up position. When I put switch 2 down, the auto-tune seemed to work correctly.  All my voices/OSC have an auto-tune voltage of between about +2.3 and +2.8V now.  
> 
> Anyway, my connectors (wires from motherboard to voice trays, voice cards connections to trays) continue to drive me crazy.  Everything works, but the connectors never seem to work 100% and I lose a voice or an OSC or PW or a gate or something constantly... I have to open things up and work the connectors to get good connections.  I have all sorts of jumpers to from the motherboard to try to cure the most chronic problems, but it is getting out of control. 
> 
> Has anyone done a "permanent" upgrade to end this connector issue once and for all?  If yes, can you tell me what you did, where you got the parts, and send me pictures? 
> 
> Thanks. 
> 
> 
> 
> 
> 
> --- In oberheim@yahoogroups.com, "nelsonj_sce" <nelsonj_sce@> wrote:
> >
> > 
> > I have to take mine out of the rack, open it up and look in side.  As I recall, "Up" is on, but let me double check. 
> > --- In oberheim@yahoogroups.com, jim finch <jahg88@> wrote:
> > >
> > > I have the "5" switch version.Which position is considered "on"?
> > >                         Jim
> > >
> >
>