Don’t cut the grounding 3rd pin off the male plug; it voids a warranty if it’s still in effect. Same for any DIY ’surgery’ to defeat it...
Besides, it’s likely there for a good reason. Like keeping your hide intact.
Instead, try a simple test 1st.
Insert a 3>2 ’cheater plug’ that comes with the separate ground wire.
(These are also colloquially referred to as a ’dead man plug’.....Gee, I wonder why.....}.
Turn your unit back on. Listen for annoying noise.
If it’s gone, wonderful.
If not, problem is elsewhere.
Bonus points and curiosity cure: Ground wire to the central screw that holds the cover plate of the wall box. Hum returns, Bingo. Hum still exists....Well, fook....*L*
I had a similar hum issue a while back.....had nothing to due with the AC lines....faulty interconnect RCA cable....took a while to find That...
Besides, it’s likely there for a good reason. Like keeping your hide intact.
Instead, try a simple test 1st.
Insert a 3>2 ’cheater plug’ that comes with the separate ground wire.
(These are also colloquially referred to as a ’dead man plug’.....Gee, I wonder why.....}.
Turn your unit back on. Listen for annoying noise.
If it’s gone, wonderful.
If not, problem is elsewhere.
Bonus points and curiosity cure: Ground wire to the central screw that holds the cover plate of the wall box. Hum returns, Bingo. Hum still exists....Well, fook....*L*
I had a similar hum issue a while back.....had nothing to due with the AC lines....faulty interconnect RCA cable....took a while to find That...