please help, have recentley had newly plastered walls, socket faces removed by electrician prior to get a good finish, halfway through plastering half the sockets in house are not working, not a fuse problem electrican has tested most of existing and new sockets put in but can not find the fault and the root cause problem, any ideas on what might be responsible, he has got a flicker of power from the sockets not working but that is all, and he cant find the answer, it is a 1960's house which has not been rewired. many thanks, kim