Vintage Simmons Drums (UK) Users Group

To be fair to Michael, I may have mis-understood what he originally told me in his original email to me. Possibly something lost in translation, as he is in Germany and I am in the USA (German to English and visa-versa) but he did say the caps get weak with age, so I understood that they are what needed replacement, which is why I replaced them. Having done so, it now seems that the problem is with the IC's rather than the caps in my case. 

Is there a test to specifically condemn the IC's?

--- In Simmons_Drums@yahoogroups.com, jesper <jesper@...> wrote:
>
> My views after two minutes and not really thinking it through...
> 
>  From experience: I've changed one (tantal, in a Variophon, anno 1982)
>  From laziness: Why change?
>  From electronics specs: Who wants to service my +50 machines? Drifting 
> shit makes analogues more juicy... ;)
>  From a practical view: Yes, PSU ones might be an idea, so that them 
> failing isn't destroying things on the boards. At least have a look 
> while there digging... But on the boards, why bother? Broken ones are 
> easy to locate if that happens.
> 
> A channel on my 1986 (?) mixer recently failed. Cap? Probably not, but 
> if it proves to be I'll probably dig into the rest too. That thing 
> really needs to work in my setup.
> 
> Regarding service my experience says that it's a failed IC in 90% of the 
> service cases. The most unusual fault was a burnt resistor (!) in a 
> SDS-IV (pet her for me Patrice!).
> 
> -- 
> electronically yours, jesper
> 
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se
> 
> 
> 
> Jacquot.Patrice@... skrev 2013-05-21 19:30:
> > About the caps, I'm facing 2 schools tech :
> > the one who is thinking logically than it's better to have new & full
> > spec caps so they can provide their real electronic function... So it
> > hsould end in a balanced result better than having random behaviours...
> >
> > & the other one who says "NO", we change them if we have to & only if we
> > have to...
> >
> > But the fact is that 30 years after ... they are in theory ath the end
> > of their Time.
> >
> > Actually they are not necessary dead...
> > I also wonder if following the period of productions & marks, they are
> > not all the same quality...
> >
> > Were the ones used by Simmons some high quality ones ?
> > or cheaper to keep the cost production lower as possible... ??
> >
> > We all know that, if the design & concept was top notch, Simmons was not
> > top quality handcrafting, or mecanical engineering...
> >
> > SO all your experiences guys about caps are really important to know !!
> >
> > I have a vintage mixer with master fully recapped ... We have the
> > tendancy to think that it's closer to original product like this than
> > with some old drifting caps & components.
> >
> > I'm not preaching for any of these 2 conceptions, both can be logical...
> > but I feel we all need to know about both & to experience about it !
> >
> > Bless you :)
> > Patrice.
> >
> >
> > ----- Mail d'origine -----
> > De: Nick Zampiello <newallianceeast@...
> > <mailto:newallianceeast%40yahoo.com>>
> > À: Simmons Drums <Simmons_Drums@yahoogroups.com
> > <mailto:Simmons_Drums%40yahoogroups.com>>
> > Envoyé: Mon, 20 May 2013 23:16:38 +0200 (CEST)
> > Objet: Re: [Simmons Drums] Re: SDS 9 elementary problem & deeper fault
> >
> > right!
> >
> > there's definitely times when you might not...
> >
> > i thought this about my SDSV until i just did all of the caps not on the
> > cards.
> >
> > power supply and some on the back card seating board.
> >
> > it was so much better sounding.
> >
> > z
> >
> > NEW ALLIANCE EAST!!!!
> >
> > --------------------------------------
> >
> > New Alliance East - Mastering
> >
> > New Alliance East - Facebook
> >
> > X :::: B :::: S
> >
> > ________________________________
> >
> > From: jesper <jesper@...
> > <mailto:jesper%40electronic-obsession.se>>
> >
> > To: Simmons_Drums@yahoogroups.com <mailto:Simmons_Drums%40yahoogroups.com>
> >
> > Sent: Monday, May 20, 2013 4:30 PM
> >
> > Subject: Re: [Simmons Drums] Re: SDS 9 elementary problem & deeper fault
> >
> > Tell that to my 1950's Clavioline with original caps. ;)
> >
> > The cap debate will go on, but no, I only replace those in need of
> >
> > replacing.
> >
> > --
> >
> > electronically yours, jesper
> >
> > - -- --- ---- ----- ---- --- -- -
> >
> > www.electronic-obsession.se
> >
> > Nick Zampiello skrev 2013-05-20 20:37:
> >
> >  > the capacitors are most likely to decay over time.
> >
> >  >
> >
> >  > all of them suffer after 20-30 years in the field.
> >
> >  >
> >
> >  > usually the power supply is first thing you fix, after which a unit will
> >
> >  > actually start working, but it's not until you update all the caps that
> >
> >  > it starts to sound as good or better than factory.
> >
> >  >
> >
> >  > z
>