200e

Hi Roger,
I can't answer the questions about the reversed wires (I think you'll have to call b&a), but I 
might there is a procedure for calibrating the  "fm in" knob on the principal osc.  You can 
expect a small bit of offset from the "fm in" knob but if it seems a like a lot, turn it all of 
the way down and then hold down the Midi/hard/soft sync button.  The light should not 
come on.  Now try the knob.  It should solve the problem.  Again.. it WILL offset a tiny bit.
BTW, are both modules running the same firmware versions?

--tom



--- In 200e@yahoogroups.com, "roger.barret" <roger.barret@...> wrote:
>
> I'm for posing more technical questions, but I understand Buchla and 
> Associates does not support 2nd hand modules.
> 
> I reported before that I have a pair of 259e modules.  One module is 
> misbehaving and one is good.  I notice that the black and brown wires 
> that connect to noisy and quiet ground are reversed in position on 
> the PCB of the module that is misbehaving. 
> 
> Sweeping the main frequency knob on the misbehaving module results in 
> alot of jitter. The Principal osc is also affected by sweeping the 
> knob on "fm in" to full even when nothing is patched in.
> 
> Are these issue affected by noisy and quite ground?  Should I reverse 
> the connections on the PCB to make them consistent with the module 
> that is not experiencing these issues?  Or, is thes jitter problem 
> because the pot is wearing out and I should just replace the pot?  
> BTW, does anyone know the make and model of the pot and values of the 
> pots on the 259e?  The fine tuning pot is the only pot with markings.
> 
> Thanks!
> 
> Roger.
>