[sdiy] Kurzweil K2000 Query continued

[Bob Weigel]

Again..does anyone have the ability to come up with a setup 5.0 Lo 
code?  We're missing just that chip on a Calvin unit.

DTK wrote:

>A bit more information on this:
>
>First, for those who suggested changing the batteries:  There are actually 
>no batteries in this machine.  The owner uses the synth as a controller, and 
>for stock sounds.  According to him, he removed the batteries long ago.
>
>The volume loss has continued, but there is still no noticeable change in 
>sound quality.  I'm thinking that maybe something is going out in the final 
>output stage.  Anyone have any suggestions?  I'll be googling for schematics 
>momentarily, but if you know where I can get them, or the service manual, 
>feel free to chime in.
>
>Thanks
>
>
>
>  
>
>>I'm taking a look at a K2000 for a friend.  It's exhibiting a strange
>>problem... at least, I think it's a problem.  If I hadn't been there when 
>>it
>>happened, I might have thought it was nothing.
>>
>>We were playing, and suddenly the K2000 lost volume...  It wasn't a 
>>dramatic
>>loss, the patch was still audible, but there was *definitely* a loss in
>>volume.  The patch wasn't changed or edited, mixer settings weren't 
>>changed,
>>etc.  It just got quieter all of a sudden.
>>
>>At first we thought it might be some sort of mechanical failure in the
>>output jack... A solder joint on the way out, or a worn out center
>>connection.  However, that doesn't seem to be the case.  The problem
>>persists on the L, R, and Headphone jacks, and on different patches as 
>>well.
>>
>>I'm a bit puzzled by this one, frankly.  There's no difference in the 
>>audio
>>quality, which leads me to think that the output circuitry is ok.  Anyone
>>have any thoughts?  Suggestions?
>>
>>As a side note, the battery in this K2000 is DEAD... 0.0v according to the
>>warning when we power it up.  I don't think that would have anything to do
>>with the problem, but please correct me if I'm wrong!
>>
>>Thanks for any insights you may have...
>>
>>    
>>
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