Vintage Simmons Drums (UK) Users Group

Just picked up a faulty SDS2000 (want to revisit my soldering / 
faultfinding skills and fill up some empty evenings) just wondering if 
anyone has or can point me in the direction of service guides or 
schematics? Apparently it all buzzes and the lights work but no sound 
out...keeping my mind open until I can do some experimentation myself, 
being a computer service engineer Ive learnt not to take other peoples 
explanation of the symptoms too seriously

Ok so thought id give you all an update, couldnt find schematics 
anywhere, but downloaded the user manual from simmons museum (thanks 
wolfgang!)  unwrapped it, powered it up, wired in some computer 
speakers to the headphone socket...as described lights on no sound, 
did a factory reset as per the manual still no sound, took the top 
off and s**t myself was expecting it to be all transistors and bits 
due to the age (TTL was what i thought it would be) instead im faced 
with a veritable chip shop, at least 5 of which have the simmons 
logo on them and not a lot else...however even a blind monkey could 
have found this one one of the 2 big 23v capacitors had a blown can 
bottom, changed it out and bingo everything works. so SDS2000 
no000397 is resurected, polished and has been added to the 
setup...total cost �50 inc delivery, capacitor free from a box of 
bits and RS �1.95 for some slider knobs.

now questions for all you list gods/demigods/demons or plebs like 
me...does anyone have any idea what sort of card goes in the 
soundcard slot? does anyone, know anyone, who has a friend, who may 
know where to get and how to program the said card, to gain access 
to the other available sounds for this beasty?

no thought not;-)

p_k_daniels skrev:
> 
> 
> Ok so thought id give you all an update, couldnt find schematics
> anywhere, but downloaded the user manual from simmons museum (thanks
> wolfgang!) unwrapped it, powered it up, wired in some computer
> speakers to the headphone socket...as described lights on no sound,
> did a factory reset as per the manual still no sound, took the top
> off and s**t myself was expecting it to be all transistors and bits
> due to the age (TTL was what i thought it would be) instead im faced
> with a veritable chip shop, at least 5 of which have the simmons
> logo on them and not a lot else...however even a blind monkey could
> have found this one one of the 2 big 23v capacitors had a blown can
> bottom, changed it out and bingo everything works. so SDS2000
> no000397 is resurected, polished and has been added to the
> setup...total cost £50 inc delivery, capacitor free from a box of
> bits and RS £1.95 for some slider knobs.

Congratulations!

But... the SDS-2000 is a late machine on the Simmons timeline and you 
need to go into the early 70's to loose most IC's in synthesisers...

-- 
electronically yours, jesper
- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se
www.myspace.com/machinepop
- -- --- ---- ----- ---- --- -- -

Hi & Bravo for the resurrection...

I love very much the SDS2000.
nothing to see with the other Simmons probably the most cold one in  
term of sound ...But there's something very nice in it !!!


I have 5 sound cards & they're not all working ...
the ones that are working don't bring anything interesting , just the  
same sounds all the time...
I had them probably from a maintenance service...
I don't know much more about them ...

The fact is  that I would like to find some other sounds &eventually  
reprogram & reuse the ones that are faulty ...
But I have no Idea yet how to do that ...
Maybe one day ...

I doubt it helps but anyway it's always good to talk abou this (quite  
forgotten)  unit...

good luck,
Patrice.


Le 10 juin 08 à 17:11, p_k_daniels a écrit :

> Ok so thought id give you all an update, couldnt find schematics
> anywhere, but downloaded the user manual from simmons museum (thanks
> wolfgang!) unwrapped it, powered it up, wired in some computer
> speakers to the headphone socket...as described lights on no sound,
> did a factory reset as per the manual still no sound, took the top
> off and s**t myself was expecting it to be all transistors and bits
> due to the age (TTL was what i thought it would be) instead im faced
> with a veritable chip shop, at least 5 of which have the simmons
> logo on them and not a lot else...however even a blind monkey could
> have found this one one of the 2 big 23v capacitors had a blown can
> bottom, changed it out and bingo everything works. so SDS2000
> no000397 is resurected, polished and has been added to the
> setup...total cost £50 inc delivery, capacitor free from a box of
> bits and RS £1.95 for some slider knobs.
>
> now questions for all you list gods/demigods/demons or plebs like
> me...does anyone have any idea what sort of card goes in the
> soundcard slot? does anyone, know anyone, who has a friend, who may
> know where to get and how to program the said card, to gain access
> to the other available sounds for this beasty?
>
> no thought not;-)
>
>
> 



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