Grounding question?


Hi to all...

I hope I can get help with my problem... I bought a co-op here in NY which is in a old building. My video is horrible and I don't know what to do. There is an interference on both my televisions that is just driving me crazy...

The interference looks like lines running across the tv,at times it looks like the whites are bleeding....

I've bought pc audio outlets getting rid of the 15 cent outlets that came with the apartment. Still nothing, I've even went as far as bought a Richard Gray substation for the bedroom and a pole pig for the living room and still nothing.

I've upgraded all of the powercords and still nothing...

I've spoke with an electrician and he said that maybe the grounding wire being used is cheap or the wrong kind of wire.. What? Can that be the problem?

He also mentioned that it may be interference from another outlet that isn't connected properly such as a light switch...

Can anyone help? Thanks for any information..
soundsvision
Okay, so far after testing everything, it turns out it was a light switch in the bedroom, it wasn't grounded and was connected with cheap wiring, so the switch has been changed and it made a major improvement, however, there is still slight interference and that I can not pin point. The electrician who I used said that it may be that I live too close to the train station, meaning that the trains current may be affecting everyone's lines. I am not sure if that makes sense at all...

Any other suggestions?
I guess anything is possible. I never lived by one. Your neighbors should have the same problem on some of their TVs too, I would think.
As another New Yorker I am also interested in this question. I recently moved to a new apartment and have found the power to be very noisy compared to my last apartment a couple blocks away. My amp (almarro 205) gets hum, it gets radio (an oldies station as it so happens). It also picks up occasional racket that sounds to me like cell phone interference.

Before signing a lease, I checked the water pressure but no one told me to listen to the electricity! Live and learn.

This is all apparent when I crank the volume or listen on headphones. Less apparent at normal listening levels but faintly present when no music is playing.

I've tried turning off all the breakers except where I plug in the electronics (which is a circuit intended for a window AC unit). So no dimmers, no internet, nothing but dedicated power into the amp + source. Same noise.

I've also tried taking entire system off ground loop with cheater plug, same crap. Anyone think I should try the Pole Pig and other power conditioner treatments, or just accept this as another compromise of manhattan life?