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Oberheim Matrix-1000 - Power supply modification to eliminate any kind of audible transformer hum.
 
Oberheim Matrix-1000 - PSU Modification * The old transformer - producing a lot of audible hum
Oberheim Matrix-1000 - PSU Modification * Fitting of the new toroidal transformers
Oberheim Matrix-1000 - PSU Modification * Cabling of the new transformer board
Oberheim Matrix-1000 - PSU Modification * Drilling the mounting holes
Oberheim Matrix-1000 - PSU Modification * Mounting of the new transformer board
Oberheim Matrix-1000 - PSU Modification * The new transformer board fitted - any hum completely gone!
  PSU Modification  
  PSU Modification  
  PSU Modification  
  PSU Modification  
  PSU Modification  
  PSU Modification  

 
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