Vintage Synth Repair

neil johnson of neils webbly world is in the roland w30 group with me and has his doctorate and teaches audio electronics--you might try to get his input.  his website is  http://njohnson.co.uk/ 

bitexion <tom-rf@...> wrote:
--- In vintagesynthrepair@yahoogroups.com, "masada wilmot" 
<masada.wilmot@c...> wrote:
> The service manual is also available a few places on-line including:
> 
>  
> 
> http://www.lazyblueoctopus.com/html/vintage_synth_docs.html

I already found the service manual, but being no electronics expert 
the various print charts mean little to me..There is no 
troubleshooting section in the back that presents my exact syndromes, 
which isn't exactly expected either. I was only hoping someone had an 
MS-10 with similar problems. I realise it could be lots of things, 
and probably hopeless to answer without looking at the synth itself.
But I've narrowed it down just by tweaking the controls to:

1. Dead VCO section
2. Something with VCA that prevents the oscillator signal to pass to 
the filter. 

I've had enough synths to check that the EG isn't set to 0 sustain 
level :) Another thing..wouldn't someone that is well-versed in 
video/TV repairs be able to fix an old synthesizer too?
That broadens the field quite a bit when it comes to finding 
repairmen. They share lots of the same things, don't they?




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