Hi there. I'm wondering if anyone here has experience repairing Mackie
boards. My CFX20MKII has a 60hz hum in all output channels. I haven't
been inside the unit yet, but am qualified to repair the power supply.
I have done the basic tests for ground loops or noisy inputs. with
all inputs off, the LF hum is in main, aux , sub, etc. I am assuming the
PS capacitors need replacing, or there is a broken ground.
Anyone have a schematic?
Thanks.
boards. My CFX20MKII has a 60hz hum in all output channels. I haven't
been inside the unit yet, but am qualified to repair the power supply.
I have done the basic tests for ground loops or noisy inputs. with
all inputs off, the LF hum is in main, aux , sub, etc. I am assuming the
PS capacitors need replacing, or there is a broken ground.
Anyone have a schematic?
Thanks.