Vintage Simmons Drums (UK) Users Group

you can send me a pic of it  so I could look if I have one ?
Tell me via private mail.
good luck,
Patrice.



----- Mail d'origine -----
De: KW 
À: Simmons Drums 
Envoyé: Sat, 17 Sep 2011 07:26:24 +0200 (CEST)
Objet: SV: [Simmons Drums] SDS7 repairs
















 



  


    
      
      
      i'm really sorry to hear this, hope help comes soon buddy!



/k



________________________________

Från: WT <waveterm@...>

Till: Simmons_Drums@yahoogroups.com

Skickat: fredag, 16 september 2011 22:52

Ämne: [Simmons Drums] SDS7 repairs



  

So,



my SDS7 died a few weeks ago.



It has 12 modules and runs very hot. The rectifier for the +5V made a noise 

and the display flickered in and out.



I´ve removed all modules and the CPU starts and run with no problem. 

Reseating modules one at a time works fine but the more modules that are 

connected, the more there is noise on the +5V rail ( no kidd....lol ). The 

VCO´s sound garbled and the audio output has hum.



I have replaced the capacitor on the +5V rail but there is still around 1V 

AC half wave noise on it. Both before the regulator and after the regulator. 

This leads me to believe that I need to replace the rectifier bridge with 

one that can output more current.



Does anyone have any suggestion for a suitable one ?



WT 



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




    
     

    
    






  









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