Vintage Simmons Drums (UK) Users Group

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

/k



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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 


 

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