I purchased it september last year. After one month, the power cord got pulled out slightly off the psu and i could a few sparks as well coming from the psu(the spot where the cable goes in). I phoned to get them to replace it, and the new one they brought had the same problem the moment the power cord gets plugged into the psu. Then I got a 3rd one in october which just died last week. Could this indicate a problem with my power outlet?