[sdiy] When vintage stuff comes as an ideal....

Carlos Portela carlosrochaportela at gmail.com
Wed Jun 11 09:25:35 CEST 2014


The capacitance was diferent from me designed value. More them 20%. In
some cases more them 50, 60%, if I remember right..

Not a big debate but: http://electro-music.com/forum/viewtopic.php?t=61413

2014-06-11 8:59 GMT+02:00 Gordon JC Pearce <gordonjcp at gjcp.net>:
> On Wed, Jun 11, 2014 at 08:50:27AM +0200, Carlos Portela wrote:
>> I replaced all the electrolytic capacitors on my ms20, because some
>> parts were not working propraly, especially the lfo.
>> Checked some of the replaced caps and they were bad. Instead a
>> selected replacement, replaced all.
>
> Weird.  "Bad" how?
>
>> Why do you say "Disc ceramics, however... ooft."?
>
> They leak.  I replace dozens of them a month, depending on whose kit I have on the bench.  There's a particular make and model of radio that goes utterly deaf because three little 0.1μF SMT ceramic caps go leaky and screw up the biasing, although I think I've got pretty much all of them replaced now.  Hopefully they'll hold up for another 10 years and then they'll be someone else's problem.
>
> --
> Gordonjcp MM0YEQ
>
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