OzBrit Audio
pfm Member
My Rega P3 developed a bad hum and I have traced this to a failed internal earth connection in the arm.
The 330 arm normally earths via the -ve left signal (the blue wire) but checking on the multimeter shows no connection between the metal arm and left earth. And if I earth the arm externally the hum goes away so this is definitely the problem. I have looked at the connections on the base of the arm by removing the grub screw and I can see a fifth black wire connected to blue (left hand signal earth) so the failure must be happening inside the arm.
Anyone on here done a rewire/know where that black wire should be connected?
The 330 arm normally earths via the -ve left signal (the blue wire) but checking on the multimeter shows no connection between the metal arm and left earth. And if I earth the arm externally the hum goes away so this is definitely the problem. I have looked at the connections on the base of the arm by removing the grub screw and I can see a fifth black wire connected to blue (left hand signal earth) so the failure must be happening inside the arm.
Anyone on here done a rewire/know where that black wire should be connected?