tjhanks----ill try to check that next week---- i do have a scope, but am a rookie with it......  ill update  soon

On Monday, January 8, 2018, 7:20:05 PM EST, 'Paul D. DeRocco'pderocco@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

 

> From: wasteking1@... 
> 
> i pulled out my 'spare' polaris from storage--- it had been 
> fine last it was played...and also has new membrane 
> panels--but found that now it wont play in tune--- and wont 
> auto tune--- in fact as you go up the keys the intervals are 
> odd and even play the same note on successive keys. According 
> to other posts , I believe this has to do with bad voice 
> capacitors on the main board.
> Does this seem a likely diagnosis? and if so, what would 
> the replacement capacitors be --
> (type/value/ quantity)? Would there be any other matters of 
> concern to replace them?

It's almost certainly not the capacitors, because that would likely affect one channel first, and then maybe another one a year later, not all six at once. There's probably something wrong in the signal path that's common to all the channels. One likely place to look is the wires that carry the ALT OUT signal from the main board up to the output board, and the SYNTH ZCD line back to the main board. Connectors are always suspect. But this is the type of thing that isn't easy to diagnose without a scope.

-- 

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...