Vintage Simmons Drums (UK) Users Group

Hi list,

my SDS-7 is loosing the patches after a few hours without power. I guess 
it's time for another battery fix. :(

Anything special to think about before digging into it?

-- 
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

Answering myself...

YES - time indeed:
http://www.electronic-obsession.se/studio/simmons/sds7_battery.jpg

No obvious leakage. It is as if it's dried up instead of leaked. But 
16th of May 1985 is 26½ years ago. No wonder it forgot everything I told 
it...

-- 
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se


jesper skrev 2012-01-03 23:29:

> Hi list,
>
> my SDS-7 is loosing the patches after a few hours without power. I guess
> it's time for another battery fix. :(
>
> Anything special to think about before digging into it?
>
> --
> electronically yours, jesper
>
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se

Jesper,
you once told the list, that you like for example to use printer eproms as trashy sound sources. So why fix the battery? Understand the loss of memory as a higher level of art! Every day you will have other trashy noises!
Think positive.
No? Then solder a 3.6V NiCd (any brand, any shape, any size) into the sucker and go for it. While pulling out the 1.st card on the right (behind the inc/dec/button panel), pay attention at not loosing the centering pin of the connector. The rest is childsplay.
Best
Michael

  ----- Original Message ----- 
  From: jesper 
  To: Simmons_Drums@yahoogroups.com 
  Sent: Tuesday, January 03, 2012 11:29 PM
  Subject: [Simmons Drums] next battery exchange patient?


    
  Hi list,

  my SDS-7 is loosing the patches after a few hours without power. I guess 
  it's time for another battery fix. :(

  Anything special to think about before digging into it?

  -- 
  electronically yours, jesper

  - -- --- ---- ----- ---- --- -- -
  www.electronic-obsession.se


  

[Non-text portions of this message have been removed]

Hi Michael & list,

I'd be willing to go for the randomized patch way if it indeed would be 
randomized. :D Now it seems to get stuck in a very lame "all snare mode" 
  which is very undesirable.
Cards are already removed and so is the battery which fell apart upon 
desoldering. I took out the other card by it too and cleaned the back. 
It seems that Tony Holmes had stored it on it's rear for a period and 
there the leakage had ended up. Nothing major though. Now it looks shiny 
again and I'll get a new battery one of these days. Will go for the 
lithium AA-type again and mount the battery holder at the bottom (with 
added diode since backtracking the recharging circuit was a bit messy here).
Both plastic locaters are still safely in place and I left the stripped 
SDS-7 in the rack. Now, I bid you all a good night. :)

p.s. I keep the wacky eproms for the SDS-1's. d.s.

-- 
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se


Michael Buchner skrev 2012-01-04 02:46:

> Jesper,
> you once told the list, that you like for example to use printer eproms
> as trashy sound sources. So why fix the battery? Understand the loss of
> memory as a higher level of art! Every day you will have other trashy
> noises!
> Think positive.
> No? Then solder a 3.6V NiCd (any brand, any shape, any size) into the
> sucker and go for it. While pulling out the 1.st card on the right
> (behind the inc/dec/button panel), pay attention at not loosing the
> centering pin of the connector. The rest is childsplay.
> Best
> Michael
>
> ----- Original Message -----
> From: jesper
> To: Simmons_Drums@yahoogroups.com <mailto:Simmons_Drums%40yahoogroups.com>
> Sent: Tuesday, January 03, 2012 11:29 PM
> Subject: [Simmons Drums] next battery exchange patient?
>
> Hi list,
>
> my SDS-7 is loosing the patches after a few hours without power. I guess
> it's time for another battery fix. :(
>
> Anything special to think about before digging into it?
>
> --
> electronically yours, jesper
>
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se