Don't know too much about this stuff. A while back while hooking up my HD DVR (Fios) to by Visio LCD, it created a big spark, blew the fuse to my basement and apparently fried all of the HDMI ports on my TV. The cable box still works fine. The TV will work as a computer monitor still when hooked up with a traditional monitor cable from my laptop, but I want to know if I can hook up my PS3 or even the DVR using another method than HDMI.
I would recommend using an Voltage Outlet Tester Plug, available at you local Home Supply Store, to verify that all 120 VAC electrical outlets are correctly wired....perhaps there is a missing RETURN (White wire) or Safety Ground (Green wire):
Before reconnecting components, i would use a Volt-Ohm-Meter to see if there was any significant (more than 1 volt) difference between their metal chassis's (both AC and DC). If you measure significant voltage, something is not right.....