I have a '59 Fisher X-100 that has been rebuilt and is working fine and sounds excellent. However, it seems to be having what I believe is a grounding issue. When powered up, not only can I feel a slight electrical charge tingling on its metal surfaces, but I can also feel it on my turntable's arm tube and other metal surfaces as well. This was not an issue when I was using a Rega Brio-R (which has a grounded power cable). I suspect that the wiring in my old house has something to do with it too, because I have occasionally experienced this with a '70s Yamaha receiver elsewhere in my house. Some more details: • The Fisher, along with the rest of the components, is plugged into a Monster HTS5100 Power Center. (The Monster’s switched outlets are handy for preserving the Fisher’s power/volume knob.) • The Fisher has not been upgraded to a 3-prong cable. • When I was still using a powered subwoofer (also hooked up to the Monster), connected to the Fisher’s center channel jack, there was no tingling; the sub with its 3-prong power cable was apparently grounding the Fisher. • The room originally had an old-style 2-prong wall outlet, which I replaced with a 3-prong outlet with a ground wire connected internally to the metal casing inside. The ground light on the Monster is on, indicating that the outlet is in fact grounded. Any idea how to fix this? Would running a wire from the ground terminal on the back of the Monster to a chassis screw on the Fisher be a good place to start?