Discussion about the Korg PolySix synthesizer

Check the Crystal Quartz and also check the lines with a scope from the CPU ...
 
regards,
 


lnz2166 <lnz2166@yahoo.com> wrote:
Ok..... Rebuilt the power supply. It now works, Changed the battery and 
re traced most of the area. replaced the 74LS08 next to the battery but 
still now sound. Finally got a scope and checked the Signal Out test 
pin and I show noise riding on a crude sine wave and the sine wave is 
weak and modulated by seems to be a clock. In other words the sine 
jumps up and down the scope screen. When I hook the signal output to a 
amp, I hear a consistant click sound. Changing some of the controls 
seems to change the click pitch. Any Ideas what is wrong?
In addition I check test point TP4 whic is supposed to read =10v but I 
read a few milliamps. I download the schematice from Old Crow but its 
so hard to read. Any Ideas again 





PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 



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