Yamaha CS80

"No voice 3 on channel 2, but ONLY in panel mode???? This seems like a weird issue...

"
are you sure that every panel function works in either of the memory slots for voice 3? i have seen a particular function of a voice fail(vcf,eg,etc), and it appears as certain presets not functioning. 

also, on the aftertouch, when i re-chipped and socketed all the lower boards, i had a bad new CMOS chip on the LARGER board(tks? cant remember name now). it caused the aftertouch to go out completely. all i remember was that it was in the row farthest away from the manual.....

--- On Mon, 3/30/09, Heath Finnie <heathfinnie@...> wrote:

From: Heath Finnie <heathfinnie@...>
Subject: [yamahacs80] CS-80 almost working again! (no aftertouch and missing a voice)
To: yamahacs80@yahoogroups.com
Date: Monday, March 30, 2009, 6:56 PM











    
            Thought I would update the list on my CS-80 work thats been going on. I had help in fixing some of these problems which is great since some of them to me were stumpers.



Here is what has been done:



Power supply rebuilt

Ring Modulator envelope fixed (bad IG00159)

Output hi/low switch rebuilt

constant pitch/loss of pitch controls (bad trace on the BA board)

Funky 3 would not sound (bad transistor on the BA board)



Some things that are left to do and a bit of a mystery:



No aftertouch. (The aftertouch worked when I got the synth but now I have none on any key on either channel which makes me think its something global. The voltages seem to be fine on the TKS board....)



No voice 3 on channel 2, but ONLY in panel mode???? This seems like a weird issue...



And last will be a full calibration.




 

      

    
    
	
	 
	
	








	


	
	


      

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