[sdiy] broken chorus on mks-30

[Bob Weigel]

Hehe.. that's a for sure.  I've bought so many that allegedly were just 
put in the closet.  Read the sounddoctorin.com page on the prophet 5 for 
one such example.  Goes to show that rodents come in all sizes.  
Microchip rodents often burrow into the substrates where they make their 
nests.... but as long as you keep energizing the chips intermittently it 
prevents them from pursuing this as they always 'case the joint' ... or 
joints in this case..for some time to make sure no rapid thermal 
variations occur; something which they cannot tolerate in their happy 
homes.

btw I'll post the section of the diagram that is missing unless someone 
knows a resource that has it.  Actually it seems the links on my page 
for 'far too good' which used to have it are gone.  -Bob

David G. Dixon wrote:

>Danjel,
>
>The solution is simple: stop putting your synths in the closet!  ;->
>
>David G. Dixon
>Professor
>Department of Materials Engineering
>University of British Columbia
>309-6350 Stores Road
>Vancouver, B.C. V6T 1Z4
>Canada
> 
>Tel 1-604-822-3679
>Fax 1-604-822-3619
> 
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>>-----Original Message-----
>>From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>>bounces at dropmix.xs4all.nl] On Behalf Of Danjel van Tijn
>>Sent: Saturday, March 28, 2009 3:11 PM
>>To: synthdiy DIY
>>Subject: [sdiy] broken chorus on mks-30
>>
>>I pulled my mks-30 out of the closet and found that it is no longer
>>working %100. The synth works perfectly until I turn the chorus on.
>>With chorus engaged the output is distorted and I hear a loud hum.
>>
>>I can find schematics for every part of the mks-30 except for the
>>power board that has the chorus circuit on it.
>>
>>Has anyone experienced a simmilar problem and know how to fix this?
>>Maybe they have a scan of the schematic?
>>
>>In exploring the synth which has 6 perfectly working 80017A chips I am
>>wondering if this synth is worth more as parts then as a working
>>synth? For example the the 80017A chips sell for $60 each x 6 = 360USD
>> while the average mks-30 only sells for about $275.
>>
>>cheers,
>>Danjel
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>>Synth-diy at dropmix.xs4all.nl
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>>    
>>
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