[sdiy] OBXa cards uses either 15uf -or- 22uf caps ?!

Gil W. gil_we at yahoo.com
Tue Mar 29 02:03:00 CEST 2016


Well, there are 7 of them on each card. Could all be "only" power bypass ? should there be any sonic difference between the two types of boards ?



--------------------------------------------
On Tue, 3/29/16, Nils Pipenbrinck <n.pipenbrinck at hilbert-space.de> wrote:

 Subject: Re: [sdiy] OBXa cards uses either 15uf -or- 22uf caps ?!
 To: synth-diy at dropmix.xs4all.nl
 Date: Tuesday, March 29, 2016, 1:23 AM
 
 On 03/29/2016 12:41 AM,
 Gil W. wrote:
 > ok this one is strange.
 >
 > I opened up an OBXa,
 and I can see that some voice board have all 15uf
 electrolytic caps, while on others they are all 22uf
 !
 
 
 The service manual lists these caps as
 15µF.
 
 Probably Oberheims
 part dealer run out of 15µF caps during production 
 and they just upped the value to the more
 common 22µF to keep going.
 
 It's just the power bypass cap anyway, so
 the exact value does not make 
 much of a
 difference.
 
 Best,
    Nils
 
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