Spencerleehorton
Well-known member
Hi all,
I dont seem to be able to get rid of this 100hz hum when 48v is on?
I have made sure I have an audio gnd and chassis gnd, the 48v gnd is only attached to chassis gnd and I have a 10R 2 watt resistor from the audio gnd to chassis gnd.
Im going to test only 2 channels and see if its the psu, I have volkers psu pcbs here and will change, failing that I've run out of ideas??
I dont seem to be able to get rid of this 100hz hum when 48v is on?
I have made sure I have an audio gnd and chassis gnd, the 48v gnd is only attached to chassis gnd and I have a 10R 2 watt resistor from the audio gnd to chassis gnd.
Im going to test only 2 channels and see if its the psu, I have volkers psu pcbs here and will change, failing that I've run out of ideas??