I have hum/noise from one channel of my Rega RB250. I have it both with and without cartridge. I can't see any fault via a simple ohm meter. Anybody have experienced this? Will I just have to take it apart, and rewire?
Yes. I test without cartridge and directly to mixer and into headphones. The preamp have no noise itself. Basically I just plug in the wires.
Already did that, and no issues. When the 4 wires just han in the air the right channel is silent and the left channel have noise. It's the same with cartridge connected and RIAA connected.
Did you swap the left and right turntable RCA plugs at the preamp inputs,
and verify that the noise changes channels?
Do the plugs fit tightly on the sockets?
REGA (and other cartridge/arm manufacturers) use prehistoric wiring methods.
This may help...
Good Luck!
I will remove the wires and test the phono cables without wires first. I have a micro seiko dqx500 and would like to solder wires directly to the phono outputs, instead of using the attached phono cable.