I again want to reiterrate that removing grounds is not only unsafe, it is irresponsible and the potential is not for electric shock, but for death. People are minimizing what could happen here. As an Electrical/Electronics Engineer, I am telling you that lifting the ground and you become a better ground than the house ground and electricity will take the easiest path to ground and that becomes you. There are many ways posted to find the faulty equipment. Please do so and fix the problem, do not lift grounds. Remember, "Accidents" happen when you do not expect them to. Lifting a ground in my opinion and getting severely shocked or causing a death is not an "Accident" you were asking for it by lifing the ground. Also, the load in your home should be balanced on each phase. Having all of your high power equipment on one phase will overload the wiring, cause it to heat up (IxIxR) losses and cause the insulation to fail causing a major electrical fire. Imagine having one outlet or several outlets in series back to the panel on one phase. You now have a 10, 12 or 16 gauge wire w/neutral caring all that current. Is that wire rated for the maximum amount of your equipment? If not, no electrician worth their salt would allow this. Having your equipmen balanced on each phase is the proper way and having several independent outlets run to each phase with their own neutrals is the proper way. Example would be if you have mono amps for your speakers. One proper way is to have separate outlets for each amp run back to the panel and another outlet run to the panel for the lower powered equipment (pre-amp, turn table, tuner, cd player, etc., which should be combined via a conditioner, or multiple outlet device.
Enjoy and stay safe
Enjoy and stay safe